Merge branch 'develop' of github.com:EllisLab/CodeIgniter into develop

Conflicts:
	system/core/Security.php
diff --git a/.travis.yml b/.travis.yml
index 84029b9..97ea042 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,14 +8,17 @@
   - DB=mysql
   - DB=pgsql
   - DB=sqlite
+  - DB=pdo/mysql
+  - DB=pdo/pgsql
+  - DB=pdo/sqlite
 
 before_script:
   - pyrus channel-discover pear.php-tools.net
   - pyrus install http://pear.php-tools.net/get/vfsStream-0.11.2.tgz
   - phpenv rehash
-  - sh -c "if [ '$DB' = 'pgsql' ]; then psql -c 'DROP DATABASE IF EXISTS ci_test;' -U postgres; fi"
-  - sh -c "if [ '$DB' = 'pgsql' ]; then psql -c 'create database ci_test;' -U postgres; fi"
-  - sh -c "if [ '$DB' = 'mysql' ]; then mysql -e 'create database IF NOT EXISTS ci_test;'; fi"
+  - sh -c "if [ '$DB' = 'pgsql' ] || [ '$DB' = 'pdo/pgsql' ]; then psql -c 'DROP DATABASE IF EXISTS ci_test;' -U postgres; fi"
+  - sh -c "if [ '$DB' = 'pgsql' ] || [ '$DB' = 'pdo/pgsql' ]; then psql -c 'create database ci_test;' -U postgres; fi"
+  - sh -c "if [ '$DB' = 'mysql' ] || [ '$DB' = 'pdo/mysql' ]; then mysql -e 'create database IF NOT EXISTS ci_test;'; fi"
 
 script: phpunit --configuration tests/travis/$DB.phpunit.xml
 
diff --git a/application/config/database.php b/application/config/database.php
index f08d887..1949873 100644
--- a/application/config/database.php
+++ b/application/config/database.php
@@ -46,7 +46,7 @@
 |				 cubrid, interbase, mssql, mysql, mysqli, oci8, 
 |				 odbc, pdo, postgre, sqlite, sqlite3, sqlsrv
 |	['dbprefix'] You can add an optional prefix, which will be added
-|				 to the table name when using the  Active Record class
+|				 to the table name when using the  Query Builder class
 |	['pconnect'] TRUE/FALSE - Whether to use a persistent connection
 |	['db_debug'] TRUE/FALSE - Whether database errors should be displayed.
 |	['cache_on'] TRUE/FALSE - Enables/disables query caching
@@ -69,12 +69,12 @@
 | The $active_group variable lets you choose which connection group to
 | make active.  By default there is only one group (the 'default' group).
 |
-| The $active_record variables lets you determine whether or not to load
-| the active record class
+| The $query_builder variables lets you determine whether or not to load
+| the query builder class
 */
 
 $active_group = 'default';
-$active_record = TRUE;
+$query_builder = TRUE;
 
 $db['default'] = array(
 	'dsn'	=> '',
diff --git a/application/config/foreign_chars.php b/application/config/foreign_chars.php
index e2d3f23..41de123 100644
--- a/application/config/foreign_chars.php
+++ b/application/config/foreign_chars.php
@@ -40,50 +40,55 @@
 	'/Ä/' => 'Ae',
 	'/Ü/' => 'Ue',
 	'/Ö/' => 'Oe',
-	'/À|Á|Â|Ã|Ä|Å|Ǻ|Ā|Ă|Ą|Ǎ/' => 'A',
-	'/à|á|â|ã|å|ǻ|ā|ă|ą|ǎ|ª/' => 'a',
+	'/À|Á|Â|Ã|Ä|Å|Ǻ|Ā|Ă|Ą|Ǎ|Α|Ά/' => 'A',
+	'/à|á|â|ã|å|ǻ|ā|ă|ą|ǎ|ª|α|ά/' => 'a',
 	'/Ç|Ć|Ĉ|Ċ|Č/' => 'C',
 	'/ç|ć|ĉ|ċ|č/' => 'c',
-	'/Ð|Ď|Đ/' => 'Dj',
-	'/ð|ď|đ/' => 'dj',
-	'/È|É|Ê|Ë|Ē|Ĕ|Ė|Ę|Ě/' => 'E',
-	'/è|é|ê|ë|ē|ĕ|ė|ę|ě/' => 'e',
-	'/Ĝ|Ğ|Ġ|Ģ/' => 'G',
-	'/ĝ|ğ|ġ|ģ/' => 'g',
+	'/Ð|Ď|Đ|Δ/' => 'Dj',
+	'/ð|ď|đ|δ/' => 'dj',
+	'/È|É|Ê|Ë|Ē|Ĕ|Ė|Ę|Ě|Ε|Έ/' => 'E',
+	'/è|é|ê|ë|ē|ĕ|ė|ę|ě|έ|ε/' => 'e',
+	'/Ĝ|Ğ|Ġ|Ģ|Γ/' => 'G',
+	'/ĝ|ğ|ġ|ģ|γ/' => 'g',
 	'/Ĥ|Ħ/' => 'H',
 	'/ĥ|ħ/' => 'h',
-	'/Ì|Í|Î|Ï|Ĩ|Ī|Ĭ|Ǐ|Į|İ/' => 'I',
-	'/ì|í|î|ï|ĩ|ī|ĭ|ǐ|į|ı/' => 'i',
+	'/Ì|Í|Î|Ï|Ĩ|Ī|Ĭ|Ǐ|Į|İ|Η|Ή|Ί|Ι|Ϊ/' => 'I',
+	'/ì|í|î|ï|ĩ|ī|ĭ|ǐ|į|ı|η|ή|ί|ι|ϊ/' => 'i',
 	'/Ĵ/' => 'J',
 	'/ĵ/' => 'j',
-	'/Ķ/' => 'K',
-	'/ķ/' => 'k',
-	'/Ĺ|Ļ|Ľ|Ŀ|Ł/' => 'L',
-	'/ĺ|ļ|ľ|ŀ|ł/' => 'l',
-	'/Ñ|Ń|Ņ|Ň/' => 'N',
-	'/ñ|ń|ņ|ň|ʼn/' => 'n',
-	'/Ò|Ó|Ô|Õ|Ō|Ŏ|Ǒ|Ő|Ơ|Ø|Ǿ/' => 'O',
-	'/ò|ó|ô|õ|ō|ŏ|ǒ|ő|ơ|ø|ǿ|º/' => 'o',
-	'/Ŕ|Ŗ|Ř/' => 'R',
-	'/ŕ|ŗ|ř/' => 'r',
-	'/Ś|Ŝ|Ş|Š/' => 'S',
-	'/ś|ŝ|ş|š|ſ/' => 's',
-	'/Ţ|Ť|Ŧ/' => 'T',
-	'/ţ|ť|ŧ/' => 't',
+	'/Ķ|Κ/' => 'K',
+	'/ķ|κ/' => 'k',
+	'/Ĺ|Ļ|Ľ|Ŀ|Ł|Λ/' => 'L',
+	'/ĺ|ļ|ľ|ŀ|ł|λ/' => 'l',
+	'/Ñ|Ń|Ņ|Ň|Ν/' => 'N',
+	'/ñ|ń|ņ|ň|ʼn|ν/' => 'n',
+	'/Ò|Ó|Ô|Õ|Ō|Ŏ|Ǒ|Ő|Ơ|Ø|Ǿ|Ο|Ό|Ω|Ώ/' => 'O',
+	'/ò|ó|ô|õ|ō|ŏ|ǒ|ő|ơ|ø|ǿ|º|ο|ό|ω|ώ/' => 'o',
+	'/Ŕ|Ŗ|Ř|Ρ/' => 'R',
+	'/ŕ|ŗ|ř|ρ/' => 'r',
+	'/Ś|Ŝ|Ş|Ș|Š|Σ/' => 'S',
+	'/ś|ŝ|ş|ș|š|ſ|σ|ς/' => 's',
+	'/Ț|Ţ|Ť|Ŧ|τ/' => 'T',
+	'/ț|ţ|ť|ŧ/' => 't',
 	'/Ù|Ú|Û|Ũ|Ū|Ŭ|Ů|Ű|Ų|Ư|Ǔ|Ǖ|Ǘ|Ǚ|Ǜ/' => 'U',
-	'/ù|ú|û|ũ|ū|ŭ|ů|ű|ų|ư|ǔ|ǖ|ǘ|ǚ|ǜ/' => 'u',
-	'/Ý|Ÿ|Ŷ/' => 'Y',
+	'/ù|ú|û|ũ|ū|ŭ|ů|ű|ų|ư|ǔ|ǖ|ǘ|ǚ|ǜ|υ|ύ|ϋ/' => 'u',
+	'/Ý|Ÿ|Ŷ|Υ|Ύ|Ϋ/' => 'Y',
 	'/ý|ÿ|ŷ/' => 'y',
 	'/Ŵ/' => 'W',
 	'/ŵ/' => 'w',
-	'/Ź|Ż|Ž/' => 'Z',
-	'/ź|ż|ž/' => 'z',
+	'/Ź|Ż|Ž|Ζ/' => 'Z',
+	'/ź|ż|ž|ζ/' => 'z',
 	'/Æ|Ǽ/' => 'AE',
 	'/ß/'=> 'ss',
 	'/IJ/' => 'IJ',
 	'/ij/' => 'ij',
 	'/Œ/' => 'OE',
-	'/ƒ/' => 'f'
+	'/ƒ/' => 'f',
+	'/ξ/' => 'ks',
+	'/π/' => 'p',
+	'/β/' => 'v',
+	'/μ/' => 'm',
+	'/ψ/' => 'ps',
 );
 
 /* End of file foreign_chars.php */
diff --git a/application/errors/error_404.php b/application/errors/error_404.php
index 7460329..c19bedf 100644
--- a/application/errors/error_404.php
+++ b/application/errors/error_404.php
@@ -72,7 +72,7 @@
 #container {
 	margin: 10px;
 	border: 1px solid #D0D0D0;
-	-webkit-box-shadow: 0 0 8px #D0D0D0;
+	box-shadow: 0 0 8px #D0D0D0;
 }
 
 p {
diff --git a/application/errors/error_db.php b/application/errors/error_db.php
index eb3a752..3b244e0 100644
--- a/application/errors/error_db.php
+++ b/application/errors/error_db.php
@@ -72,7 +72,7 @@
 #container {
 	margin: 10px;
 	border: 1px solid #D0D0D0;
-	-webkit-box-shadow: 0 0 8px #D0D0D0;
+	box-shadow: 0 0 8px #D0D0D0;
 }
 
 p {
diff --git a/application/errors/error_general.php b/application/errors/error_general.php
index 59896e1..c88afe1 100644
--- a/application/errors/error_general.php
+++ b/application/errors/error_general.php
@@ -72,7 +72,7 @@
 #container {
 	margin: 10px;
 	border: 1px solid #D0D0D0;
-	-webkit-box-shadow: 0 0 8px #D0D0D0;
+	box-shadow: 0 0 8px #D0D0D0;
 }
 
 p {
diff --git a/phpdoc.dist.xml b/phpdoc.dist.xml
new file mode 100644
index 0000000..6dc58c2
--- /dev/null
+++ b/phpdoc.dist.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<phpdoc>
+	<title>CodeIgniter v3.0.0 API</title>
+    <parser>
+        <target>./api/</target>
+    </parser>
+    <transformer>
+        <target>./api/</target>
+    </transformer>
+    <files>
+        <directory>./system</directory>
+    </files>
+
+    <logging>
+        <level>warn</level>
+        <paths>
+            <default>./api/log/{DATE}.log</default>
+            <errors>./api/{DATE}.errors.log</errors>
+        </paths>
+    </logging>
+</phpdoc>
\ No newline at end of file
diff --git a/system/core/Benchmark.php b/system/core/Benchmark.php
index 39027e8..c17e95a 100755
--- a/system/core/Benchmark.php
+++ b/system/core/Benchmark.php
@@ -46,7 +46,7 @@
 	 *
 	 * @var array
 	 */
-	public $marker = array();
+	public $marker =	array();
 
 	// --------------------------------------------------------------------
 
@@ -119,4 +119,4 @@
 }
 
 /* End of file Benchmark.php */
-/* Location: ./system/core/Benchmark.php */
\ No newline at end of file
+/* Location: ./system/core/Benchmark.php */
diff --git a/system/core/CodeIgniter.php b/system/core/CodeIgniter.php
index 92187fa..349f9f2 100755
--- a/system/core/CodeIgniter.php
+++ b/system/core/CodeIgniter.php
@@ -25,8 +25,6 @@
  * @filesource
  */
 
-// ------------------------------------------------------------------------
-
 /**
  * System Initialization File
  *
@@ -42,7 +40,7 @@
 /**
  * CodeIgniter Version
  *
- * @var string
+ * @var	string
  *
  */
 	define('CI_VERSION', '3.0-dev');
@@ -155,7 +153,7 @@
  *
  * Note: Order here is rather important as the UTF-8
  * class needs to be used very early on, but it cannot
- * properly determine if UTf-8 can be supported until
+ * properly determine if UTF-8 can be supported until
  * after the Config class is instantiated.
  *
  */
@@ -230,6 +228,13 @@
 	// Load the base controller class
 	require BASEPATH.'core/Controller.php';
 
+	/**
+	 * Reference to the CI_Controller method.
+	 *
+	 * Returns current CI instance object
+	 *
+	 * @return object
+	 */
 	function &get_instance()
 	{
 		return CI_Controller::get_instance();
diff --git a/system/core/Common.php b/system/core/Common.php
index aeb784b..78aa6e8 100644
--- a/system/core/Common.php
+++ b/system/core/Common.php
@@ -39,17 +39,17 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Determines if the current version of PHP is greater then the supplied value
- *
- * Since there are a few places where we conditionally test for PHP > 5
- * we'll set a static variable.
- *
- * @param	string
- * @return	bool	TRUE if the current version is $version or higher
- */
 if ( ! function_exists('is_php'))
 {
+	/**
+	 * Determines if the current version of PHP is greater then the supplied value
+	 *
+	 * Since there are a few places where we conditionally test for PHP > 5
+	 * we'll set a static variable.
+	 *
+	 * @param	string
+	 * @return	bool	TRUE if the current version is $version or higher
+	 */
 	function is_php($version = '5.0.0')
 	{
 		static $_is_php;
@@ -66,18 +66,18 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Tests for file writability
- *
- * is_writable() returns TRUE on Windows servers when you really can't write to
- * the file, based on the read-only attribute. is_writable() is also unreliable
- * on Unix servers if safe_mode is on.
- *
- * @param	string
- * @return	void
- */
 if ( ! function_exists('is_really_writable'))
 {
+	/**
+	 * Tests for file writability
+	 *
+	 * is_writable() returns TRUE on Windows servers when you really can't write to
+	 * the file, based on the read-only attribute. is_writable() is also unreliable
+	 * on Unix servers if safe_mode is on.
+	 *
+	 * @param	string
+	 * @return	void
+	 */
 	function is_really_writable($file)
 	{
 		// If we're on a Unix server with safe_mode off we call is_writable
@@ -114,20 +114,20 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Class registry
- *
- * This function acts as a singleton. If the requested class does not
- * exist it is instantiated and set to a static variable. If it has
- * previously been instantiated the variable is returned.
- *
- * @param	string	the class name being requested
- * @param	string	the directory where the class should be found
- * @param	string	the class name prefix
- * @return	object
- */
 if ( ! function_exists('load_class'))
 {
+	/**
+	 * Class registry
+	 *
+	 * This function acts as a singleton. If the requested class does not
+	 * exist it is instantiated and set to a static variable. If it has
+	 * previously been instantiated the variable is returned.
+	 *
+	 * @param	string	the class name being requested
+	 * @param	string	the directory where the class should be found
+	 * @param	string	the class name prefix
+	 * @return	object
+	 */
 	function &load_class($class, $directory = 'libraries', $prefix = 'CI_')
 	{
 		static $_classes = array();
@@ -187,15 +187,15 @@
 
 // --------------------------------------------------------------------
 
-/**
- * Keeps track of which libraries have been loaded. This function is
- * called by the load_class() function above
- *
- * @param	string
- * @return	array
- */
 if ( ! function_exists('is_loaded'))
 {
+	/**
+	 * Keeps track of which libraries have been loaded. This function is
+	 * called by the load_class() function above
+	 *
+	 * @param	string
+	 * @return	array
+	 */
 	function &is_loaded($class = '')
 	{
 		static $_is_loaded = array();
@@ -211,17 +211,17 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Loads the main config.php file
- *
- * This function lets us grab the config file even if the Config class
- * hasn't been instantiated yet
- *
- * @param	array
- * @return	array
- */
 if ( ! function_exists('get_config'))
 {
+	/**
+	 * Loads the main config.php file
+	 *
+	 * This function lets us grab the config file even if the Config class
+	 * hasn't been instantiated yet
+	 *
+	 * @param	array
+	 * @return	array
+	 */
 	function &get_config($replace = array())
 	{
 		static $_config;
@@ -271,14 +271,14 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Returns the specified config item
- *
- * @param	string
- * @return	mixed
- */
 if ( ! function_exists('config_item'))
 {
+	/**
+	 * Returns the specified config item
+	 *
+	 * @param	string
+	 * @return	mixed
+	 */
 	function config_item($item)
 	{
 		static $_config_item = array();
@@ -300,22 +300,22 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Error Handler
- *
- * This function lets us invoke the exception class and
- * display errors using the standard error template located
- * in application/errors/errors.php
- * This function will send the error page directly to the
- * browser and exit.
- *
- * @param	string
- * @param	int
- * @param	string
- * @return	void
- */
 if ( ! function_exists('show_error'))
 {
+	/**
+	 * Error Handler
+	 *
+	 * This function lets us invoke the exception class and
+	 * display errors using the standard error template located
+	 * in application/errors/errors.php
+	 * This function will send the error page directly to the
+	 * browser and exit.
+	 *
+	 * @param	string
+	 * @param	int
+	 * @param	string
+	 * @return	void
+	 */
 	function show_error($message, $status_code = 500, $heading = 'An Error Was Encountered')
 	{
 		$_error =& load_class('Exceptions', 'core');
@@ -326,19 +326,19 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * 404 Page Handler
- *
- * This function is similar to the show_error() function above
- * However, instead of the standard error template it displays
- * 404 errors.
- *
- * @param	string
- * @param	bool
- * @return	void
- */
 if ( ! function_exists('show_404'))
 {
+	/**
+	 * 404 Page Handler
+	 *
+	 * This function is similar to the show_error() function above
+	 * However, instead of the standard error template it displays
+	 * 404 errors.
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	void
+	 */
 	function show_404($page = '', $log_error = TRUE)
 	{
 		$_error =& load_class('Exceptions', 'core');
@@ -349,19 +349,19 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Error Logging Interface
- *
- * We use this as a simple mechanism to access the logging
- * class and send messages to be logged.
- *
- * @param	string
- * @param	string
- * @param	bool
- * @return	void
- */
 if ( ! function_exists('log_message'))
 {
+	/**
+	 * Error Logging Interface
+	 *
+	 * We use this as a simple mechanism to access the logging
+	 * class and send messages to be logged.
+	 *
+	 * @param	string
+	 * @param	string
+	 * @param	bool
+	 * @return	void
+	 */
 	function log_message($level = 'error', $message, $php_error = FALSE)
 	{
 		static $_log;
@@ -378,59 +378,59 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Set HTTP Status Header
- *
- * @param	int	the status code
- * @param	string
- * @return	void
- */
 if ( ! function_exists('set_status_header'))
 {
+	/**
+	 * Set HTTP Status Header
+	 *
+	 * @param	int	the status code
+	 * @param	string
+	 * @return	void
+	 */
 	function set_status_header($code = 200, $text = '')
 	{
 		$stati = array(
-					200	=> 'OK',
-					201	=> 'Created',
-					202	=> 'Accepted',
-					203	=> 'Non-Authoritative Information',
-					204	=> 'No Content',
-					205	=> 'Reset Content',
-					206	=> 'Partial Content',
+			200	=> 'OK',
+			201	=> 'Created',
+			202	=> 'Accepted',
+			203	=> 'Non-Authoritative Information',
+			204	=> 'No Content',
+			205	=> 'Reset Content',
+			206	=> 'Partial Content',
 
-					300	=> 'Multiple Choices',
-					301	=> 'Moved Permanently',
-					302	=> 'Found',
-					304	=> 'Not Modified',
-					305	=> 'Use Proxy',
-					307	=> 'Temporary Redirect',
+			300	=> 'Multiple Choices',
+			301	=> 'Moved Permanently',
+			302	=> 'Found',
+			304	=> 'Not Modified',
+			305	=> 'Use Proxy',
+			307	=> 'Temporary Redirect',
 
-					400	=> 'Bad Request',
-					401	=> 'Unauthorized',
-					403	=> 'Forbidden',
-					404	=> 'Not Found',
-					405	=> 'Method Not Allowed',
-					406	=> 'Not Acceptable',
-					407	=> 'Proxy Authentication Required',
-					408	=> 'Request Timeout',
-					409	=> 'Conflict',
-					410	=> 'Gone',
-					411	=> 'Length Required',
-					412	=> 'Precondition Failed',
-					413	=> 'Request Entity Too Large',
-					414	=> 'Request-URI Too Long',
-					415	=> 'Unsupported Media Type',
-					416	=> 'Requested Range Not Satisfiable',
-					417	=> 'Expectation Failed',
-					422	=> 'Unprocessable Entity',
+			400	=> 'Bad Request',
+			401	=> 'Unauthorized',
+			403	=> 'Forbidden',
+			404	=> 'Not Found',
+			405	=> 'Method Not Allowed',
+			406	=> 'Not Acceptable',
+			407	=> 'Proxy Authentication Required',
+			408	=> 'Request Timeout',
+			409	=> 'Conflict',
+			410	=> 'Gone',
+			411	=> 'Length Required',
+			412	=> 'Precondition Failed',
+			413	=> 'Request Entity Too Large',
+			414	=> 'Request-URI Too Long',
+			415	=> 'Unsupported Media Type',
+			416	=> 'Requested Range Not Satisfiable',
+			417	=> 'Expectation Failed',
+			422	=> 'Unprocessable Entity',
 
-					500	=> 'Internal Server Error',
-					501	=> 'Not Implemented',
-					502	=> 'Bad Gateway',
-					503	=> 'Service Unavailable',
-					504	=> 'Gateway Timeout',
-					505	=> 'HTTP Version Not Supported'
-			);
+			500	=> 'Internal Server Error',
+			501	=> 'Not Implemented',
+			502	=> 'Bad Gateway',
+			503	=> 'Service Unavailable',
+			504	=> 'Gateway Timeout',
+			505	=> 'HTTP Version Not Supported'
+		);
 
 		if ($code == '' OR ! is_numeric($code))
 		{
@@ -466,25 +466,25 @@
 
 // --------------------------------------------------------------------
 
-/**
- * Exception Handler
- *
- * This is the custom exception handler that is declaired at the top
- * of Codeigniter.php. The main reason we use this is to permit
- * PHP errors to be logged in our own log files since the user may
- * not have access to server logs. Since this function
- * effectively intercepts PHP errors, however, we also need
- * to display errors based on the current error_reporting level.
- * We do that with the use of a PHP error template.
- *
- * @param	int
- * @param	string
- * @param	string
- * @param	int
- * @return	void
- */
 if ( ! function_exists('_exception_handler'))
 {
+	/**
+	 * Exception Handler
+	 *
+	 * This is the custom exception handler that is declaired at the top
+	 * of Codeigniter.php. The main reason we use this is to permit
+	 * PHP errors to be logged in our own log files since the user may
+	 * not have access to server logs. Since this function
+	 * effectively intercepts PHP errors, however, we also need
+	 * to display errors based on the current error_reporting level.
+	 * We do that with the use of a PHP error template.
+	 *
+	 * @param	int
+	 * @param	string
+	 * @param	string
+	 * @param	int
+	 * @return	void
+	 */
 	function _exception_handler($severity, $message, $filepath, $line)
 	{
 		 // We don't bother with "strict" notices since they tend to fill up
@@ -518,18 +518,18 @@
 
 // --------------------------------------------------------------------
 
-/**
- * Remove Invisible Characters
- *
- * This prevents sandwiching null characters
- * between ascii characters, like Java\0script.
- *
- * @param	string
- * @param	bool
- * @return	string
- */
 if ( ! function_exists('remove_invisible_characters'))
 {
+	/**
+	 * Remove Invisible Characters
+	 *
+	 * This prevents sandwiching null characters
+	 * between ascii characters, like Java\0script.
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
 	function remove_invisible_characters($str, $url_encoded = TRUE)
 	{
 		$non_displayables = array();
@@ -556,14 +556,14 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Returns HTML escaped variable
- *
- * @param	mixed
- * @return	mixed
- */
 if ( ! function_exists('html_escape'))
 {
+	/**
+	 * Returns HTML escaped variable
+	 *
+	 * @param	mixed
+	 * @return	mixed
+	 */
 	function html_escape($var)
 	{
 		return is_array($var)
diff --git a/system/core/Config.php b/system/core/Config.php
index 91826bd..9cebe6c 100755
--- a/system/core/Config.php
+++ b/system/core/Config.php
@@ -45,30 +45,27 @@
 	 *
 	 * @var array
 	 */
-	public $config = array();
+	public $config =	array();
+	
 	/**
 	 * List of all loaded config files
 	 *
 	 * @var array
 	 */
-	public $is_loaded = array();
+	public $is_loaded =	array();
+	
 	/**
 	 * List of paths to search when trying to load a config file.
 	 * This must be public as it's used by the Loader class.
 	 *
 	 * @var array
 	 */
-	public $_config_paths = array(APPPATH);
+	public $_config_paths =	array(APPPATH);
 
 	/**
 	 * Constructor
 	 *
 	 * Sets the $config data from the primary config.php file as a class variable
-	 *
-	 * @param   string	the config file name
-	 * @param   boolean  if configuration values should be loaded into their own section
-	 * @param   boolean  true if errors should just return false, false if an error message should be displayed
-	 * @return  boolean  if the file was successfully loaded or not
 	 */
 	public function __construct()
 	{
@@ -188,10 +185,8 @@
 	/**
 	 * Fetch a config file item
 	 *
-	 *
 	 * @param	string	the config item name
 	 * @param	string	the index name
-	 * @param	bool
 	 * @return	string
 	 */
 	public function item($item, $index = '')
@@ -210,7 +205,6 @@
 	 * Fetch a config file item - adds slash after item (if item is not empty)
 	 *
 	 * @param	string	the config item name
-	 * @param	bool
 	 * @return	string
 	 */
 	public function slash_item($item)
@@ -354,4 +348,4 @@
 }
 
 /* End of file Config.php */
-/* Location: ./system/core/Config.php */
+/* Location: ./system/core/Config.php */
\ No newline at end of file
diff --git a/system/core/Controller.php b/system/core/Controller.php
index 05e1bf5..1f69146 100644
--- a/system/core/Controller.php
+++ b/system/core/Controller.php
@@ -25,8 +25,6 @@
  * @filesource
  */
 
-// ------------------------------------------------------------------------
-
 /**
  * CodeIgniter Application Controller Class
  *
@@ -41,8 +39,16 @@
  */
 class CI_Controller {
 
+	/**
+	 * Reference to the global CI instance
+	 *
+	 * @var	object
+	 */
 	private static $instance;
 
+	/**
+	 * Set up controller properties and methods
+	 */
 	public function __construct()
 	{
 		self::$instance =& $this;
@@ -60,6 +66,11 @@
 		log_message('debug', 'Controller Class Initialized');
 	}
 
+	/**
+	 * Return the CI object 
+	 *
+	 * @return object
+	 */
 	public static function &get_instance()
 	{
 		return self::$instance;
@@ -67,4 +78,4 @@
 }
 
 /* End of file Controller.php */
-/* Location: ./system/core/Controller.php */
+/* Location: ./system/core/Controller.php */
\ No newline at end of file
diff --git a/system/core/Exceptions.php b/system/core/Exceptions.php
index f36b315..2e9f0c7 100755
--- a/system/core/Exceptions.php
+++ b/system/core/Exceptions.php
@@ -36,39 +36,36 @@
  */
 class CI_Exceptions {
 
-	public $action;
-	public $severity;
-	public $message;
-	public $filename;
-	public $line;
-
 	/**
 	 * Nesting level of the output buffering mechanism
 	 *
-	 * @var int
+	 * @var	int
 	 */
 	public $ob_level;
 
 	/**
 	 * List if available error levels
 	 *
-	 * @var array
+	 * @var	array
 	 */
 	public $levels = array(
-				E_ERROR			=>	'Error',
-				E_WARNING		=>	'Warning',
-				E_PARSE			=>	'Parsing Error',
-				E_NOTICE		=>	'Notice',
-				E_CORE_ERROR		=>	'Core Error',
-				E_CORE_WARNING		=>	'Core Warning',
-				E_COMPILE_ERROR		=>	'Compile Error',
-				E_COMPILE_WARNING	=>	'Compile Warning',
-				E_USER_ERROR		=>	'User Error',
-				E_USER_WARNING		=>	'User Warning',
-				E_USER_NOTICE		=>	'User Notice',
-				E_STRICT		=>	'Runtime Notice'
-			);
+		E_ERROR			=>	'Error',
+		E_WARNING		=>	'Warning',
+		E_PARSE			=>	'Parsing Error',
+		E_NOTICE		=>	'Notice',
+		E_CORE_ERROR		=>	'Core Error',
+		E_CORE_WARNING		=>	'Core Warning',
+		E_COMPILE_ERROR		=>	'Compile Error',
+		E_COMPILE_WARNING	=>	'Compile Warning',
+		E_USER_ERROR		=>	'User Error',
+		E_USER_WARNING		=>	'User Warning',
+		E_USER_NOTICE		=>	'User Notice',
+		E_STRICT		=>	'Runtime Notice'
+	);
 
+	/**
+	 * Initialize execption class
+	 */
 	public function __construct()
 	{
 		$this->ob_level = ob_get_level();
diff --git a/system/core/Hooks.php b/system/core/Hooks.php
index 68e30ef..b42ecbe 100755
--- a/system/core/Hooks.php
+++ b/system/core/Hooks.php
@@ -43,19 +43,21 @@
 	 *
 	 * @var bool
 	 */
-	public $enabled		= FALSE;
+	public $enabled =	FALSE;
+	
 	/**
 	 * List of all hooks set in config/hooks.php
 	 *
 	 * @var array
 	 */
-	public $hooks		= array();
+	public $hooks =	array();
+	
 	/**
 	 * Determines wether hook is in progress, used to prevent infinte loops
 	 *
 	 * @var bool
 	 */
-	public $in_progress	= FALSE;
+	public $in_progress	=	FALSE;
 
 	/**
 	 * Initialize the Hooks Preferences
diff --git a/system/core/Input.php b/system/core/Input.php
index 6e68859..fc2a550 100755
--- a/system/core/Input.php
+++ b/system/core/Input.php
@@ -43,45 +43,51 @@
 	 *
 	 * @var string
 	 */
-	public $ip_address				= FALSE;
+	public $ip_address =	FALSE;
+	
 	/**
 	 * user agent (web browser) being used by the current user
 	 *
 	 * @var string
 	 */
-	public $user_agent				= FALSE;
+	public $user_agent =	FALSE;
+	
 	/**
 	 * If FALSE, then $_GET will be set to an empty array
 	 *
 	 * @var bool
 	 */
-	protected $_allow_get_array		= TRUE;
+	protected $_allow_get_array =	TRUE;
+	
 	/**
 	 * If TRUE, then newlines are standardized
 	 *
 	 * @var bool
 	 */
-	protected $_standardize_newlines	= TRUE;
+	protected $_standardize_newlines =	TRUE;
+	
 	/**
 	 * Determines whether the XSS filter is always active when GET, POST or COOKIE data is encountered
 	 * Set automatically based on config setting
 	 *
 	 * @var bool
 	 */
-	protected $_enable_xss			= FALSE;
+	protected $_enable_xss =	FALSE;
+	
 	/**
 	 * Enables a CSRF cookie token to be set.
 	 * Set automatically based on config setting
 	 *
 	 * @var bool
 	 */
-	protected $_enable_csrf			= FALSE;
+	protected $_enable_csrf =	FALSE;
+	
 	/**
 	 * List of all HTTP request headers
 	 *
 	 * @var array
 	 */
-	protected $headers			= array();
+	protected $headers =	array();
 
 	/**
 	 * Constructor
@@ -141,12 +147,12 @@
 	// --------------------------------------------------------------------
 
 	/**
-	* Fetch an item from the GET array
-	*
-	* @param	string
-	* @param	bool
-	* @return	string
-	*/
+	 * Fetch an item from the GET array
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
 	public function get($index = NULL, $xss_clean = FALSE)
 	{
 		// Check if a field has been provided
@@ -168,12 +174,12 @@
 	// --------------------------------------------------------------------
 
 	/**
-	* Fetch an item from the POST array
-	*
-	* @param	string
-	* @param	bool
-	* @return	string
-	*/
+	 * Fetch an item from the POST array
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
 	public function post($index = NULL, $xss_clean = FALSE)
 	{
 		// Check if a field has been provided
@@ -196,12 +202,12 @@
 	// --------------------------------------------------------------------
 
 	/**
-	* Fetch an item from either the GET array or the POST
-	*
-	* @param	string	The index key
-	* @param	bool	XSS cleaning
-	* @return	string
-	*/
+	 * Fetch an item from either the GET array or the POST
+	 *
+	 * @param	string	The index key
+	 * @param	bool	XSS cleaning
+	 * @return	string
+	 */
 	public function get_post($index = '', $xss_clean = FALSE)
 	{
 		return isset($_POST[$index])
@@ -212,12 +218,12 @@
 	// --------------------------------------------------------------------
 
 	/**
-	* Fetch an item from the COOKIE array
-	*
-	* @param	string
-	* @param	bool
-	* @return	string
-	*/
+	 * Fetch an item from the COOKIE array
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
 	public function cookie($index = '', $xss_clean = FALSE)
 	{
 		return $this->_fetch_from_array($_COOKIE, $index, $xss_clean);
@@ -226,21 +232,21 @@
 	// ------------------------------------------------------------------------
 
 	/**
-	* Set cookie
-	*
-	* Accepts seven parameters, or you can submit an associative
-	* array in the first parameter containing all the values.
-	*
-	* @param	mixed
-	* @param	string	the value of the cookie
-	* @param	string	the number of seconds until expiration
-	* @param	string	the cookie domain.  Usually:  .yourdomain.com
-	* @param	string	the cookie path
-	* @param	string	the cookie prefix
-	* @param	bool	true makes the cookie secure
-	* @param	bool	true makes the cookie accessible via http(s) only (no javascript)
-	* @return	void
-	*/
+	 * Set cookie
+	 *
+	 * Accepts seven parameters, or you can submit an associative
+	 * array in the first parameter containing all the values.
+	 *
+	 * @param	mixed
+	 * @param	string	the value of the cookie
+	 * @param	string	the number of seconds until expiration
+	 * @param	string	the cookie domain.  Usually:  .yourdomain.com
+	 * @param	string	the cookie path
+	 * @param	string	the cookie prefix
+	 * @param	bool	true makes the cookie secure
+	 * @param	bool	true makes the cookie accessible via http(s) only (no javascript)
+	 * @return	void
+	 */
 	public function set_cookie($name = '', $value = '', $expire = '', $domain = '', $path = '/', $prefix = '', $secure = FALSE, $httponly = FALSE)
 	{
 		if (is_array($name))
@@ -291,12 +297,12 @@
 	// --------------------------------------------------------------------
 
 	/**
-	* Fetch an item from the SERVER array
-	*
-	* @param	string
-	* @param	bool
-	* @return	string
-	*/
+	 * Fetch an item from the SERVER array
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
 	public function server($index = '', $xss_clean = FALSE)
 	{
 		return $this->_fetch_from_array($_SERVER, $index, $xss_clean);
@@ -305,10 +311,10 @@
 	// --------------------------------------------------------------------
 
 	/**
-	* Fetch the IP Address
-	*
-	* @return	string
-	*/
+	 * Fetch the IP Address
+	 *
+	 * @return	string
+	 */
 	public function ip_address()
 	{
 		if ($this->ip_address !== FALSE)
@@ -362,13 +368,13 @@
 	// --------------------------------------------------------------------
 
 	/**
-	* Validate IP Address
-	*
-	* Updated version suggested by Geert De Deckere
-	*
-	* @param	string
-	* @return	bool
-	*/
+	 * Validate IP Address
+	 *
+	 * Updated version suggested by Geert De Deckere
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
 	public function valid_ip($ip)
 	{
 		return (bool) filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4);
@@ -377,10 +383,10 @@
 	// --------------------------------------------------------------------
 
 	/**
-	* User Agent
-	*
-	* @return	string
-	*/
+	 * User Agent
+	 *
+	 * @return	string
+	 */
 	public function user_agent()
 	{
 		if ($this->user_agent !== FALSE)
@@ -394,24 +400,39 @@
 	// --------------------------------------------------------------------
 
 	/**
-	* Sanitize Globals
-	*
-	* This function does the following:
-	*
-	* - Unsets $_GET data (if query strings are not enabled)
-	* - Unsets all globals if register_globals is enabled
-	* - Standardizes newline characters to \n
-	*
-	* @return	void
-	*/
+	 * Sanitize Globals
+	 *
+	 * This function does the following:
+	 *
+	 * - Unsets $_GET data (if query strings are not enabled)
+	 * - Unsets all globals if register_globals is enabled
+	 * - Standardizes newline characters to \n
+	 *
+	 * @return	void
+	 */
 	protected function _sanitize_globals()
 	{
 		// It would be "wrong" to unset any of these GLOBALS.
-		$protected = array('_SERVER', '_GET', '_POST', '_FILES', '_REQUEST',
-					'_SESSION', '_ENV', 'GLOBALS', 'HTTP_RAW_POST_DATA',
-					'system_folder', 'application_folder', 'BM', 'EXT',
-					'CFG', 'URI', 'RTR', 'OUT', 'IN'
-				);
+		$protected = array(
+			'_SERVER',
+			'_GET',
+			'_POST',
+			'_FILES',
+			'_REQUEST',
+			'_SESSION',
+			'_ENV',
+			'GLOBALS',
+			'HTTP_RAW_POST_DATA',
+			'system_folder',
+			'application_folder',
+			'BM',
+			'EXT',
+			'CFG',
+			'URI',
+			'RTR',
+			'OUT',
+			'IN'
+		);
 
 		// Unset globals for securiy.
 		// This is effectively the same as register_globals = off
@@ -493,14 +514,14 @@
 	// --------------------------------------------------------------------
 
 	/**
-	* Clean Input Data
-	*
-	* This is a helper function. It escapes data and
-	* standardizes newline characters to \n
-	*
-	* @param	string
-	* @return	string
-	*/
+	 * Clean Input Data
+	 *
+	 * This is a helper function. It escapes data and
+	 * standardizes newline characters to \n
+	 *
+	 * @param	string
+	 * @return	string
+	 */
 	protected function _clean_input_data($str)
 	{
 		if (is_array($str))
@@ -550,15 +571,15 @@
 	// --------------------------------------------------------------------
 
 	/**
-	* Clean Keys
-	*
-	* This is a helper function. To prevent malicious users
-	* from trying to exploit keys we make sure that keys are
-	* only named with alpha-numeric text and a few other items.
-	*
-	* @param	string
-	* @return	string
-	*/
+	 * Clean Keys
+	 *
+	 * This is a helper function. To prevent malicious users
+	 * from trying to exploit keys we make sure that keys are
+	 * only named with alpha-numeric text and a few other items.
+	 *
+	 * @param	string
+	 * @return	string
+	 */
 	protected function _clean_input_keys($str)
 	{
 		if ( ! preg_match('/^[a-z0-9:_\/-]+$/i', $str))
@@ -695,4 +716,4 @@
 }
 
 /* End of file Input.php */
-/* Location: ./system/core/Input.php */
+/* Location: ./system/core/Input.php */
\ No newline at end of file
diff --git a/system/core/Lang.php b/system/core/Lang.php
index 9ef76f4..5cb0cad 100755
--- a/system/core/Lang.php
+++ b/system/core/Lang.php
@@ -25,8 +25,6 @@
  * @filesource
  */
 
-// ------------------------------------------------------------------------
-
 /**
  * Language Class
  *
@@ -43,14 +41,20 @@
 	 *
 	 * @var array
 	 */
-	public $language	= array();
+	public $language =	array();
+
 	/**
 	 * List of loaded language files
 	 *
 	 * @var array
 	 */
-	public $is_loaded	= array();
+	public $is_loaded =	array();
 
+	/**
+	 * Initialize language class
+	 *
+	 * @return	void
+	 */
 	public function __construct()
 	{
 		log_message('debug', 'Language Class Initialized');
@@ -74,22 +78,20 @@
 
 		if ($add_suffix == TRUE)
 		{
-			$langfile = str_replace('_lang.', '', $langfile).'_lang';
+			$langfile = str_replace('_lang', '', $langfile).'_lang';
 		}
 
 		$langfile .= '.php';
 
-		if (in_array($langfile, $this->is_loaded, TRUE))
-		{
-			return;
-		}
-
-		$config =& get_config();
-
 		if ($idiom == '')
 		{
-			$deft_lang = ( ! isset($config['language'])) ? 'english' : $config['language'];
-			$idiom = ($deft_lang == '') ? 'english' : $deft_lang;
+			$config =& get_config();
+			$idiom = ( ! empty($config['language'])) ? $config['language'] : 'english';
+		}
+
+		if ($return == FALSE && isset($this->is_loaded[$langfile]) && $this->is_loaded[$langfile] === $idiom)
+		{
+			return;
 		}
 
 		// Determine where the language file is and load it
@@ -121,6 +123,11 @@
 		if ( ! isset($lang) OR ! is_array($lang))
 		{
 			log_message('error', 'Language file contains no data: language/'.$idiom.'/'.$langfile);
+
+			if ($return == TRUE)
+			{
+				return array();
+			}
 			return;
 		}
 
@@ -129,9 +136,8 @@
 			return $lang;
 		}
 
-		$this->is_loaded[] = $langfile;
+		$this->is_loaded[$langfile] = $idiom;
 		$this->language = array_merge($this->language, $lang);
-		unset($lang);
 
 		log_message('debug', 'Language file loaded: language/'.$idiom.'/'.$langfile);
 		return TRUE;
@@ -161,4 +167,4 @@
 }
 
 /* End of file Lang.php */
-/* Location: ./system/core/Lang.php */
+/* Location: ./system/core/Lang.php */
\ No newline at end of file
diff --git a/system/core/Loader.php b/system/core/Loader.php
index 027ed20..bf7f6cb 100644
--- a/system/core/Loader.php
+++ b/system/core/Loader.php
@@ -45,75 +45,86 @@
 	 * @var int
 	 */
 	protected $_ci_ob_level;
+	
 	/**
 	 * List of paths to load views from
 	 *
 	 * @var array
 	 */
-	protected $_ci_view_paths		= array();
+	protected $_ci_view_paths =	array();
+	
 	/**
 	 * List of paths to load libraries from
 	 *
 	 * @var array
 	 */
-	protected $_ci_library_paths	= array();
+	protected $_ci_library_paths =	array();
+	
 	/**
 	 * List of paths to load models from
 	 *
 	 * @var array
 	 */
-	protected $_ci_model_paths		= array();
+	protected $_ci_model_paths =	array();
+	
 	/**
 	 * List of paths to load helpers from
 	 *
 	 * @var array
 	 */
-	protected $_ci_helper_paths		= array();
+	protected $_ci_helper_paths =	array();
+	
 	/**
 	 * List of loaded base classes
 	 *
 	 * @var array
 	 */
-	protected $_base_classes		= array(); // Set by the controller class
+	protected $_base_classes =	array(); // Set by the controller class
+	
 	/**
 	 * List of cached variables
 	 *
 	 * @var array
 	 */
-	protected $_ci_cached_vars		= array();
+	protected $_ci_cached_vars =	array();
+	
 	/**
 	 * List of loaded classes
 	 *
 	 * @var array
 	 */
-	protected $_ci_classes			= array();
+	protected $_ci_classes =	array();
+	
 	/**
 	 * List of loaded files
 	 *
 	 * @var array
 	 */
-	protected $_ci_loaded_files		= array();
+	protected $_ci_loaded_files =	array();
+	
 	/**
 	 * List of loaded models
 	 *
 	 * @var array
 	 */
-	protected $_ci_models			= array();
+	protected $_ci_models =	array();
+	
 	/**
 	 * List of loaded helpers
 	 *
 	 * @var array
 	 */
-	protected $_ci_helpers			= array();
+	protected $_ci_helpers =	array();
+	
 	/**
 	 * List of class name mappings
 	 *
 	 * @var array
 	 */
-	protected $_ci_varmap			= array(
-							'unit_test' => 'unit',
-							'user_agent' => 'agent'
-							);
+	protected $_ci_varmap =	array(
+		'unit_test' => 'unit',
+		'user_agent' => 'agent'
+	);
 
 	/**
 	 * Constructor
@@ -138,7 +149,6 @@
 	 *
 	 * This method is called once in CI_Controller.
 	 *
-	 * @param 	array
 	 * @return 	object
 	 */
 	public function initialize()
@@ -313,16 +323,16 @@
 	 *
 	 * @param	string	the DB credentials
 	 * @param	bool	whether to return the DB object
-	 * @param	bool	whether to enable active record (this allows us to override the config setting)
+	 * @param	bool	whether to enable query builder (this allows us to override the config setting)
 	 * @return	object
 	 */
-	public function database($params = '', $return = FALSE, $active_record = NULL)
+	public function database($params = '', $return = FALSE, $query_builder = NULL)
 	{
 		// Grab the super object
 		$CI =& get_instance();
 
 		// Do we even need to load the database class?
-		if (class_exists('CI_DB') && $return == FALSE && $active_record == NULL && isset($CI->db) && is_object($CI->db))
+		if (class_exists('CI_DB') && $return == FALSE && $query_builder == NULL && isset($CI->db) && is_object($CI->db))
 		{
 			return FALSE;
 		}
@@ -331,7 +341,7 @@
 
 		if ($return === TRUE)
 		{
-			return DB($params, $active_record);
+			return DB($params, $query_builder);
 		}
 
 		// Initialize the db variable. Needed to prevent
@@ -339,7 +349,7 @@
 		$CI->db = '';
 
 		// Load the DB class
-		$CI->db =& DB($params, $active_record);
+		$CI->db =& DB($params, $query_builder);
 	}
 
 	// --------------------------------------------------------------------
@@ -673,7 +683,7 @@
 
 		// Add config file path
 		$config =& $this->_ci_get_component('config');
-		array_unshift($config->_config_paths, $path);
+		array_push($config->_config_paths, $path);
 	}
 
 	// --------------------------------------------------------------------
@@ -713,7 +723,7 @@
 			array_shift($this->_ci_model_paths);
 			array_shift($this->_ci_helper_paths);
 			array_shift($this->_ci_view_paths);
-			array_shift($config->_config_paths);
+			array_pop($config->_config_paths);
 		}
 		else
 		{
@@ -1123,7 +1133,6 @@
 	 * The config/autoload.php file contains an array that permits sub-systems,
 	 * libraries, and helpers to be loaded automatically.
 	 *
-	 * @param	array
 	 * @return	void
 	 */
 	protected function _ci_autoloader()
@@ -1254,4 +1263,4 @@
 }
 
 /* End of file Loader.php */
-/* Location: ./system/core/Loader.php */
\ No newline at end of file
+/* Location: ./system/core/Loader.php */
diff --git a/system/core/Model.php b/system/core/Model.php
index 49b8d34..7c99719 100755
--- a/system/core/Model.php
+++ b/system/core/Model.php
@@ -25,8 +25,6 @@
  * @filesource
  */
 
-// ------------------------------------------------------------------------
-
 /**
  * CodeIgniter Model Class
  *
@@ -38,6 +36,9 @@
  */
 class CI_Model {
 
+	/**
+	 * Initialize CI_Model Class
+	 */
 	public function __construct()
 	{
 		log_message('debug', 'Model Class Initialized');
@@ -59,4 +60,4 @@
 }
 
 /* End of file Model.php */
-/* Location: ./system/core/Model.php */
+/* Location: ./system/core/Model.php */
\ No newline at end of file
diff --git a/system/core/Output.php b/system/core/Output.php
index 3cb4062..513c657 100755
--- a/system/core/Output.php
+++ b/system/core/Output.php
@@ -44,49 +44,59 @@
 	 * @var string
 	 */
 	public $final_output;
+	
 	/**
 	 * Cache expiration time
 	 *
 	 * @var int
 	 */
-	public $cache_expiration	= 0;
+	public $cache_expiration =	0;
+	
 	/**
 	 * List of server headers
 	 *
 	 * @var array
 	 */
-	public $headers			= array();
+	public $headers =	array();
+	
 	/**
 	 * List of mime types
 	 *
 	 * @var array
 	 */
-	public $mime_types		= array();
+	public $mime_types =	array();
+	
 	/**
 	 * Determines wether profiler is enabled
 	 *
 	 * @var book
 	 */
-	public $enable_profiler		= FALSE;
+	public $enable_profiler =	FALSE;
+	
 	/**
 	 * Determines if output compression is enabled
 	 *
 	 * @var bool
 	 */
-	protected $_zlib_oc		= FALSE;
+	protected $_zlib_oc =	FALSE;
+	
 	/**
 	 * List of profiler sections
 	 *
 	 * @var array
 	 */
-	protected $_profiler_sections = array();
+	protected $_profiler_sections =	array();
+	
 	/**
 	 * Whether or not to parse variables like {elapsed_time} and {memory_usage}
 	 *
 	 * @var bool
 	 */
-	public $parse_exec_vars		= TRUE;
+	public $parse_exec_vars =	TRUE;
 
+	/**
+	 * Set up Output class
+	 */
 	public function __construct()
 	{
 		$this->_zlib_oc = @ini_get('zlib.output_compression');
diff --git a/system/core/Router.php b/system/core/Router.php
index 5477fed..9314052 100755
--- a/system/core/Router.php
+++ b/system/core/Router.php
@@ -44,36 +44,42 @@
 	 * @var object
 	 */
 	public $config;
+	
 	/**
 	 * List of routes
 	 *
 	 * @var array
 	 */
-	public $routes			= array();
+	public $routes =	array();
+	
 	/**
 	 * List of error routes
 	 *
 	 * @var array
 	 */
-	public $error_routes	= array();
+	public $error_routes =	array();
+	
 	/**
 	 * Current class name
 	 *
 	 * @var string
 	 */
-	public $class			= '';
+	public $class =	'';
+	
 	/**
 	 * Current method name
 	 *
 	 * @var string
 	 */
-	public $method			= 'index';
+	public $method =	'index';
+	
 	/**
 	 * Sub-directory that contains the requested controller class
 	 *
 	 * @var string
 	 */
-	public $directory		= '';
+	public $directory =	'';
+	
 	/**
 	 * Default controller (and method if specific)
 	 *
@@ -211,7 +217,6 @@
 	 * input, and sets the current class/method
 	 *
 	 * @param	array
-	 * @param	bool
 	 * @return	void
 	 */
 	protected function _set_request($segments = array())
diff --git a/system/core/Security.php b/system/core/Security.php
index 6574663..c82b69f 100755
--- a/system/core/Security.php
+++ b/system/core/Security.php
@@ -41,14 +41,14 @@
 	 *
 	 * @var string
 	 */
-	protected $_xss_hash			= '';
+	protected $_xss_hash =	'';
 
 	/**
 	 * Random Hash for Cross Site Request Forgery Protection Cookie
 	 *
 	 * @var string
 	 */
-	protected $_csrf_hash			= '';
+	protected $_csrf_hash =	'';
 
 	/**
 	 * Expiration time for Cross Site Request Forgery Protection Cookie
@@ -56,39 +56,39 @@
 	 *
 	 * @var int
 	 */
-	protected $_csrf_expire			= 7200;
+	protected $_csrf_expire =	7200;
 
 	/**
 	 * Token name for Cross Site Request Forgery Protection Cookie
 	 *
 	 * @var string
 	 */
-	protected $_csrf_token_name		= 'ci_csrf_token';
+	protected $_csrf_token_name =	'ci_csrf_token';
 
 	/**
 	 * Cookie name for Cross Site Request Forgery Protection Cookie
 	 *
 	 * @var string
 	 */
-	protected $_csrf_cookie_name		= 'ci_csrf_token';
+	protected $_csrf_cookie_name =	'ci_csrf_token';
 
 	/**
 	 * List of never allowed strings
 	 *
 	 * @var array
 	 */
-	protected $_never_allowed_str = array(
-						'document.cookie'	=> '[removed]',
-						'document.write'	=> '[removed]',
-						'.parentNode'		=> '[removed]',
-						'.innerHTML'		=> '[removed]',
-						'window.location'	=> '[removed]',
-						'-moz-binding'		=> '[removed]',
-						'<!--'				=> '&lt;!--',
-						'-->'				=> '--&gt;',
-						'<![CDATA['			=> '&lt;![CDATA[',
-						'<comment>'			=> '&lt;comment&gt;'
-					);
+	protected $_never_allowed_str =	array(
+		'document.cookie'	=> '[removed]',
+		'document.write'	=> '[removed]',
+		'.parentNode'		=> '[removed]',
+		'.innerHTML'		=> '[removed]',
+		'window.location'	=> '[removed]',
+		'-moz-binding'		=> '[removed]',
+		'<!--'				=> '&lt;!--',
+		'-->'				=> '--&gt;',
+		'<![CDATA['			=> '&lt;![CDATA[',
+		'<comment>'			=> '&lt;comment&gt;'
+	);
 
 	/**
 	 * List of never allowed regex replacement
@@ -96,13 +96,16 @@
 	 * @var array
 	 */
 	protected $_never_allowed_regex = array(
-						'javascript\s*:',
-						'expression\s*(\(|&\#40;)', // CSS and IE
-						'vbscript\s*:', // IE, surprise!
-						'Redirect\s+302',
-						"([\"'])?data\s*:[^\\1]*?base64[^\\1]*?,[^\\1]*?\\1?"
-					);
-
+		'javascript\s*:',
+		'expression\s*(\(|&\#40;)', // CSS and IE
+		'vbscript\s*:', // IE, surprise!
+		'Redirect\s+302',
+		"([\"'])?data\s*:[^\\1]*?base64[^\\1]*?,[^\\1]*?\\1?"
+	);
+	
+	/**
+	 * Initialize security class
+	 */
 	public function __construct()
 	{
 		// Is CSRF protection enabled?
@@ -363,9 +366,10 @@
 		 * These words are compacted back to their correct state.
 		 */
 		$words = array(
-				'javascript', 'expression', 'vbscript', 'script', 'base64',
-				'applet', 'alert', 'document', 'write', 'cookie', 'window'
-			);
+			'javascript', 'expression', 'vbscript', 'script', 'base64',
+			'applet', 'alert', 'document', 'write', 'cookie', 'window'
+		);
+
 
 		foreach ($words as $word)
 		{
@@ -523,23 +527,23 @@
 	public function sanitize_filename($str, $relative_path = FALSE)
 	{
 		$bad = array(
-				'../', '<!--', '-->', '<', '>',
-				"'", '"', '&', '$', '#',
-				'{', '}', '[', ']', '=',
-				';', '?', '%20', '%22',
-				'%3c',		// <
-				'%253c',	// <
-				'%3e',		// >
-				'%0e',		// >
-				'%28',		// (
-				'%29',		// )
-				'%2528',	// (
-				'%26',		// &
-				'%24',		// $
-				'%3f',		// ?
-				'%3b',		// ;
-				'%3d'		// =
-			);
+			'../', '<!--', '-->', '<', '>',
+			"'", '"', '&', '$', '#',
+			'{', '}', '[', ']', '=',
+			';', '?', '%20', '%22',
+			'%3c',		// <
+			'%253c',	// <
+			'%3e',		// >
+			'%0e',		// >
+			'%28',		// (
+			'%29',		// )
+			'%2528',	// (
+			'%26',		// &
+			'%24',		// $
+			'%3f',		// ?
+			'%3b',		// ;
+			'%3d'		// =
+		);
 
 		if ( ! $relative_path)
 		{
@@ -559,8 +563,8 @@
 	 * Callback function for xss_clean() to remove whitespace from
 	 * things like j a v a s c r i p t
 	 *
-	 * @param	type
-	 * @return	type
+	 * @param	array
+	 * @return	string
 	 */
 	protected function _compact_exploded_words($matches)
 	{
@@ -569,8 +573,8 @@
 
 	// --------------------------------------------------------------------
 
-	/*
-	 * Remove Evil HTML Attributes (like evenhandlers and style)
+	/**
+	 * Remove Evil HTML Attributes (like event handlers and style)
 	 *
 	 * It removes the evil attribute and either:
 	 * 	- Everything up until a space
diff --git a/system/core/URI.php b/system/core/URI.php
index 48bb7ae..cf82c58 100755
--- a/system/core/URI.php
+++ b/system/core/URI.php
@@ -24,8 +24,6 @@
  * @since		Version 1.0
  */
 
-// ------------------------------------------------------------------------
-
 /**
  * URI Class
  *
@@ -44,26 +42,29 @@
 	 *
 	 * @var array
 	 */
-	public $keyval		= array();
+	public $keyval =	array();
+	
 	/**
 	 * Current uri string
 	 *
 	 * @var string
 	 */
 	public $uri_string;
+	
 	/**
 	 * List of uri segments
 	 *
 	 * @var array
 	 */
-	public $segments	= array();
+	public $segments =	array();
+	
 	/**
 	 * Re-indexed list of uri segments
 	 * Starts at 1 instead of 0
 	 *
 	 * @var array
 	 */
-	public $rsegments	= array();
+	public $rsegments =	array();
 
 	/**
 	 * Constructor
@@ -326,6 +327,7 @@
 	}
 
 	// --------------------------------------------------------------------
+	
 	/**
 	 * Re-index Segments
 	 *
@@ -406,6 +408,9 @@
 	{
 		return $this->_uri_to_assoc($n, $default, 'segment');
 	}
+	
+	// --------------------------------------------------------------------
+	
 	/**
 	 * Identical to above only it uses the re-routed segment array
 	 *
@@ -501,7 +506,6 @@
 	/**
 	 * Generate a URI string from an associative array
 	 *
-	 *
 	 * @param	array	an associative array of key/values
 	 * @return	array
 	 */
diff --git a/system/core/Utf8.php b/system/core/Utf8.php
index ba35674..122020a 100644
--- a/system/core/Utf8.php
+++ b/system/core/Utf8.php
@@ -25,8 +25,6 @@
  * @filesource
  */
 
-// ------------------------------------------------------------------------
-
 /**
  * Utf8 Class
  *
@@ -161,4 +159,4 @@
 }
 
 /* End of file Utf8.php */
-/* Location: ./system/core/Utf8.php */
+/* Location: ./system/core/Utf8.php */
\ No newline at end of file
diff --git a/system/database/DB.php b/system/database/DB.php
index 0d81e40..b28439b 100755
--- a/system/database/DB.php
+++ b/system/database/DB.php
@@ -32,9 +32,9 @@
  * @author		EllisLab Dev Team
  * @link		http://codeigniter.com/user_guide/database/
  * @param 	string
- * @param 	bool	Determines if active record should be used or not
+ * @param 	bool	Determines if query builder should be used or not
  */
-function &DB($params = '', $active_record_override = NULL)
+function &DB($params = '', $query_builder_override = NULL)
 {
 	// Load the DB config file if a DSN string wasn't passed
 	if (is_string($params) && strpos($params, '://') === FALSE)
@@ -111,22 +111,22 @@
 		show_error('You have not selected a database type to connect to.');
 	}
 
-	// Load the DB classes. Note: Since the active record class is optional
+	// Load the DB classes. Note: Since the query builder class is optional
 	// we need to dynamically create a class that extends proper parent class
-	// based on whether we're using the active record class or not.
-	if ($active_record_override !== NULL)
+	// based on whether we're using the query builder class or not.
+	if ($query_builder_override !== NULL)
 	{
-		$active_record = $active_record_override;
+		$query_builder = $query_builder_override;
 	}
 
 	require_once(BASEPATH.'database/DB_driver.php');
 
-	if ( ! isset($active_record) OR $active_record == TRUE)
+	if ( ! isset($query_builder) OR $query_builder == TRUE)
 	{
-		require_once(BASEPATH.'database/DB_active_rec.php');
+		require_once(BASEPATH.'database/DB_query_builder.php');
 		if ( ! class_exists('CI_DB'))
 		{
-			class CI_DB extends CI_DB_active_record { }
+			class CI_DB extends CI_DB_query_builder { }
 		}
 	}
 	elseif ( ! class_exists('CI_DB'))
@@ -159,4 +159,4 @@
 }
 
 /* End of file DB.php */
-/* Location: ./system/database/DB.php */
\ No newline at end of file
+/* Location: ./system/database/DB.php */
diff --git a/system/database/DB_driver.php b/system/database/DB_driver.php
index cb04c71..ef77b59 100644
--- a/system/database/DB_driver.php
+++ b/system/database/DB_driver.php
@@ -1208,7 +1208,7 @@
 	/**
 	 * Protect Identifiers
 	 *
-	 * This function is used extensively by the Active Record class, and by
+	 * This function is used extensively by the Query Builder class, and by
 	 * a couple functions in this class.
 	 * It takes a column or table name (optionally with an alias) and inserts
 	 * the table prefix onto it. Some logic is necessary in order to deal with
@@ -1283,7 +1283,7 @@
 			// Does the first segment of the exploded item match
 			// one of the aliases previously identified? If so,
 			// we have nothing more to do other than escape the item
-			if (in_array($parts[0], $this->ar_aliased_tables))
+			if (in_array($parts[0], $this->qb_aliased_tables))
 			{
 				if ($protect_identifiers === TRUE)
 				{
@@ -1380,7 +1380,7 @@
 	// --------------------------------------------------------------------
 
 	/**
-	 * Dummy method that allows Active Record class to be disabled
+	 * Dummy method that allows Query Builder class to be disabled
 	 *
 	 * This function is used extensively by every db driver.
 	 *
@@ -1393,4 +1393,4 @@
 }
 
 /* End of file DB_driver.php */
-/* Location: ./system/database/DB_driver.php */
\ No newline at end of file
+/* Location: ./system/database/DB_driver.php */
diff --git a/system/database/DB_active_rec.php b/system/database/DB_query_builder.php
similarity index 79%
rename from system/database/DB_active_rec.php
rename to system/database/DB_query_builder.php
index e78b2a8..d0af66d 100644
--- a/system/database/DB_active_rec.php
+++ b/system/database/DB_query_builder.php
@@ -26,9 +26,9 @@
  */
 
 /**
- * Active Record Class
+ * Query Builder Class
  *
- * This is the platform-independent base Active Record implementation class.
+ * This is the platform-independent base Query Builder implementation class.
  *
  * @package		CodeIgniter
  * @subpackage	Drivers
@@ -36,46 +36,47 @@
  * @author		EllisLab Dev Team
  * @link		http://codeigniter.com/user_guide/database/
  */
-abstract class CI_DB_active_record extends CI_DB_driver {
+
+abstract class CI_DB_query_builder extends CI_DB_driver {
 
 	protected $return_delete_sql		= FALSE;
 	protected $reset_delete_data		= FALSE;
 
-	protected $ar_select			= array();
-	protected $ar_distinct			= FALSE;
-	protected $ar_from			= array();
-	protected $ar_join			= array();
-	protected $ar_where			= array();
-	protected $ar_like			= array();
-	protected $ar_groupby			= array();
-	protected $ar_having			= array();
-	protected $ar_keys			= array();
-	protected $ar_limit			= FALSE;
-	protected $ar_offset			= FALSE;
-	protected $ar_order			= FALSE;
-	protected $ar_orderby			= array();
-	protected $ar_set			= array();
-	protected $ar_wherein			= array();
-	protected $ar_aliased_tables		= array();
-	protected $ar_store_array		= array();
-	protected $ar_where_group_started	= FALSE;
-	protected $ar_where_group_count		= 0;
+	protected $qb_select			= array();
+	protected $qb_distinct			= FALSE;
+	protected $qb_from			= array();
+	protected $qb_join			= array();
+	protected $qb_where			= array();
+	protected $qb_like			= array();
+	protected $qb_groupby			= array();
+	protected $qb_having			= array();
+	protected $qb_keys			= array();
+	protected $qb_limit			= FALSE;
+	protected $qb_offset			= FALSE;
+	protected $qb_order			= FALSE;
+	protected $qb_orderby			= array();
+	protected $qb_set			= array();
+	protected $qb_wherein			= array();
+	protected $qb_aliased_tables		= array();
+	protected $qb_store_array		= array();
+	protected $qb_where_group_started	= FALSE;
+	protected $qb_where_group_count		= 0;
 
-	// Active Record Caching variables
-	protected $ar_caching				= FALSE;
-	protected $ar_cache_exists			= array();
-	protected $ar_cache_select			= array();
-	protected $ar_cache_from			= array();
-	protected $ar_cache_join			= array();
-	protected $ar_cache_where			= array();
-	protected $ar_cache_like			= array();
-	protected $ar_cache_groupby			= array();
-	protected $ar_cache_having			= array();
-	protected $ar_cache_orderby			= array();
-	protected $ar_cache_set				= array();
+	// Query Builder Caching variables
+	protected $qb_caching				= FALSE;
+	protected $qb_cache_exists			= array();
+	protected $qb_cache_select			= array();
+	protected $qb_cache_from			= array();
+	protected $qb_cache_join			= array();
+	protected $qb_cache_where			= array();
+	protected $qb_cache_like			= array();
+	protected $qb_cache_groupby			= array();
+	protected $qb_cache_having			= array();
+	protected $qb_cache_orderby			= array();
+	protected $qb_cache_set				= array();
 
-	protected $ar_no_escape 			= array();
-	protected $ar_cache_no_escape			= array();
+	protected $qb_no_escape 			= array();
+	protected $qb_cache_no_escape			= array();
 
 	/**
 	 * Select
@@ -98,14 +99,14 @@
 
 			if ($val != '')
 			{
-				$this->ar_select[] = $val;
-				$this->ar_no_escape[] = $escape;
+				$this->qb_select[] = $val;
+				$this->qb_no_escape[] = $escape;
 
-				if ($this->ar_caching === TRUE)
+				if ($this->qb_caching === TRUE)
 				{
-					$this->ar_cache_select[] = $val;
-					$this->ar_cache_exists[] = 'select';
-					$this->ar_cache_no_escape[] = $escape;
+					$this->qb_cache_select[] = $val;
+					$this->qb_cache_exists[] = 'select';
+					$this->qb_cache_no_escape[] = $escape;
 				}
 			}
 		}
@@ -211,13 +212,14 @@
 		}
 
 		$sql = $this->protect_identifiers($type.'('.trim($select).')').' AS '.$this->protect_identifiers(trim($alias));
-		$this->ar_select[] = $sql;
-		$this->ar_no_escape[] = NULL;
+		
+		$this->qb_select[] = $sql;
+		$this->qb_no_escape[] = NULL;
 
-		if ($this->ar_caching === TRUE)
+		if ($this->qb_caching === TRUE)
 		{
-			$this->ar_cache_select[] = $sql;
-			$this->ar_cache_exists[] = 'select';
+			$this->qb_cache_select[] = $sql;
+			$this->qb_cache_exists[] = 'select';
 		}
 
 		return $this;
@@ -254,7 +256,7 @@
 	 */
 	public function distinct($val = TRUE)
 	{
-		$this->ar_distinct = (is_bool($val)) ? $val : TRUE;
+		$this->qb_distinct = (is_bool($val)) ? $val : TRUE;
 		return $this;
 	}
 
@@ -278,12 +280,13 @@
 				{
 					$v = trim($v);
 					$this->_track_aliases($v);
-					$v = $this->ar_from[] = $this->protect_identifiers($v, TRUE, NULL, FALSE);
 
-					if ($this->ar_caching === TRUE)
+					$this->qb_from[] = $v = $this->protect_identifiers($v, TRUE, NULL, FALSE);
+
+					if ($this->qb_caching === TRUE)
 					{
-						$this->ar_cache_from[] = $v;
-						$this->ar_cache_exists[] = 'from';
+						$this->qb_cache_from[] = $v;
+						$this->qb_cache_exists[] = 'from';
 					}
 				}
 			}
@@ -292,14 +295,15 @@
 				$val = trim($val);
 
 				// Extract any aliases that might exist. We use this information
-				// in the _protect_identifiers to know whether to add a table prefix
+				// in the protect_identifiers to know whether to add a table prefix
 				$this->_track_aliases($val);
-				$this->ar_from[] = $val = $this->protect_identifiers($val, TRUE, NULL, FALSE);
 
-				if ($this->ar_caching === TRUE)
+				$this->qb_from[] = $val = $this->protect_identifiers($val, TRUE, NULL, FALSE);
+
+				if ($this->qb_caching === TRUE)
 				{
-					$this->ar_cache_from[] = $val;
-					$this->ar_cache_exists[] = 'from';
+					$this->qb_cache_from[] = $val;
+					$this->qb_cache_exists[] = 'from';
 				}
 			}
 		}
@@ -336,7 +340,7 @@
 		}
 
 		// Extract any aliases that might exist. We use this information
-		// in the _protect_identifiers to know whether to add a table prefix
+		// in the protect_identifiers to know whether to add a table prefix
 		$this->_track_aliases($table);
 
 		// Strip apart the condition and protect the identifiers
@@ -346,12 +350,12 @@
 		}
 
 		// Assemble the JOIN statement
-		$this->ar_join[] = $join = $type.'JOIN '.$this->protect_identifiers($table, TRUE, NULL, FALSE).' ON '.$cond;
+		$this->qb_join[] = $join = $type.'JOIN '.$this->protect_identifiers($table, TRUE, NULL, FALSE).' ON '.$cond;
 
-		if ($this->ar_caching === TRUE)
+		if ($this->qb_caching === TRUE)
 		{
-			$this->ar_cache_join[] = $join;
-			$this->ar_cache_exists[] = 'join';
+			$this->qb_cache_join[] = $join;
+			$this->qb_cache_exists[] = 'join';
 		}
 
 		return $this;
@@ -420,7 +424,7 @@
 
 		foreach ($key as $k => $v)
 		{
-			$prefix = (count($this->ar_where) === 0 && count($this->ar_cache_where) === 0) ? '' : $type;
+			$prefix = (count($this->qb_where) === 0 && count($this->qb_cache_where) === 0) ? '' : $type;
 
 			if (is_null($v) && ! $this->_has_operator($k))
 			{
@@ -446,11 +450,11 @@
 				$k = $this->protect_identifiers($k, FALSE, $escape);
 			}
 
-			$this->ar_where[] = $prefix.$k.$v;
-			if ($this->ar_caching === TRUE)
+			$this->qb_where[] = $prefix.$k.$v;
+			if ($this->qb_caching === TRUE)
 			{
-				$this->ar_cache_where[] = $prefix.$k.$v;
-				$this->ar_cache_exists[] = 'where';
+				$this->qb_cache_where[] = $prefix.$k.$v;
+				$this->qb_cache_exists[] = 'where';
 			}
 
 		}
@@ -557,20 +561,20 @@
 
 		foreach ($values as $value)
 		{
-			$this->ar_wherein[] = $this->escape($value);
+			$this->qb_wherein[] = $this->escape($value);
 		}
 
-		$prefix = (count($this->ar_where) === 0) ? '' : $type;
-		$this->ar_where[] = $where_in = $prefix.$this->protect_identifiers($key).$not.' IN ('.implode(', ', $this->ar_wherein).') ';
+		$prefix = (count($this->qb_where) === 0) ? '' : $type;
+		$this->qb_where[] = $where_in = $prefix.$this->protect_identifiers($key).$not.' IN ('.implode(', ', $this->qb_wherein).') ';
 
-		if ($this->ar_caching === TRUE)
+		if ($this->qb_caching === TRUE)
 		{
-			$this->ar_cache_where[] = $where_in;
-			$this->ar_cache_exists[] = 'where';
+			$this->qb_cache_where[] = $where_in;
+			$this->qb_cache_exists[] = 'where';
 		}
 
 		// reset the array for multiple calls
-		$this->ar_wherein = array();
+		$this->qb_wherein = array();
 		return $this;
 	}
 
@@ -666,7 +670,7 @@
 		foreach ($field as $k => $v)
 		{
 			$k = $this->protect_identifiers($k);
-			$prefix = (count($this->ar_like) === 0) ? '' : $type;
+			$prefix = (count($this->qb_like) === 0) ? '' : $type;
 			$v = $this->escape_like_str($v);
 
 			if ($side === 'none')
@@ -692,11 +696,11 @@
 				$like_statement = $like_statement.sprintf($this->_like_escape_str, $this->_like_escape_chr);
 			}
 
-			$this->ar_like[] = $like_statement;
-			if ($this->ar_caching === TRUE)
+			$this->qb_like[] = $like_statement;
+			if ($this->qb_caching === TRUE)
 			{
-				$this->ar_cache_like[] = $like_statement;
-				$this->ar_cache_exists[] = 'like';
+				$this->qb_cache_like[] = $like_statement;
+				$this->qb_cache_exists[] = 'like';
 			}
 
 		}
@@ -716,13 +720,14 @@
 	public function group_start($not = '', $type = 'AND ')
 	{
 		$type = $this->_group_get_type($type);
-		$this->ar_where_group_started = TRUE;
-		$prefix = (count($this->ar_where) === 0 && count($this->ar_cache_where) === 0) ? '' : $type;
-		$this->ar_where[] = $value = $prefix.$not.str_repeat(' ', ++$this->ar_where_group_count).' (';
 
-		if ($this->ar_caching)
+		$this->qb_where_group_started = TRUE;
+		$prefix = (count($this->qb_where) === 0 && count($this->qb_cache_where) === 0) ? '' : $type;
+		$this->qb_where[] = $value = $prefix.$not.str_repeat(' ', ++$this->qb_where_group_count).' (';
+
+		if ($this->qb_caching)
 		{
-			$this->ar_cache_where[] = $value;
+			$this->qb_cache_where[] = $value;
 		}
 
 		return $this;
@@ -773,12 +778,12 @@
 	 */
 	public function group_end()
 	{
-		$this->ar_where_group_started = FALSE;
-		$this->ar_where[] = $value = str_repeat(' ', $this->ar_where_group_count--) . ')';
+		$this->qb_where_group_started = FALSE;
+		$this->qb_where[] = $value = str_repeat(' ', $this->qb_where_group_count--) . ')';
 
-		if ($this->ar_caching)
+		if ($this->qb_caching)
 		{
-			$this->ar_cache_where[] = $value;
+			$this->qb_cache_where[] = $value;
 		}
 
 		return $this;
@@ -796,10 +801,10 @@
 	 */
 	protected function _group_get_type($type)
 	{
-		if ($this->ar_where_group_started)
+		if ($this->qb_where_group_started)
 		{
 			$type = '';
-			$this->ar_where_group_started = FALSE;
+			$this->qb_where_group_started = FALSE;
 		}
 
 		return $type;
@@ -826,12 +831,12 @@
 
 			if ($val != '')
 			{
-				$this->ar_groupby[] = $val = $this->protect_identifiers($val);
+				$this->qb_groupby[] = $val = $this->protect_identifiers($val);
 
-				if ($this->ar_caching === TRUE)
+				if ($this->qb_caching === TRUE)
 				{
-					$this->ar_cache_groupby[] = $val;
-					$this->ar_cache_exists[] = 'groupby';
+					$this->qb_cache_groupby[] = $val;
+					$this->qb_cache_exists[] = 'groupby';
 				}
 			}
 		}
@@ -891,7 +896,7 @@
 
 		foreach ($key as $k => $v)
 		{
-			$prefix = (count($this->ar_having) === 0) ? '' : $type;
+			$prefix = (count($this->qb_having) === 0) ? '' : $type;
 
 			if ($escape === TRUE)
 			{
@@ -908,11 +913,11 @@
 				$v = ' '.$this->escape($v);
 			}
 
-			$this->ar_having[] = $prefix.$k.$v;
-			if ($this->ar_caching === TRUE)
+			$this->qb_having[] = $prefix.$k.$v;
+			if ($this->qb_caching === TRUE)
 			{
-				$this->ar_cache_having[] = $prefix.$k.$v;
-				$this->ar_cache_exists[] = 'having';
+				$this->qb_cache_having[] = $prefix.$k.$v;
+				$this->qb_cache_exists[] = 'having';
 			}
 		}
 
@@ -948,7 +953,7 @@
 			foreach (explode(',', $orderby) as $part)
 			{
 				$part = trim($part);
-				if ( ! in_array($part, $this->ar_aliased_tables))
+				if ( ! in_array($part, $this->qb_aliased_tables))
 				{
 					$part = $this->protect_identifiers(trim($part));
 				}
@@ -966,12 +971,12 @@
 			}
 		}
 
-		$this->ar_orderby[] = $orderby_statement = $orderby.$direction;
+		$this->qb_orderby[] = $orderby_statement = $orderby.$direction;
 
-		if ($this->ar_caching === TRUE)
+		if ($this->qb_caching === TRUE)
 		{
-			$this->ar_cache_orderby[] = $orderby_statement;
-			$this->ar_cache_exists[] = 'orderby';
+			$this->qb_cache_orderby[] = $orderby_statement;
+			$this->qb_cache_exists[] = 'orderby';
 		}
 
 		return $this;
@@ -988,11 +993,11 @@
 	 */
 	public function limit($value, $offset = NULL)
 	{
-		$this->ar_limit = (int) $value;
+		$this->qb_limit = (int) $value;
 
 		if ( ! is_null($offset))
 		{
-			$this->ar_offset = (int) $offset;
+			$this->qb_offset = (int) $offset;
 		}
 
 		return $this;
@@ -1008,7 +1013,7 @@
 	 */
 	public function offset($offset)
 	{
-		$this->ar_offset = (int) $offset;
+		$this->qb_offset = (int) $offset;
 		return $this;
 	}
 
@@ -1035,11 +1040,11 @@
 		{
 			if ($escape === FALSE)
 			{
-				$this->ar_set[$this->protect_identifiers($k)] = $v;
+				$this->qb_set[$this->protect_identifiers($k)] = $v;
 			}
 			else
 			{
-				$this->ar_set[$this->protect_identifiers($k, FALSE, TRUE)] = $this->escape($v);
+				$this->qb_set[$this->protect_identifiers($k, FALSE, TRUE)] = $this->escape($v);
 			}
 		}
 
@@ -1054,7 +1059,7 @@
 	 * Compiles a SELECT query string and returns the sql.
 	 *
 	 * @param	string	the table name to select from (optional)
-	 * @param	bool	TRUE: resets AR values; FALSE: leave AR vaules alone
+	 * @param	bool	TRUE: resets QB values; FALSE: leave QB vaules alone
 	 * @return	string
 	 */
 	public function get_compiled_select($table = '', $reset = TRUE)
@@ -1110,7 +1115,7 @@
 	 * "Count All Results" query
 	 *
 	 * Generates a platform-specific query string that counts all records
-	 * returned by an Active Record query.
+	 * returned by an Query Builder query.
 	 *
 	 * @param	string
 	 * @return	string
@@ -1186,7 +1191,7 @@
 			$this->set_insert_batch($set);
 		}
 
-		if (count($this->ar_set) === 0)
+		if (count($this->qb_set) === 0)
 		{
 			if ($this->db_debug)
 			{
@@ -1198,18 +1203,18 @@
 
 		if ($table == '')
 		{
-			if ( ! isset($this->ar_from[0]))
+			if ( ! isset($this->qb_from[0]))
 			{
 				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
 			}
 
-			$table = $this->ar_from[0];
+			$table = $this->qb_from[0];
 		}
 
 		// Batch this baby
-		for ($i = 0, $total = count($this->ar_set); $i < $total; $i += 100)
+		for ($i = 0, $total = count($this->qb_set); $i < $total; $i += 100)
 		{
-			$this->query($this->_insert_batch($this->protect_identifiers($table, TRUE, NULL, FALSE), $this->ar_keys, array_slice($this->ar_set, $i, 100)));
+			$this->query($this->_insert_batch($this->protect_identifiers($table, TRUE, NULL, FALSE), $this->qb_keys, array_slice($this->qb_set, $i, 100)));
 		}
 
 		$this->_reset_write();
@@ -1261,7 +1266,7 @@
 			if (count(array_diff($keys, array_keys($row))) > 0 OR count(array_diff(array_keys($row), $keys)) > 0)
 			{
 				// batch function above returns an error on an empty array
-				$this->ar_set[] = array();
+				$this->qb_set[] = array();
 				return;
 			}
 
@@ -1269,7 +1274,7 @@
 
 			if ($escape === FALSE)
 			{
-				$this->ar_set[] =  '('.implode(',', $row).')';
+				$this->qb_set[] =  '('.implode(',', $row).')';
 			}
 			else
 			{
@@ -1279,13 +1284,13 @@
 					$clean[] = $this->escape($value);
 				}
 
-				$this->ar_set[] =  '('.implode(',', $clean).')';
+				$this->qb_set[] =  '('.implode(',', $clean).')';
 			}
 		}
 
 		foreach ($keys as $k)
 		{
-			$this->ar_keys[] = $this->protect_identifiers($k);
+			$this->qb_keys[] = $this->protect_identifiers($k);
 		}
 
 		return $this;
@@ -1299,7 +1304,7 @@
 	 * Compiles an insert query and returns the sql
 	 *
 	 * @param	string	the table to insert into
-	 * @param	bool	TRUE: reset AR values; FALSE: leave AR values alone
+	 * @param	bool	TRUE: reset QB values; FALSE: leave QB values alone
 	 * @return	string
 	 */
 	public function get_compiled_insert($table = '', $reset = TRUE)
@@ -1310,9 +1315,11 @@
 		}
 
 		$sql = $this->_insert(
-			$this->protect_identifiers($this->ar_from[0], TRUE, NULL, FALSE),
-			array_keys($this->ar_set),
-			array_values($this->ar_set)
+			$this->protect_identifiers(
+				$this->qb_from[0], TRUE, NULL, FALSE
+			),
+			array_keys($this->qb_set),
+			array_values($this->qb_set)
 		);
 
 		if ($reset === TRUE)
@@ -1347,9 +1354,11 @@
 		}
 
 		$sql = $this->_insert(
-			$this->protect_identifiers($this->ar_from[0], TRUE, NULL, FALSE),
-			array_keys($this->ar_set),
-			array_values($this->ar_set)
+			$this->protect_identifiers(
+				$this->qb_from[0], TRUE, NULL, FALSE
+			),
+			array_keys($this->qb_set),
+			array_values($this->qb_set)
 		);
 
 		$this->_reset_write();
@@ -1387,21 +1396,21 @@
 	 */
 	protected function _validate_insert($table = '')
 	{
-		if (count($this->ar_set) === 0)
+		if (count($this->qb_set) === 0)
 		{
 			return ($this->db_debug) ? $this->display_error('db_must_use_set') : FALSE;
 		}
 
 		if ($table == '')
 		{
-			if ( ! isset($this->ar_from[0]))
+			if ( ! isset($this->qb_from[0]))
 			{
 				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
 			}
 		}
 		else
 		{
-			$this->ar_from[0] = $table;
+			$this->qb_from[0] = $table;
 		}
 
 		return TRUE;
@@ -1425,22 +1434,23 @@
 			$this->set($set);
 		}
 
-		if (count($this->ar_set) === 0)
+		if (count($this->qb_set) === 0)
 		{
 			return ($this->db_debug) ? $this->display_error('db_must_use_set') : FALSE;
 		}
 
 		if ($table == '')
 		{
-			if ( ! isset($this->ar_from[0]))
+			if ( ! isset($this->qb_from[0]))
 			{
 				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
 			}
 
-			$table = $this->ar_from[0];
+			$table = $this->qb_from[0];
 		}
 
-		$sql = $this->_replace($this->protect_identifiers($table, TRUE, NULL, FALSE), array_keys($this->ar_set), array_values($this->ar_set));
+		$sql = $this->_replace($this->protect_identifiers($table, TRUE, NULL, FALSE), array_keys($this->qb_set), array_values($this->qb_set));
+
 		$this->_reset_write();
 		return $this->query($sql);
 	}
@@ -1470,7 +1480,7 @@
 	 * Compiles an update query and returns the sql
 	 *
 	 * @param	string	the table to update
-	 * @param	bool	TRUE: reset AR values; FALSE: leave AR values alone
+	 * @param	bool	TRUE: reset QB values; FALSE: leave QB values alone
 	 * @return	string
 	 */
 	public function get_compiled_update($table = '', $reset = TRUE)
@@ -1483,7 +1493,7 @@
 			return FALSE;
 		}
 
-		$sql = $this->_update($this->protect_identifiers($this->ar_from[0], TRUE, NULL, FALSE), $this->ar_set, $this->ar_where, $this->ar_orderby, $this->ar_limit);
+		$sql = $this->_update($this->protect_identifiers($this->qb_from[0], TRUE, NULL, FALSE), $this->qb_set, $this->qb_where, $this->qb_orderby, $this->qb_limit);
 
 		if ($reset === TRUE)
 		{
@@ -1530,7 +1540,8 @@
 			$this->limit($limit);
 		}
 
-		$sql = $this->_update($this->protect_identifiers($this->ar_from[0], TRUE, NULL, FALSE), $this->ar_set, $this->ar_where, $this->ar_orderby, $this->ar_limit, $this->ar_like);
+		$sql = $this->_update($this->protect_identifiers($this->qb_from[0], TRUE, NULL, FALSE), $this->qb_set, $this->qb_where, $this->qb_orderby, $this->qb_limit, $this->qb_like);
+
 		$this->_reset_write();
 		return $this->query($sql);
 	}
@@ -1584,21 +1595,21 @@
 	 */
 	protected function _validate_update($table = '')
 	{
-		if (count($this->ar_set) == 0)
+		if (count($this->qb_set) == 0)
 		{
 			return ($this->db_debug) ? $this->display_error('db_must_use_set') : FALSE;
 		}
 
 		if ($table == '')
 		{
-			if ( ! isset($this->ar_from[0]))
+			if ( ! isset($this->qb_from[0]))
 			{
 				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
 			}
 		}
 		else
 		{
-			$this->ar_from[0] = $table;
+			$this->qb_from[0] = $table;
 		}
 
 		return TRUE;
@@ -1631,25 +1642,25 @@
 			$this->set_update_batch($set, $index);
 		}
 
-		if (count($this->ar_set) === 0)
+		if (count($this->qb_set) === 0)
 		{
 			return ($this->db_debug) ? $this->display_error('db_must_use_set') : FALSE;
 		}
 
 		if ($table == '')
 		{
-			if ( ! isset($this->ar_from[0]))
+			if ( ! isset($this->qb_from[0]))
 			{
 				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
 			}
 
-			$table = $this->ar_from[0];
+			$table = $this->qb_from[0];
 		}
 
 		// Batch this baby
-		for ($i = 0, $total = count($this->ar_set); $i < $total; $i += 100)
+		for ($i = 0, $total = count($this->qb_set); $i < $total; $i += 100)
 		{
-			$this->query($this->_update_batch($this->protect_identifiers($table, TRUE, NULL, FALSE), array_slice($this->ar_set, $i, 100), $this->protect_identifiers($index), $this->ar_where));
+			$this->query($this->_update_batch($this->protect_identifiers($table, TRUE, NULL, FALSE), array_slice($this->qb_set, $i, 100), $this->protect_identifiers($index), $this->qb_where));
 		}
 
 		$this->_reset_write();
@@ -1698,7 +1709,7 @@
 				return $this->display_error('db_batch_missing_index');
 			}
 
-			$this->ar_set[] = $clean;
+			$this->qb_set[] = $clean;
 		}
 
 		return $this;
@@ -1718,12 +1729,12 @@
 	{
 		if ($table == '')
 		{
-			if ( ! isset($this->ar_from[0]))
+			if ( ! isset($this->qb_from[0]))
 			{
 				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
 			}
 
-			$table = $this->ar_from[0];
+			$table = $this->qb_from[0];
 		}
 		else
 		{
@@ -1751,12 +1762,12 @@
 	{
 		if ($table == '')
 		{
-			if ( ! isset($this->ar_from[0]))
+			if ( ! isset($this->qb_from[0]))
 			{
 				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
 			}
 
-			$table = $this->ar_from[0];
+			$table = $this->qb_from[0];
 		}
 		else
 		{
@@ -1794,7 +1805,7 @@
 	 * Compiles a delete query string and returns the sql
 	 *
 	 * @param	string	the table to delete from
-	 * @param	bool	TRUE: reset AR values; FALSE: leave AR values alone
+	 * @param	bool	TRUE: reset QB values; FALSE: leave QB values alone
 	 * @return	string
 	 */
 	public function get_compiled_delete($table = '', $reset = TRUE)
@@ -1825,12 +1836,12 @@
 
 		if ($table == '')
 		{
-			if ( ! isset($this->ar_from[0]))
+			if ( ! isset($this->qb_from[0]))
 			{
 				return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
 			}
 
-			$table = $this->ar_from[0];
+			$table = $this->qb_from[0];
 		}
 		elseif (is_array($table))
 		{
@@ -1857,12 +1868,12 @@
 			$this->limit($limit);
 		}
 
-		if (count($this->ar_where) === 0 && count($this->ar_wherein) === 0 && count($this->ar_like) === 0)
+		if (count($this->qb_where) === 0 && count($this->qb_wherein) === 0 && count($this->qb_like) === 0)
 		{
 			return ($this->db_debug) ? $this->display_error('db_del_must_use_where') : FALSE;
 		}
 
-		$sql = $this->_delete($table, $this->ar_where, $this->ar_like, $this->ar_limit);
+		$sql = $this->_delete($table, $this->qb_where, $this->qb_like, $this->qb_limit);
 		if ($reset_data)
 		{
 			$this->_reset_write();
@@ -1969,9 +1980,9 @@
 			$table = trim(strrchr($table, ' '));
 
 			// Store the alias, if it doesn't already exist
-			if ( ! in_array($table, $this->ar_aliased_tables))
+			if ( ! in_array($table, $this->qb_aliased_tables))
 			{
-				$this->ar_aliased_tables[] = $table;
+				$this->qb_aliased_tables[] = $table;
 			}
 		}
 	}
@@ -1998,9 +2009,9 @@
 		}
 		else
 		{
-			$sql = ( ! $this->ar_distinct) ? 'SELECT ' : 'SELECT DISTINCT ';
+			$sql = ( ! $this->qb_distinct) ? 'SELECT ' : 'SELECT DISTINCT ';
 
-			if (count($this->ar_select) === 0)
+			if (count($this->qb_select) === 0)
 			{
 				$sql .= '*';
 			}
@@ -2009,73 +2020,73 @@
 				// Cycle through the "select" portion of the query and prep each column name.
 				// The reason we protect identifiers here rather then in the select() function
 				// is because until the user calls the from() function we don't know if there are aliases
-				foreach ($this->ar_select as $key => $val)
+				foreach ($this->qb_select as $key => $val)
 				{
-					$no_escape = isset($this->ar_no_escape[$key]) ? $this->ar_no_escape[$key] : NULL;
-					$this->ar_select[$key] = $this->protect_identifiers($val, FALSE, $no_escape);
+					$no_escape = isset($this->qb_no_escape[$key]) ? $this->qb_no_escape[$key] : NULL;
+					$this->qb_select[$key] = $this->protect_identifiers($val, FALSE, $no_escape);
 				}
 
-				$sql .= implode(', ', $this->ar_select);
+				$sql .= implode(', ', $this->qb_select);
 			}
 		}
 
 		// Write the "FROM" portion of the query
-		if (count($this->ar_from) > 0)
+		if (count($this->qb_from) > 0)
 		{
-			$sql .= "\nFROM ".$this->_from_tables($this->ar_from);
+			$sql .= "\nFROM ".$this->_from_tables($this->qb_from);
 		}
 
 		// Write the "JOIN" portion of the query
-		if (count($this->ar_join) > 0)
+		if (count($this->qb_join) > 0)
 		{
-			$sql .= "\n".implode("\n", $this->ar_join);
+			$sql .= "\n".implode("\n", $this->qb_join);
 		}
 
 		// Write the "WHERE" portion of the query
-		if (count($this->ar_where) > 0 OR count($this->ar_like) > 0)
+		if (count($this->qb_where) > 0 OR count($this->qb_like) > 0)
 		{
 			$sql .= "\nWHERE ";
 		}
 
-		$sql .= implode("\n", $this->ar_where);
+		$sql .= implode("\n", $this->qb_where);
 
 		// Write the "LIKE" portion of the query
-		if (count($this->ar_like) > 0)
+		if (count($this->qb_like) > 0)
 		{
-			if (count($this->ar_where) > 0)
+			if (count($this->qb_where) > 0)
 			{
 				$sql .= "\nAND ";
 			}
 
-			$sql .= implode("\n", $this->ar_like);
+			$sql .= implode("\n", $this->qb_like);
 		}
 
 		// Write the "GROUP BY" portion of the query
-		if (count($this->ar_groupby) > 0)
+		if (count($this->qb_groupby) > 0)
 		{
-			$sql .= "\nGROUP BY ".implode(', ', $this->ar_groupby);
+			$sql .= "\nGROUP BY ".implode(', ', $this->qb_groupby);
 		}
 
 		// Write the "HAVING" portion of the query
-		if (count($this->ar_having) > 0)
+		if (count($this->qb_having) > 0)
 		{
-			$sql .= "\nHAVING ".implode("\n", $this->ar_having);
+			$sql .= "\nHAVING ".implode("\n", $this->qb_having);
 		}
 
 		// Write the "ORDER BY" portion of the query
-		if (count($this->ar_orderby) > 0)
+		if (count($this->qb_orderby) > 0)
 		{
-			$sql .= "\nORDER BY ".implode(', ', $this->ar_orderby);
-			if ($this->ar_order !== FALSE)
+			$sql .= "\nORDER BY ".implode(', ', $this->qb_orderby);
+			if ($this->qb_order !== FALSE)
 			{
-				$sql .= ($this->ar_order == 'desc') ? ' DESC' : ' ASC';
+				$sql .= ($this->qb_order == 'desc') ? ' DESC' : ' ASC';
 			}
 		}
 
 		// Write the "LIMIT" portion of the query
-		if (is_numeric($this->ar_limit))
+		if (is_numeric($this->qb_limit))
 		{
-			return $this->_limit($sql."\n", $this->ar_limit, $this->ar_offset);
+			return $this->_limit($sql."\n", $this->qb_limit, $this->qb_offset);
 		}
 
 		return $sql;
@@ -2153,13 +2164,13 @@
 	/**
 	 * Start Cache
 	 *
-	 * Starts AR caching
+	 * Starts QB caching
 	 *
 	 * @return	void
 	 */
 	public function start_cache()
 	{
-		$this->ar_caching = TRUE;
+		$this->qb_caching = TRUE;
 	}
 
 	// --------------------------------------------------------------------
@@ -2167,13 +2178,13 @@
 	/**
 	 * Stop Cache
 	 *
-	 * Stops AR caching
+	 * Stops QB caching
 	 *
 	 * @return	void
 	 */
 	public function stop_cache()
 	{
-		$this->ar_caching = FALSE;
+		$this->qb_caching = FALSE;
 	}
 
 	// --------------------------------------------------------------------
@@ -2181,24 +2192,24 @@
 	/**
 	 * Flush Cache
 	 *
-	 * Empties the AR cache
+	 * Empties the QB cache
 	 *
 	 * @return	void
 	 */
 	public function flush_cache()
 	{
 		$this->_reset_run(array(
-			'ar_cache_select'		=> array(),
-			'ar_cache_from'			=> array(),
-			'ar_cache_join'			=> array(),
-			'ar_cache_where'		=> array(),
-			'ar_cache_like'			=> array(),
-			'ar_cache_groupby'		=> array(),
-			'ar_cache_having'		=> array(),
-			'ar_cache_orderby'		=> array(),
-			'ar_cache_set'			=> array(),
-			'ar_cache_exists'		=> array(),
-			'ar_cache_no_escape'	=> array()
+			'qb_cache_select'		=> array(),
+			'qb_cache_from'			=> array(),
+			'qb_cache_join'			=> array(),
+			'qb_cache_where'		=> array(),
+			'qb_cache_like'			=> array(),
+			'qb_cache_groupby'		=> array(),
+			'qb_cache_having'		=> array(),
+			'qb_cache_orderby'		=> array(),
+			'qb_cache_set'			=> array(),
+			'qb_cache_exists'		=> array(),
+			'qb_cache_no_escape'	=> array()
 		));
 	}
 
@@ -2207,47 +2218,47 @@
 	/**
 	 * Merge Cache
 	 *
-	 * When called, this function merges any cached AR arrays with
+	 * When called, this function merges any cached QB arrays with
 	 * locally called ones.
 	 *
 	 * @return	void
 	 */
 	protected function _merge_cache()
 	{
-		if (count($this->ar_cache_exists) === 0)
+		if (count($this->qb_cache_exists) === 0)
 		{
 			return;
 		}
 
-		foreach ($this->ar_cache_exists as $val)
+		foreach ($this->qb_cache_exists as $val)
 		{
-			$ar_variable	= 'ar_'.$val;
-			$ar_cache_var	= 'ar_cache_'.$val;
+			$qb_variable	= 'qb_'.$val;
+			$qb_cache_var	= 'qb_cache_'.$val;
 
-			if (count($this->$ar_cache_var) === 0)
+			if (count($this->$qb_cache_var) === 0)
 			{
 				continue;
 			}
 
-			$this->$ar_variable = array_unique(array_merge($this->$ar_cache_var, $this->$ar_variable));
+			$this->$qb_variable = array_unique(array_merge($this->$qb_cache_var, $this->$qb_variable));
 		}
 
 		// If we are "protecting identifiers" we need to examine the "from"
 		// portion of the query to determine if there are any aliases
-		if ($this->_protect_identifiers === TRUE && count($this->ar_cache_from) > 0)
+		if ($this->_protect_identifiers === TRUE && count($this->qb_cache_from) > 0)
 		{
-			$this->_track_aliases($this->ar_from);
+			$this->_track_aliases($this->qb_from);
 		}
 
-		$this->ar_no_escape = $this->ar_cache_no_escape;
+		$this->qb_no_escape = $this->qb_cache_no_escape;
 	}
 
 	// --------------------------------------------------------------------
 
 	/**
-	 * Reset Active Record values.
+	 * Reset Query Builder values.
 	 *
-	 * Publicly-visible method to reset the AR values.
+	 * Publicly-visible method to reset the QB values.
 	 *
 	 * @return	void
 	 */
@@ -2260,16 +2271,16 @@
 	// --------------------------------------------------------------------
 
 	/**
-	 * Resets the active record values.  Called by the get() function
+	 * Resets the query builder values.  Called by the get() function
 	 *
 	 * @param	array	An array of fields to reset
 	 * @return	void
 	 */
-	protected function _reset_run($ar_reset_items)
+	protected function _reset_run($qb_reset_items)
 	{
-		foreach ($ar_reset_items as $item => $default_value)
+		foreach ($qb_reset_items as $item => $default_value)
 		{
-			if ( ! in_array($item, $this->ar_store_array))
+			if ( ! in_array($item, $this->qb_store_array))
 			{
 				$this->$item = $default_value;
 			}
@@ -2279,28 +2290,28 @@
 	// --------------------------------------------------------------------
 
 	/**
-	 * Resets the active record values.  Called by the get() function
+	 * Resets the query builder values.  Called by the get() function
 	 *
 	 * @return	void
 	 */
 	protected function _reset_select()
 	{
 		$this->_reset_run(array(
-					'ar_select'		=> array(),
-					'ar_from'		=> array(),
-					'ar_join'		=> array(),
-					'ar_where'		=> array(),
-					'ar_like'		=> array(),
-					'ar_groupby'		=> array(),
-					'ar_having'		=> array(),
-					'ar_orderby'		=> array(),
-					'ar_wherein'		=> array(),
-					'ar_aliased_tables'	=> array(),
-					'ar_no_escape'		=> array(),
-					'ar_distinct'		=> FALSE,
-					'ar_limit'		=> FALSE,
-					'ar_offset'		=> FALSE,
-					'ar_order'		=> FALSE
+					'qb_select'		=> array(),
+					'qb_from'		=> array(),
+					'qb_join'		=> array(),
+					'qb_where'		=> array(),
+					'qb_like'		=> array(),
+					'qb_groupby'		=> array(),
+					'qb_having'		=> array(),
+					'qb_orderby'		=> array(),
+					'qb_wherein'		=> array(),
+					'qb_aliased_tables'	=> array(),
+					'qb_no_escape'		=> array(),
+					'qb_distinct'		=> FALSE,
+					'qb_limit'		=> FALSE,
+					'qb_offset'		=> FALSE,
+					'qb_order'		=> FALSE
 					)
 				);
 	}
@@ -2308,7 +2319,7 @@
 	// --------------------------------------------------------------------
 
 	/**
-	 * Resets the active record "write" values.
+	 * Resets the query builder "write" values.
 	 *
 	 * Called by the insert() update() insert_batch() update_batch() and delete() functions
 	 *
@@ -2317,19 +2328,19 @@
 	protected function _reset_write()
 	{
 		$this->_reset_run(array(
-			'ar_set'	=> array(),
-			'ar_from'	=> array(),
-			'ar_where'	=> array(),
-			'ar_like'	=> array(),
-			'ar_orderby'	=> array(),
-			'ar_keys'	=> array(),
-			'ar_limit'	=> FALSE,
-			'ar_order'	=> FALSE
+			'qb_set'	=> array(),
+			'qb_from'	=> array(),
+			'qb_where'	=> array(),
+			'qb_like'	=> array(),
+			'qb_orderby'	=> array(),
+			'qb_keys'	=> array(),
+			'qb_limit'	=> FALSE,
+			'qb_order'	=> FALSE
 			)
 		);
 	}
 
 }
 
-/* End of file DB_active_rec.php */
-/* Location: ./system/database/DB_active_rec.php */
\ No newline at end of file
+/* End of file DB_query_builder.php */
+/* Location: ./system/database/DB_query_builder.php */
\ No newline at end of file
diff --git a/system/database/drivers/cubrid/cubrid_driver.php b/system/database/drivers/cubrid/cubrid_driver.php
index 7a5c048..1373faa 100644
--- a/system/database/drivers/cubrid/cubrid_driver.php
+++ b/system/database/drivers/cubrid/cubrid_driver.php
@@ -21,7 +21,7 @@
  * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
- * @since		Version 2.0.2
+ * @since		Version 2.1
  * @filesource
  */
 
@@ -29,7 +29,7 @@
  * CUBRID Database Adapter Class
  *
  * Note: _DB is an extender class that the app controller
- * creates dynamically based on whether the active record
+ * creates dynamically based on whether the query builder
  * class is being used or not.
  *
  * @package		CodeIgniter
@@ -43,7 +43,7 @@
 	public $dbdriver = 'cubrid';
 
 	// The character used for escaping - no need in CUBRID
-	protected $_escape_char = '';
+	protected $_escape_char = '`';
 
 	// clause and character used for LIKE escape sequences - not used in CUBRID
 	protected $_like_escape_str = '';
@@ -192,13 +192,8 @@
 	 */
 	public function trans_begin($test_mode = FALSE)
 	{
-		if ( ! $this->trans_enabled)
-		{
-			return TRUE;
-		}
-
 		// When transactions are nested we only begin/commit/rollback the outermost ones
-		if ($this->_trans_depth > 0)
+		if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
 		{
 			return TRUE;
 		}
@@ -206,7 +201,7 @@
 		// Reset the transaction failure flag.
 		// If the $test_mode flag is set to TRUE transactions will be rolled back
 		// even if the queries produce a successful result.
-		$this->_trans_failure = ($test_mode === TRUE) ? TRUE : FALSE;
+		$this->_trans_failure = ($test_mode === TRUE);
 
 		if (cubrid_get_autocommit($this->conn_id))
 		{
@@ -225,13 +220,8 @@
 	 */
 	public function trans_commit()
 	{
-		if ( ! $this->trans_enabled)
-		{
-			return TRUE;
-		}
-
 		// When transactions are nested we only begin/commit/rollback the outermost ones
-		if ($this->_trans_depth > 0)
+		if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
 		{
 			return TRUE;
 		}
@@ -255,13 +245,8 @@
 	 */
 	public function trans_rollback()
 	{
-		if ( ! $this->trans_enabled)
-		{
-			return TRUE;
-		}
-
 		// When transactions are nested we only begin/commit/rollback the outermost ones
-		if ($this->_trans_depth > 0)
+		if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
 		{
 			return TRUE;
 		}
@@ -297,7 +282,9 @@
 			return $str;
 		}
 
-		if (function_exists('cubrid_real_escape_string') AND is_resource($this->conn_id))
+		if (function_exists('cubrid_real_escape_string') &&
+			(is_resource($this->conn_id)
+				OR (get_resource_type($this->conn_id) === 'Unknown' && preg_match('/Resource id #/', strval($this->conn_id)))))
 		{
 			$str = cubrid_real_escape_string($str, $this->conn_id);
 		}
@@ -309,7 +296,7 @@
 		// escape LIKE condition wildcards
 		if ($like === TRUE)
 		{
-			$str = str_replace(array('%', '_'), array('\\%', '\\_'), $str);
+			return str_replace(array('%', '_'), array('\\%', '\\_'), $str);
 		}
 
 		return $str;
@@ -363,9 +350,9 @@
 			return 0;
 		}
 
-		$row = $query->row();
+		$query = $query->row();
 		$this->_reset_select();
-		return (int) $row->numrows;
+		return (int) $query->numrows;
 	}
 
 	// --------------------------------------------------------------------
@@ -380,11 +367,11 @@
 	 */
 	protected function _list_tables($prefix_limit = FALSE)
 	{
-		$sql = "SHOW TABLES";
+		$sql = 'SHOW TABLES';
 
-		if ($prefix_limit !== FALSE AND $this->dbprefix != '')
+		if ($prefix_limit !== FALSE && $this->dbprefix != '')
 		{
-			$sql .= " LIKE '".$this->escape_like_str($this->dbprefix)."%'";
+			return $sql." LIKE '".$this->escape_like_str($this->dbprefix)."%'";
 		}
 
 		return $sql;
@@ -417,7 +404,7 @@
 	 */
 	protected function _field_data($table)
 	{
-		return "SELECT * FROM ".$table." LIMIT 1";
+		return 'SELECT * FROM '.$table.' LIMIT 1';
 	}
 
 	// --------------------------------------------------------------------
@@ -471,8 +458,6 @@
 	protected function _update_batch($table, $values, $index, $where = NULL)
 	{
 		$ids = array();
-		$where = ($where != '' AND count($where) >=1) ? implode(" ", $where).' AND ' : '';
-
 		foreach ($values as $key => $val)
 		{
 			$ids[] = $val[$index];
@@ -486,29 +471,21 @@
 			}
 		}
 
-		$sql = "UPDATE ".$table." SET ";
 		$cases = '';
-
 		foreach ($final as $k => $v)
 		{
-			$cases .= $k.' = CASE '."\n";
-			foreach ($v as $row)
-			{
-				$cases .= $row."\n";
-			}
-
-			$cases .= 'ELSE '.$k.' END, ';
+			$cases .= $k." = CASE \n"
+				.implode("\n", $v)
+				.'ELSE '.$k.' END, ';
 		}
 
-		$sql .= substr($cases, 0, -2);
-
-		$sql .= ' WHERE '.$where.$index.' IN ('.implode(',', $ids).')';
-
-		return $sql;
+		return 'UPDATE '.$table.' SET '.substr($cases, 0, -2)
+			.' WHERE '.(($where != '' && count($where) > 0) ? implode(' ', $where).' AND ' : '')
+			.$index.' IN ('.implode(',', $ids).')';
 	}
 
 	// --------------------------------------------------------------------
-
+	
 	/**
 	 * Limit string
 	 *
@@ -521,16 +498,7 @@
 	 */
 	protected function _limit($sql, $limit, $offset)
 	{
-		if ($offset == 0)
-		{
-			$offset = '';
-		}
-		else
-		{
-			$offset .= ", ";
-		}
-
-		return $sql."LIMIT ".$offset.$limit;
+		return $sql.'LIMIT '.($offset == 0 ? '' : $offset.', ').$limit;
 	}
 
 	// --------------------------------------------------------------------
@@ -549,4 +517,4 @@
 }
 
 /* End of file cubrid_driver.php */
-/* Location: ./system/database/drivers/cubrid/cubrid_driver.php */
\ No newline at end of file
+/* Location: ./system/database/drivers/cubrid/cubrid_driver.php */
diff --git a/system/database/drivers/cubrid/cubrid_forge.php b/system/database/drivers/cubrid/cubrid_forge.php
index 16478ee..4e66f81 100644
--- a/system/database/drivers/cubrid/cubrid_forge.php
+++ b/system/database/drivers/cubrid/cubrid_forge.php
@@ -21,7 +21,7 @@
  * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
- * @since		Version 1.0
+ * @since		Version 2.1
  * @filesource
  */
 
@@ -55,24 +55,19 @@
 			// entered the field information, so we'll simply add it to the list
 			if (is_numeric($field))
 			{
-				$sql .= "\n\t$attributes";
+				$sql .= "\n\t".$attributes;
 			}
 			else
 			{
 				$attributes = array_change_key_case($attributes, CASE_UPPER);
+				$sql .= "\n\t".$this->db->protect_identifiers($field)
+					.( ! empty($attributes['NAME']) ? ' '.$this->db->protect_identifiers($attributes['NAME']).' ' : '');
 
-				$sql .= "\n\t\"".$this->db->protect_identifiers($field).'"';
-
-				if (array_key_exists('NAME', $attributes))
-				{
-					$sql .= ' '.$this->db->protect_identifiers($attributes['NAME']).' ';
-				}
-
-				if (array_key_exists('TYPE', $attributes))
+				if ( ! empty($attributes['TYPE']))
 				{
 					$sql .= ' '.$attributes['TYPE'];
 
-					if (array_key_exists('CONSTRAINT', $attributes))
+					if ( ! empty($attributes['CONSTRAINT']))
 					{
 						switch ($attributes['TYPE'])
 						{
@@ -81,9 +76,10 @@
 							case 'numeric':
 								$sql .= '('.implode(',', $attributes['CONSTRAINT']).')';
 								break;
-							case 'enum': 	// As of version 8.4.0 CUBRID does not support
-											// enum data type.
-											break;
+							case 'enum':
+								// Will be supported in the future as part a part of
+								// MySQL compatibility features.
+								break;
 							case 'set':
 								$sql .= '("'.implode('","', $attributes['CONSTRAINT']).'")';
 								break;
@@ -93,36 +89,19 @@
 					}
 				}
 
-				if (array_key_exists('UNSIGNED', $attributes) && $attributes['UNSIGNED'] === TRUE)
+			/* As of version 8.4.1 CUBRID does not support UNSIGNED INTEGER data type.
+			 * Will be supported in the next release as a part of MySQL Compatibility.
+			 *
+				if (isset($attributes['UNSIGNED']) && $attributes['UNSIGNED'] === TRUE)
 				{
-					//$sql .= ' UNSIGNED';
-					// As of version 8.4.0 CUBRID does not support UNSIGNED INTEGER data type.
-					// Will be supported in the next release as a part of MySQL Compatibility.
+					$sql .= ' UNSIGNED';
 				}
+			 */
 
-				if (array_key_exists('DEFAULT', $attributes))
-				{
-					$sql .= ' DEFAULT \''.$attributes['DEFAULT'].'\'';
-				}
-
-				if (array_key_exists('NULL', $attributes) && $attributes['NULL'] === TRUE)
-				{
-					$sql .= ' NULL';
-				}
-				else
-				{
-					$sql .= ' NOT NULL';
-				}
-
-				if (array_key_exists('AUTO_INCREMENT', $attributes) && $attributes['AUTO_INCREMENT'] === TRUE)
-				{
-					$sql .= ' AUTO_INCREMENT';
-				}
-
-				if (array_key_exists('UNIQUE', $attributes) && $attributes['UNIQUE'] === TRUE)
-				{
-					$sql .= ' UNIQUE';
-				}
+				$sql .= (isset($attributes['DEFAULT']) ? " DEFAULT '".$attributes['DEFAULT']."'" : '')
+					.(( ! empty($attributes['NULL']) && $attributes['NULL'] === TRUE) ? ' NULL' : ' NOT NULL')
+					.(( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE) ? ' AUTO_INCREMENT' : '')
+					.(( ! empty($attributes['UNIQUE']) && $attributes['UNIQUE'] === TRUE) ? ' UNIQUE' : '');
 			}
 
 			// don't add a comma on the end of the last field
@@ -151,21 +130,20 @@
 	{
 		$sql = 'CREATE TABLE ';
 
+		/* As of version 8.4.1 CUBRID does not support this SQL syntax.
 		if ($if_not_exists === TRUE)
 		{
-			//$sql .= 'IF NOT EXISTS ';
-			// As of version 8.4.0 CUBRID does not support this SQL syntax.
+			$sql .= 'IF NOT EXISTS ';
 		}
+		*/
 
 		$sql .= $this->db->escape_identifiers($table).' ('.$this->_process_fields($fields);
 
 		// If there is a PK defined
 		if (count($primary_keys) > 0)
 		{
-			$key_name = 'pk_'.$table.'_'.$this->db->protect_identifiers(implode('_', $primary_keys));
-
-			$primary_keys = $this->db->protect_identifiers($primary_keys);
-			$sql .= ",\n\tCONSTRAINT " . $key_name . " PRIMARY KEY(" . implode(', ', $primary_keys) . ")";
+			$key_name = $this->db->protect_identifiers('pk_'.$table.'_'.implode('_', $primary_keys));
+			$sql .= ",\n\tCONSTRAINT ".$key_name.' PRIMARY KEY('.implode(', ', $this->db->protect_identifiers($primary_keys)).')';
 		}
 
 		if (is_array($keys) && count($keys) > 0)
@@ -174,22 +152,20 @@
 			{
 				if (is_array($key))
 				{
-					$key_name = $this->db->protect_identifiers(implode('_', $key));
+					$key_name = $this->db->protect_identifiers('idx_'.$table.implode('_', $key));
 					$key = $this->db->protect_identifiers($key);
 				}
 				else
 				{
-					$key_name = $this->db->protect_identifiers($key);
+					$key_name = $this->db->protect_identifiers('idx_'.$table.$key);
 					$key = array($key_name);
 				}
 
-				$sql .= ",\n\tKEY \"{$key_name}\" (" . implode(', ', $key) . ")";
+				$sql .= ",\n\tKEY ".$key_name.' ('.implode(', ', $key).')';
 			}
 		}
 
-		$sql .= "\n);";
-
-		return $sql;
+		return $sql."\n);";
 	}
 
 	// --------------------------------------------------------------------
@@ -211,19 +187,13 @@
 		$sql = 'ALTER TABLE '.$this->db->protect_identifiers($table).' '.$alter_type.' ';
 
 		// DROP has everything it needs now.
-		if ($alter_type == 'DROP')
+		if ($alter_type === 'DROP')
 		{
 			return $sql.$this->db->protect_identifiers($fields);
 		}
 
-		$sql .= $this->_process_fields($fields);
-
-		if ($after_field != '')
-		{
-			return $sql.' AFTER '.$this->db->protect_identifiers($after_field);
-		}
-
-		return $sql;
+		return $sql.$this->_process_fields($fields)
+			.($after_field != '' ? ' AFTER '.$this->db->protect_identifiers($after_field) : '');
 	}
 
 }
diff --git a/system/database/drivers/cubrid/cubrid_result.php b/system/database/drivers/cubrid/cubrid_result.php
index 58dcff2..3eb9f7e 100644
--- a/system/database/drivers/cubrid/cubrid_result.php
+++ b/system/database/drivers/cubrid/cubrid_result.php
@@ -21,7 +21,7 @@
  * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
- * @since		Version 2.0.2
+ * @since		Version 2.1
  * @filesource
  */
 
@@ -84,53 +84,20 @@
 	public function field_data()
 	{
 		$retval = array();
-
-		$tablePrimaryKeys = array();
+		$i = 0;
 
 		while ($field = cubrid_fetch_field($this->result_id))
 		{
-			$F				= new stdClass();
-			$F->name		= $field->name;
-			$F->type		= $field->type;
-			$F->default		= $field->def;
-			$F->max_length	= $field->max_length;
-
-			// At this moment primary_key property is not returned when
-			// cubrid_fetch_field is called. The following code will
-			// provide a patch for it. primary_key property will be added
-			// in the next release.
-
-			// TODO: later version of CUBRID will provide primary_key
-			// property.
-			// When PK is defined in CUBRID, an index is automatically
-			// created in the db_index system table in the form of
-			// pk_tblname_fieldname. So the following will count how many
-			// columns are there which satisfy this format.
-			// The query will search for exact single columns, thus
-			// compound PK is not supported.
-			$res = cubrid_query($this->conn_id,
-				"SELECT COUNT(*) FROM db_index WHERE class_name = '" . $field->table .
-				"' AND is_primary_key = 'YES' AND index_name = 'pk_" .
-				$field->table . "_" . $field->name . "'"
-			);
-
-			if ($res)
-			{
-				$row = cubrid_fetch_array($res, CUBRID_NUM);
-				$F->primary_key = ($row[0] > 0 ? 1 : null);
-			}
-			else
-			{
-				$F->primary_key = null;
-			}
-
-			if (is_resource($res))
-			{
-				cubrid_close_request($res);
-				$this->result_id = FALSE;
-			}
-
-			$retval[] = $F;
+			$retval[$i]			= new stdClass();
+			$retval[$i]->name		= $field->name;
+			// CUBRID returns type as e.g. varchar(100),
+			// so we need to remove all digits and brackets.
+			$retval[$i]->type		= preg_replace('/[\d()]/', '', $field->type);
+			$retval[$i]->default		= $field->def;
+			// Use CUBRID's native API to obtain column's max_length,
+			// otherwise $field->max_length has incorrect info
+			$retval[$i]->max_length		= cubrid_field_len($this->result_id, $i);
+			$retval[$i++]->primary_key	= $field->primary_key;
 		}
 
 		return $retval;
@@ -145,9 +112,8 @@
 	 */
 	public function free_result()
 	{
-		if(is_resource($this->result_id) ||
-			get_resource_type($this->result_id) == "Unknown" &&
-			preg_match('/Resource id #/', strval($this->result_id)))
+		if (is_resource($this->result_id) OR
+			(get_resource_type($this->result_id) === 'Unknown' && preg_match('/Resource id #/', strval($this->result_id))))
 		{
 			cubrid_close_request($this->result_id);
 			$this->result_id = FALSE;
diff --git a/system/database/drivers/cubrid/cubrid_utility.php b/system/database/drivers/cubrid/cubrid_utility.php
index 274ff6a..c8cee99 100644
--- a/system/database/drivers/cubrid/cubrid_utility.php
+++ b/system/database/drivers/cubrid/cubrid_utility.php
@@ -21,7 +21,7 @@
  * @copyright	Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/)
  * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
  * @link		http://codeigniter.com
- * @since		Version 1.0
+ * @since		Version 2.1
  * @filesource
  */
 
diff --git a/system/database/drivers/interbase/interbase_driver.php b/system/database/drivers/interbase/interbase_driver.php
index 6587d72..1b18de8 100644
--- a/system/database/drivers/interbase/interbase_driver.php
+++ b/system/database/drivers/interbase/interbase_driver.php
@@ -29,7 +29,7 @@
  * Firebird/Interbase Database Adapter Class
  *
  * Note: _DB is an extender class that the app controller
- * creates dynamically based on whether the active record
+ * creates dynamically based on whether the query builder
  * class is being used or not.
  *
  * @package		CodeIgniter
diff --git a/system/database/drivers/interbase/interbase_utility.php b/system/database/drivers/interbase/interbase_utility.php
index 1b92af9..1642118 100644
--- a/system/database/drivers/interbase/interbase_utility.php
+++ b/system/database/drivers/interbase/interbase_utility.php
@@ -42,7 +42,7 @@
 	 * @param	string	$filename
 	 * @return	mixed
 	 */
-	protected function backup($filename)
+	protected function _backup($filename)
 	{
 		if ($service = ibase_service_attach($this->db->hostname, $this->db->username, $this->db->password))
 		{
diff --git a/system/database/drivers/mssql/mssql_driver.php b/system/database/drivers/mssql/mssql_driver.php
index 90609a8..f60ec81 100644
--- a/system/database/drivers/mssql/mssql_driver.php
+++ b/system/database/drivers/mssql/mssql_driver.php
@@ -29,7 +29,7 @@
  * MS SQL Database Adapter Class
  *
  * Note: _DB is an extender class that the app controller
- * creates dynamically based on whether the active record
+ * creates dynamically based on whether the query builder
  * class is being used or not.
  *
  * @package		CodeIgniter
@@ -534,4 +534,4 @@
 }
 
 /* End of file mssql_driver.php */
-/* Location: ./system/database/drivers/mssql/mssql_driver.php */
\ No newline at end of file
+/* Location: ./system/database/drivers/mssql/mssql_driver.php */
diff --git a/system/database/drivers/mysql/mysql_driver.php b/system/database/drivers/mysql/mysql_driver.php
index c2fccc1..32c5186 100644
--- a/system/database/drivers/mysql/mysql_driver.php
+++ b/system/database/drivers/mysql/mysql_driver.php
@@ -29,7 +29,7 @@
  * MySQL Database Adapter Class
  *
  * Note: _DB is an extender class that the app controller
- * creates dynamically based on whether the active record
+ * creates dynamically based on whether the query builder
  * class is being used or not.
  *
  * @package		CodeIgniter
@@ -531,4 +531,4 @@
 }
 
 /* End of file mysql_driver.php */
-/* Location: ./system/database/drivers/mysql/mysql_driver.php */
\ No newline at end of file
+/* Location: ./system/database/drivers/mysql/mysql_driver.php */
diff --git a/system/database/drivers/mysqli/mysqli_driver.php b/system/database/drivers/mysqli/mysqli_driver.php
index a690682..e2684e4 100644
--- a/system/database/drivers/mysqli/mysqli_driver.php
+++ b/system/database/drivers/mysqli/mysqli_driver.php
@@ -29,7 +29,7 @@
  * MySQLi Database Adapter Class
  *
  * Note: _DB is an extender class that the app controller
- * creates dynamically based on whether the active record
+ * creates dynamically based on whether the query builder
  * class is being used or not.
  *
  * @package		CodeIgniter
@@ -535,4 +535,4 @@
 }
 
 /* End of file mysqli_driver.php */
-/* Location: ./system/database/drivers/mysqli/mysqli_driver.php */
\ No newline at end of file
+/* Location: ./system/database/drivers/mysqli/mysqli_driver.php */
diff --git a/system/database/drivers/oci8/oci8_driver.php b/system/database/drivers/oci8/oci8_driver.php
index 1b66178..33a89df 100644
--- a/system/database/drivers/oci8/oci8_driver.php
+++ b/system/database/drivers/oci8/oci8_driver.php
@@ -29,7 +29,7 @@
  * oci8 Database Adapter Class
  *
  * Note: _DB is an extender class that the app controller
- * creates dynamically based on whether the active record
+ * creates dynamically based on whether the query builder
  * class is being used or not.
  *
  * @package		CodeIgniter
@@ -682,4 +682,4 @@
 }
 
 /* End of file oci8_driver.php */
-/* Location: ./system/database/drivers/oci8/oci8_driver.php */
\ No newline at end of file
+/* Location: ./system/database/drivers/oci8/oci8_driver.php */
diff --git a/system/database/drivers/odbc/odbc_driver.php b/system/database/drivers/odbc/odbc_driver.php
index 38416cf..e36f2d2 100644
--- a/system/database/drivers/odbc/odbc_driver.php
+++ b/system/database/drivers/odbc/odbc_driver.php
@@ -29,7 +29,7 @@
  * ODBC Database Adapter Class
  *
  * Note: _DB is an extender class that the app controller
- * creates dynamically based on whether the active record
+ * creates dynamically based on whether the query builder
  * class is being used or not.
  *
  * @package		CodeIgniter
@@ -413,4 +413,4 @@
 }
 
 /* End of file odbc_driver.php */
-/* Location: ./system/database/drivers/odbc/odbc_driver.php */
\ No newline at end of file
+/* Location: ./system/database/drivers/odbc/odbc_driver.php */
diff --git a/system/database/drivers/pdo/pdo_driver.php b/system/database/drivers/pdo/pdo_driver.php
index 60151b9..89e6967 100644
--- a/system/database/drivers/pdo/pdo_driver.php
+++ b/system/database/drivers/pdo/pdo_driver.php
@@ -29,7 +29,7 @@
  * PDO Database Adapter Class
  *
  * Note: _DB is an extender class that the app controller
- * creates dynamically based on whether the active record
+ * creates dynamically based on whether the query builder
  * class is being used or not.
  *
  * @package		CodeIgniter
@@ -225,7 +225,7 @@
 		 *
 		 * Reference: http://www.php.net/manual/en/ref.pdo-mysql.connection.php
 		 */
-		if ($this->subdriver === 'mysql' && ! is_php('5.3.6') && ! empty($this->char_set))
+		if ($this->pdodriver === 'mysql' && ! is_php('5.3.6') && ! empty($this->char_set))
 		{
 			$this->options[PDO::MYSQL_ATTR_INIT_COMMAND] = 'SET NAMES '.$this->char_set
 					.( ! empty($this->db_collat) ? " COLLATE '".$this->dbcollat."'" : '');
@@ -683,4 +683,4 @@
 }
 
 /* End of file pdo_driver.php */
-/* Location: ./system/database/drivers/pdo/pdo_driver.php */
\ No newline at end of file
+/* Location: ./system/database/drivers/pdo/pdo_driver.php */
diff --git a/system/database/drivers/postgre/postgre_driver.php b/system/database/drivers/postgre/postgre_driver.php
index 14259be..84bf768 100644
--- a/system/database/drivers/postgre/postgre_driver.php
+++ b/system/database/drivers/postgre/postgre_driver.php
@@ -29,7 +29,7 @@
  * Postgre Database Adapter Class
  *
  * Note: _DB is an extender class that the app controller
- * creates dynamically based on whether the active record
+ * creates dynamically based on whether the query builder
  * class is being used or not.
  *
  * @package		CodeIgniter
@@ -164,8 +164,8 @@
 	/**
 	 * Set client character set
 	 *
-	 * @param       string
-	 * @return      bool
+	 * @param	string
+	 * @return	bool
 	 */
 	protected function _db_set_charset($charset)
 	{
@@ -219,6 +219,7 @@
 	/**
 	 * Begin Transaction
 	 *
+	 * @param	bool
 	 * @return	bool
 	 */
 	public function trans_begin($test_mode = FALSE)
@@ -234,7 +235,7 @@
 		// even if the queries produce a successful result.
 		$this->_trans_failure = ($test_mode === TRUE);
 
-		return @pg_query($this->conn_id, 'BEGIN');
+		return (bool) @pg_query($this->conn_id, 'BEGIN');
 	}
 
 	// --------------------------------------------------------------------
@@ -252,7 +253,7 @@
 			return TRUE;
 		}
 
-		return @pg_query($this->conn_id, 'COMMIT');
+		return (bool) @pg_query($this->conn_id, 'COMMIT');
 	}
 
 	// --------------------------------------------------------------------
@@ -270,7 +271,7 @@
 			return TRUE;
 		}
 
-		return @pg_query($this->conn_id, 'ROLLBACK');
+		return (bool) @pg_query($this->conn_id, 'ROLLBACK');
 	}
 
 	// --------------------------------------------------------------------
@@ -328,34 +329,41 @@
 	 */
 	public function insert_id()
 	{
-		$v = $this->version();
+		$v = pg_version($this->conn_id);
+		$v = isset($v['server']) ? $v['server'] : 0; // 'server' key is only available since PosgreSQL 7.4
 
-		$table	= func_num_args() > 0 ? func_get_arg(0) : NULL;
-		$column	= func_num_args() > 1 ? func_get_arg(1) : NULL;
+		$table	= (func_num_args() > 0) ? func_get_arg(0) : NULL;
+		$column	= (func_num_args() > 1) ? func_get_arg(1) : NULL;
 
 		if ($table == NULL && $v >= '8.1')
 		{
-			$sql='SELECT LASTVAL() as ins_id';
-		}
-		elseif ($table != NULL && $column != NULL && $v >= '8.0')
-		{
-			$sql = sprintf("SELECT pg_get_serial_sequence('%s','%s') as seq", $table, $column);
-			$query = $this->query($sql);
-			$row = $query->row();
-			$sql = sprintf("SELECT CURRVAL('%s') as ins_id", $row->seq);
+			$sql = 'SELECT LASTVAL() AS ins_id';
 		}
 		elseif ($table != NULL)
 		{
-			// seq_name passed in table parameter
-			$sql = sprintf("SELECT CURRVAL('%s') as ins_id", $table);
+			if ($column != NULL && $v >= '8.0')
+			{
+				$sql = 'SELECT pg_get_serial_sequence(\''.$table."', '".$column."') AS seq";
+				$query = $this->query($sql);
+				$query = $query->row();
+				$seq = $query->seq;
+			}
+			else
+			{
+				// seq_name passed in table parameter
+				$seq = $table;
+			}
+
+			$sql = 'SELECT CURRVAL(\''.$seq."') AS ins_id";
 		}
 		else
 		{
 			return pg_last_oid($this->result_id);
 		}
+
 		$query = $this->query($sql);
-		$row = $query->row();
-		return $row->ins_id;
+		$query = $query->row();
+		return (int) $query->ins_id;
 	}
 
 	// --------------------------------------------------------------------
@@ -382,9 +390,9 @@
 			return 0;
 		}
 
-		$row = $query->row();
+		$query = $query->row();
 		$this->_reset_select();
-		return (int) $row->numrows;
+		return (int) $query->numrows;
 	}
 
 	// --------------------------------------------------------------------
@@ -401,9 +409,9 @@
 	{
 		$sql = "SELECT table_name FROM information_schema.tables WHERE table_schema = 'public'";
 
-		if ($prefix_limit !== FALSE AND $this->dbprefix != '')
+		if ($prefix_limit !== FALSE && $this->dbprefix != '')
 		{
-			$sql .= " AND table_name LIKE '".$this->escape_like_str($this->dbprefix)."%' ".sprintf($this->_like_escape_str, $this->_like_escape_chr);
+			return $sql." AND table_name LIKE '".$this->escape_like_str($this->dbprefix)."%' ".sprintf($this->_like_escape_str, $this->_like_escape_chr);
 		}
 
 		return $sql;
@@ -421,7 +429,7 @@
 	 */
 	protected function _list_columns($table = '')
 	{
-		return "SELECT column_name FROM information_schema.columns WHERE table_name ='".$table."'";
+		return "SELECT column_name FROM information_schema.columns WHERE table_name = '".$table."'";
 	}
 
 	// --------------------------------------------------------------------
@@ -432,11 +440,11 @@
 	 * Generates a platform-specific query so that the column data can be retrieved
 	 *
 	 * @param	string	the table name
-	 * @return	object
+	 * @return	string
 	 */
 	protected function _field_data($table)
 	{
-		return "SELECT * FROM ".$table." LIMIT 1";
+		return 'SELECT * FROM '.$table.' LIMIT 1';
 	}
 
 	// --------------------------------------------------------------------
@@ -531,6 +539,7 @@
 	}
 
 	// --------------------------------------------------------------------
+
 	/**
 	 * Limit string
 	 *
@@ -543,14 +552,7 @@
 	 */
 	protected function _limit($sql, $limit, $offset)
 	{
-		$sql .= "LIMIT ".$limit;
-
-		if ($offset > 0)
-		{
-			$sql .= " OFFSET ".$offset;
-		}
-
-		return $sql;
+		return $sql.' LIMIT '.$limit.($offset == 0 ? '' : ' OFFSET '.$offset);
 	}
 
 	// --------------------------------------------------------------------
@@ -569,4 +571,4 @@
 }
 
 /* End of file postgre_driver.php */
-/* Location: ./system/database/drivers/postgre/postgre_driver.php */
\ No newline at end of file
+/* Location: ./system/database/drivers/postgre/postgre_driver.php */
diff --git a/system/database/drivers/postgre/postgre_forge.php b/system/database/drivers/postgre/postgre_forge.php
index 8b214eb..94c97af 100644
--- a/system/database/drivers/postgre/postgre_forge.php
+++ b/system/database/drivers/postgre/postgre_forge.php
@@ -42,7 +42,7 @@
 	 * @param	mixed	the fields
 	 * @return	string
 	 */
-	protected function _process_fields($fields, $primary_keys=array())
+	protected function _process_fields($fields, $primary_keys = array())
 	{
 		$sql = '';
 		$current_field_count = 0;
@@ -54,15 +54,14 @@
 			// entered the field information, so we'll simply add it to the list
 			if (is_numeric($field))
 			{
-				$sql .= "\n\t$attributes";
+				$sql .= "\n\t".$attributes;
 			}
 			else
 			{
-				$attributes = array_change_key_case($attributes, CASE_UPPER);
-
 				$sql .= "\n\t".$this->db->protect_identifiers($field);
 
-				$is_unsigned = (array_key_exists('UNSIGNED', $attributes) && $attributes['UNSIGNED'] === TRUE);
+				$attributes = array_change_key_case($attributes, CASE_UPPER);
+				$is_unsigned = ( ! empty($attributes['UNSIGNED']) && $attributes['UNSIGNED'] === TRUE);
 
 				// Convert datatypes to be PostgreSQL-compatible
 				switch (strtoupper($attributes['TYPE']))
@@ -94,44 +93,24 @@
 					case 'BLOB':
 						$attributes['TYPE'] = 'BYTEA';
 						break;
+					default:
+						break;
 				}
 
 				// If this is an auto-incrementing primary key, use the serial data type instead
-				if (in_array($field, $primary_keys) && array_key_exists('AUTO_INCREMENT', $attributes) 
-					&& $attributes['AUTO_INCREMENT'] === TRUE)
-				{
-					$sql .= ' SERIAL';
-				}
-				else
-				{
-					$sql .=  ' '.$attributes['TYPE'];
-				}
+				$sql .= (in_array($field, $primary_keys) && ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE)
+					? ' SERIAL' : ' '.$attributes['TYPE'];
 
 				// Modified to prevent constraints with integer data types
-				if (array_key_exists('CONSTRAINT', $attributes) && strpos($attributes['TYPE'], 'INT') === false)
+				if ( ! empty($attributes['CONSTRAINT']) && strpos($attributes['TYPE'], 'INT') === FALSE)
 				{
 					$sql .= '('.$attributes['CONSTRAINT'].')';
 				}
 
-				if (array_key_exists('DEFAULT', $attributes))
-				{
-					$sql .= ' DEFAULT \''.$attributes['DEFAULT'].'\'';
-				}
-
-				if (array_key_exists('NULL', $attributes) && $attributes['NULL'] === TRUE)
-				{
-					$sql .= ' NULL';
-				}
-				else
-				{
-					$sql .= ' NOT NULL';
-				}
-
-				// Added new attribute to create unqite fields. Also works with MySQL
-				if (array_key_exists('UNIQUE', $attributes) && $attributes['UNIQUE'] === TRUE)
-				{
-					$sql .= ' UNIQUE';
-				}
+				$sql .= (isset($attributes['DEFAULT']) ? " DEFAULT '".$attributes['DEFAULT']."'" : '')
+					.(( ! empty($attributes['NULL']) && $attributes['NULL'] === TRUE) ? ' NULL' : ' NOT NULL')
+					// Added new attribute to create unqite fields. Also works with MySQL
+					.(( ! empty($attributes['UNIQUE']) && $attributes['UNIQUE'] === TRUE) ? ' UNIQUE' : '');
 			}
 
 			// don't add a comma on the end of the last field
@@ -179,7 +158,7 @@
 				$primary_keys[$index] = $this->db->protect_identifiers($key);
 			}
 
-			$sql .= ",\n\tPRIMARY KEY (" . implode(', ', $primary_keys) . ")";
+			$sql .= ",\n\tPRIMARY KEY (".implode(', ', $primary_keys).')';
 		}
 
 		$sql .= "\n);";
@@ -199,7 +178,7 @@
 
 				foreach ($key as $field)
 				{
-					$sql .= "CREATE INDEX " . $table . "_" . str_replace(array('"', "'"), '', $field) . "_index ON $table ($field); ";
+					$sql .= 'CREATE INDEX '.$table.'_'.str_replace(array('"', "'"), '', $field).'_index ON '.$table.' ('.$field.'); ';
 				}
 			}
 		}
@@ -220,7 +199,7 @@
 	 * @param	string	the table name
 	 * @param	string	the column definition
 	 * @param	string	the default value
-	 * @param	boolean	should 'NOT NULL' be added
+	 * @param	bool	should 'NOT NULL' be added
 	 * @param	string	the field after which we should add the new field
 	 * @return	string
 	 */
@@ -229,19 +208,13 @@
  		$sql = 'ALTER TABLE '.$this->db->protect_identifiers($table).' '.$alter_type.' ';
 
  		// DROP has everything it needs now.
- 		if ($alter_type == 'DROP')
+ 		if ($alter_type === 'DROP')
  		{
  			return $sql.$this->db->protect_identifiers($fields);
  		}
 
- 		$sql .= $this->_process_fields($fields);
-
- 		if ($after_field != '')
- 		{
- 			return $sql.' AFTER '.$this->db->protect_identifiers($after_field);
- 		}
-
- 		return $sql;
+ 		return $sql.$this->_process_fields($fields)
+			.($after_field != '' ? ' AFTER '.$this->db->protect_identifiers($after_field) : '');
  	}
 
 }
diff --git a/system/database/drivers/sqlite/sqlite_driver.php b/system/database/drivers/sqlite/sqlite_driver.php
index 5021deb..551704f 100644
--- a/system/database/drivers/sqlite/sqlite_driver.php
+++ b/system/database/drivers/sqlite/sqlite_driver.php
@@ -29,7 +29,7 @@
  * SQLite Database Adapter Class
  *
  * Note: _DB is an extender class that the app controller
- * creates dynamically based on whether the active record
+ * creates dynamically based on whether the query builder
  * class is being used or not.
  *
  * @package		CodeIgniter
@@ -461,4 +461,4 @@
 }
 
 /* End of file sqlite_driver.php */
-/* Location: ./system/database/drivers/sqlite/sqlite_driver.php */
\ No newline at end of file
+/* Location: ./system/database/drivers/sqlite/sqlite_driver.php */
diff --git a/system/database/drivers/sqlite3/sqlite3_driver.php b/system/database/drivers/sqlite3/sqlite3_driver.php
index fb45bee..d22f6a4 100644
--- a/system/database/drivers/sqlite3/sqlite3_driver.php
+++ b/system/database/drivers/sqlite3/sqlite3_driver.php
@@ -29,7 +29,7 @@
  * SQLite3 Database Adapter Class
  *
  * Note: _DB is an extender class that the app controller
- * creates dynamically based on whether the active record
+ * creates dynamically based on whether the query builder
  * class is being used or not.
  *
  * @package		CodeIgniter
diff --git a/system/database/drivers/sqlsrv/sqlsrv_driver.php b/system/database/drivers/sqlsrv/sqlsrv_driver.php
index c318f30..8cc500f 100644
--- a/system/database/drivers/sqlsrv/sqlsrv_driver.php
+++ b/system/database/drivers/sqlsrv/sqlsrv_driver.php
@@ -29,7 +29,7 @@
  * SQLSRV Database Adapter Class
  *
  * Note: _DB is an extender class that the app controller
- * creates dynamically based on whether the active record
+ * creates dynamically based on whether the query builder
  * class is being used or not.
  *
  * @package		CodeIgniter
@@ -521,4 +521,4 @@
 }
 
 /* End of file sqlsrv_driver.php */
-/* Location: ./system/database/drivers/sqlsrv/sqlsrv_driver.php */
\ No newline at end of file
+/* Location: ./system/database/drivers/sqlsrv/sqlsrv_driver.php */
diff --git a/system/helpers/array_helper.php b/system/helpers/array_helper.php
index 6f56d9d..6a7c8e3 100644
--- a/system/helpers/array_helper.php
+++ b/system/helpers/array_helper.php
@@ -37,19 +37,19 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Element
- *
- * Lets you determine whether an array index is set and whether it has a value.
- * If the element is empty it returns FALSE (or whatever you specify as the default value.)
- *
- * @param	string
- * @param	array
- * @param	mixed
- * @return	mixed	depends on what the array contains
- */
 if ( ! function_exists('element'))
 {
+	/**
+	 * Element
+	 *
+	 * Lets you determine whether an array index is set and whether it has a value.
+	 * If the element is empty it returns FALSE (or whatever you specify as the default value.)
+	 *
+	 * @param	string
+	 * @param	array
+	 * @param	mixed
+	 * @return	mixed	depends on what the array contains
+	 */
 	function element($item, $array, $default = FALSE)
 	{
 		return empty($array[$item]) ? $default : $array[$item];
@@ -58,14 +58,14 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Random Element - Takes an array as input and returns a random element
- *
- * @param	array
- * @return	mixed	depends on what the array contains
- */
 if ( ! function_exists('random_element'))
 {
+	/**
+	 * Random Element - Takes an array as input and returns a random element
+	 *
+	 * @param	array
+	 * @return	mixed	depends on what the array contains
+	 */
 	function random_element($array)
 	{
 		return is_array($array) ? $array[array_rand($array)] : $array;
@@ -74,19 +74,19 @@
 
 // --------------------------------------------------------------------
 
-/**
- * Elements
- *
- * Returns only the array items specified. Will return a default value if
- * it is not set.
- *
- * @param	array
- * @param	array
- * @param	mixed
- * @return	mixed	depends on what the array contains
- */
 if ( ! function_exists('elements'))
 {
+	/**
+	 * Elements
+	 *
+	 * Returns only the array items specified. Will return a default value if
+	 * it is not set.
+	 *
+	 * @param	array
+	 * @param	array
+	 * @param	mixed
+	 * @return	mixed	depends on what the array contains
+	 */
 	function elements($items, $array, $default = FALSE)
 	{
 		$return = array();
diff --git a/system/helpers/captcha_helper.php b/system/helpers/captcha_helper.php
index bdbc620..b116706 100644
--- a/system/helpers/captcha_helper.php
+++ b/system/helpers/captcha_helper.php
@@ -37,17 +37,17 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Create CAPTCHA
- *
- * @param	array	array of data for the CAPTCHA
- * @param	string	path to create the image in
- * @param	string	URL to the CAPTCHA image folder
- * @param	string	server path to font
- * @return	string
- */
 if ( ! function_exists('create_captcha'))
 {
+	/**
+	 * Create CAPTCHA
+	 *
+	 * @param	array	array of data for the CAPTCHA
+	 * @param	string	path to create the image in
+	 * @param	string	URL to the CAPTCHA image folder
+	 * @param	string	server path to font
+	 * @return	string
+	 */
 	function create_captcha($data = '', $img_path = '', $img_url = '', $font_path = '')
 	{
 		$defaults = array('word' => '', 'img_path' => '', 'img_url' => '', 'img_width' => '150', 'img_height' => '30', 'font_path' => '', 'expiration' => 7200);
diff --git a/system/helpers/cookie_helper.php b/system/helpers/cookie_helper.php
index 06560e7..f396c76 100644
--- a/system/helpers/cookie_helper.php
+++ b/system/helpers/cookie_helper.php
@@ -37,24 +37,24 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Set cookie
- *
- * Accepts seven parameters, or you can submit an associative
- * array in the first parameter containing all the values.
- *
- * @param	mixed
- * @param	string	the value of the cookie
- * @param	string	the number of seconds until expiration
- * @param	string	the cookie domain.  Usually:  .yourdomain.com
- * @param	string	the cookie path
- * @param	string	the cookie prefix
- * @param	bool	true makes the cookie secure
- * @param	bool	true makes the cookie accessible via http(s) only (no javascript)
- * @return	void
- */
 if ( ! function_exists('set_cookie'))
 {
+	/**
+	 * Set cookie
+	 *
+	 * Accepts seven parameters, or you can submit an associative
+	 * array in the first parameter containing all the values.
+	 *
+	 * @param	mixed
+	 * @param	string	the value of the cookie
+	 * @param	string	the number of seconds until expiration
+	 * @param	string	the cookie domain.  Usually:  .yourdomain.com
+	 * @param	string	the cookie path
+	 * @param	string	the cookie prefix
+	 * @param	bool	true makes the cookie secure
+	 * @param	bool	true makes the cookie accessible via http(s) only (no javascript)
+	 * @return	void
+	 */
 	function set_cookie($name = '', $value = '', $expire = '', $domain = '', $path = '/', $prefix = '', $secure = FALSE, $httponly = FALSE)
 	{
 		// Set the config file options
@@ -65,15 +65,15 @@
 
 // --------------------------------------------------------------------
 
-/**
- * Fetch an item from the COOKIE array
- *
- * @param	string
- * @param	bool
- * @return	mixed
- */
 if ( ! function_exists('get_cookie'))
 {
+	/**
+	 * Fetch an item from the COOKIE array
+	 *
+	 * @param	string
+	 * @param	bool
+	 * @return	mixed
+	 */
 	function get_cookie($index = '', $xss_clean = FALSE)
 	{
 		$CI =& get_instance();
@@ -84,17 +84,17 @@
 
 // --------------------------------------------------------------------
 
-/**
- * Delete a COOKIE
- *
- * @param	mixed
- * @param	string	the cookie domain. Usually: .yourdomain.com
- * @param	string	the cookie path
- * @param	string	the cookie prefix
- * @return	void
- */
 if ( ! function_exists('delete_cookie'))
 {
+	/**
+	 * Delete a COOKIE
+	 *
+	 * @param	mixed
+	 * @param	string	the cookie domain. Usually: .yourdomain.com
+	 * @param	string	the cookie path
+	 * @param	string	the cookie prefix
+	 * @return	void
+	 */
 	function delete_cookie($name = '', $domain = '', $path = '/', $prefix = '')
 	{
 		set_cookie($name, '', '', $domain, $path, $prefix);
diff --git a/system/helpers/date_helper.php b/system/helpers/date_helper.php
index f1ba364..531d1d3 100644
--- a/system/helpers/date_helper.php
+++ b/system/helpers/date_helper.php
@@ -37,15 +37,15 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Get "now" time
- *
- * Returns time() or its GMT equivalent based on the config file preference
- *
- * @return	int
- */
 if ( ! function_exists('now'))
 {
+	/**
+	 * Get "now" time
+	 *
+	 * Returns time() or its GMT equivalent based on the config file preference
+	 *
+	 * @return	int
+	 */
 	function now()
 	{
 		$CI =& get_instance();
@@ -70,24 +70,24 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Convert MySQL Style Datecodes
- *
- * This function is identical to PHPs date() function,
- * except that it allows date codes to be formatted using
- * the MySQL style, where each code letter is preceded
- * with a percent sign:  %Y %m %d etc...
- *
- * The benefit of doing dates this way is that you don't
- * have to worry about escaping your text letters that
- * match the date codes.
- *
- * @param	string
- * @param	int
- * @return	int
- */
 if ( ! function_exists('mdate'))
 {
+	/**
+	 * Convert MySQL Style Datecodes
+	 *
+	 * This function is identical to PHPs date() function,
+	 * except that it allows date codes to be formatted using
+	 * the MySQL style, where each code letter is preceded
+	 * with a percent sign:  %Y %m %d etc...
+	 *
+	 * The benefit of doing dates this way is that you don't
+	 * have to worry about escaping your text letters that
+	 * match the date codes.
+	 *
+	 * @param	string
+	 * @param	int
+	 * @return	int
+	 */
 	function mdate($datestr = '', $time = '')
 	{
 		if ($datestr == '')
@@ -109,17 +109,17 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Standard Date
- *
- * Returns a date formatted according to the submitted standard.
- *
- * @param	string	the chosen format
- * @param	int	Unix timestamp
- * @return	string
- */
 if ( ! function_exists('standard_date'))
 {
+	/**
+	 * Standard Date
+	 *
+	 * Returns a date formatted according to the submitted standard.
+	 *
+	 * @param	string	the chosen format
+	 * @param	int	Unix timestamp
+	 * @return	string
+	 */
 	function standard_date($fmt = 'DATE_RFC822', $time = '')
 	{
 		$formats = array(
@@ -146,19 +146,19 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Timespan
- *
- * Returns a span of seconds in this format:
- *	10 days 14 hours 36 minutes 47 seconds
- *
- * @param	int	a number of seconds
- * @param	int	Unix timestamp
- * @param	int	a number of display units
- * @return	string
- */
 if ( ! function_exists('timespan'))
 {
+	/**
+	 * Timespan
+	 *
+	 * Returns a span of seconds in this format:
+	 *	10 days 14 hours 36 minutes 47 seconds
+	 *
+	 * @param	int	a number of seconds
+	 * @param	int	Unix timestamp
+	 * @param	int	a number of display units
+	 * @return	string
+	 */
 	function timespan($seconds = 1, $time = '', $units = 7)
 	{
 		$CI =& get_instance();
@@ -261,18 +261,18 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Number of days in a month
- *
- * Takes a month/year as input and returns the number of days
- * for the given month/year. Takes leap years into consideration.
- *
- * @param	int	a numeric month
- * @param	int	a numeric year
- * @return	int
- */
 if ( ! function_exists('days_in_month'))
 {
+	/**
+	 * Number of days in a month
+	 *
+	 * Takes a month/year as input and returns the number of days
+	 * for the given month/year. Takes leap years into consideration.
+	 *
+	 * @param	int	a numeric month
+	 * @param	int	a numeric year
+	 * @return	int
+	 */
 	function days_in_month($month = 0, $year = '')
 	{
 		if ($month < 1 OR $month > 12)
@@ -300,14 +300,14 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Converts a local Unix timestamp to GMT
- *
- * @param	int	Unix timestamp
- * @return	int
- */
 if ( ! function_exists('local_to_gmt'))
 {
+	/**
+	 * Converts a local Unix timestamp to GMT
+	 *
+	 * @param	int	Unix timestamp
+	 * @return	int
+	 */
 	function local_to_gmt($time = '')
 	{
 		if ($time == '')
@@ -328,20 +328,20 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Converts GMT time to a localized value
- *
- * Takes a Unix timestamp (in GMT) as input, and returns
- * at the local value based on the timezone and DST setting
- * submitted
- *
- * @param	int	Unix timestamp
- * @param	string	timezone
- * @param	bool	whether DST is active
- * @return	int
- */
 if ( ! function_exists('gmt_to_local'))
 {
+	/**
+	 * Converts GMT time to a localized value
+	 *
+	 * Takes a Unix timestamp (in GMT) as input, and returns
+	 * at the local value based on the timezone and DST setting
+	 * submitted
+	 *
+	 * @param	int	Unix timestamp
+	 * @param	string	timezone
+	 * @param	bool	whether DST is active
+	 * @return	int
+	 */
 	function gmt_to_local($time = '', $timezone = 'UTC', $dst = FALSE)
 	{
 		if ($time == '')
@@ -362,14 +362,14 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Converts a MySQL Timestamp to Unix
- *
- * @param	int	Unix timestamp
- * @return	int
- */
 if ( ! function_exists('mysql_to_unix'))
 {
+	/**
+	 * Converts a MySQL Timestamp to Unix
+	 *
+	 * @param	int	Unix timestamp
+	 * @return	int
+	 */
 	function mysql_to_unix($time = '')
 	{
 		// We'll remove certain characters for backward compatibility
@@ -394,18 +394,18 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Unix to "Human"
- *
- * Formats Unix timestamp to the following prototype: 2006-08-21 11:35 PM
- *
- * @param	int	Unix timestamp
- * @param	bool	whether to show seconds
- * @param	string	format: us or euro
- * @return	string
- */
 if ( ! function_exists('unix_to_human'))
 {
+	/**
+	 * Unix to "Human"
+	 *
+	 * Formats Unix timestamp to the following prototype: 2006-08-21 11:35 PM
+	 *
+	 * @param	int	Unix timestamp
+	 * @param	bool	whether to show seconds
+	 * @param	string	format: us or euro
+	 * @return	string
+	 */
 	function unix_to_human($time = '', $seconds = FALSE, $fmt = 'us')
 	{
 		$r  = date('Y', $time).'-'.date('m', $time).'-'.date('d', $time).' ';
@@ -435,16 +435,16 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Convert "human" date to GMT
- *
- * Reverses the above process
- *
- * @param	string	format: us or euro
- * @return	int
- */
 if ( ! function_exists('human_to_unix'))
 {
+	/**
+	 * Convert "human" date to GMT
+	 *
+	 * Reverses the above process
+	 *
+	 * @param	string	format: us or euro
+	 * @return	int
+	 */
 	function human_to_unix($datestr = '')
 	{
 		if ($datestr == '')
@@ -509,16 +509,16 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Turns many "reasonably-date-like" strings into something
- * that is actually useful. This only works for dates after unix epoch.
- *
- * @param	string	The terribly formatted date-like string
- * @param	string	Date format to return (same as php date function)
- * @return	string
- */
 if ( ! function_exists('nice_date'))
 {
+	/**
+	 * Turns many "reasonably-date-like" strings into something
+	 * that is actually useful. This only works for dates after unix epoch.
+	 *
+	 * @param	string	The terribly formatted date-like string
+	 * @param	string	Date format to return (same as php date function)
+	 * @return	string
+	 */
 	function nice_date($bad_date = '', $format = FALSE)
 	{
 		if (empty($bad_date))
@@ -575,18 +575,18 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Timezone Menu
- *
- * Generates a drop-down menu of timezones.
- *
- * @param	string	timezone
- * @param	string	classname
- * @param	string	menu name
- * @return	string
- */
 if ( ! function_exists('timezone_menu'))
 {
+	/**
+	 * Timezone Menu
+	 *
+	 * Generates a drop-down menu of timezones.
+	 *
+	 * @param	string	timezone
+	 * @param	string	classname
+	 * @param	string	menu name
+	 * @return	string
+	 */
 	function timezone_menu($default = 'UTC', $class = "", $name = 'timezones')
 	{
 		$CI =& get_instance();
@@ -617,17 +617,17 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Timezones
- *
- * Returns an array of timezones. This is a helper function
- * for various other ones in this library
- *
- * @param	string	timezone
- * @return	string
- */
 if ( ! function_exists('timezones'))
 {
+	/**
+	 * Timezones
+	 *
+	 * Returns an array of timezones. This is a helper function
+	 * for various other ones in this library
+	 *
+	 * @param	string	timezone
+	 * @return	string
+	 */
 	function timezones($tz = '')
 	{
 		// Note: Don't change the order of these even though
diff --git a/system/helpers/directory_helper.php b/system/helpers/directory_helper.php
index 4044ace..bda8fe8 100644
--- a/system/helpers/directory_helper.php
+++ b/system/helpers/directory_helper.php
@@ -37,19 +37,20 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Create a Directory Map
- *
- * Reads the specified directory and builds an array
- * representation of it. Sub-folders contained with the
- * directory will be mapped as well.
- *
- * @param	string	path to source
- * @param	int	depth of directories to traverse (0 = fully recursive, 1 = current dir, etc)
- * @return	array
- */
 if ( ! function_exists('directory_map'))
 {
+	/**
+	 * Create a Directory Map
+	 *
+	 * Reads the specified directory and builds an array
+	 * representation of it. Sub-folders contained with the
+	 * directory will be mapped as well.
+	 *
+	 * @param	string	path to source
+	 * @param	int	depth of directories to traverse (0 = fully recursive, 1 = current dir, etc)
+	 * @param	bool	whether to show hidden files
+	 * @return	array
+	 */
 	function directory_map($source_dir, $directory_depth = 0, $hidden = FALSE)
 	{
 		if ($fp = @opendir($source_dir))
diff --git a/system/helpers/download_helper.php b/system/helpers/download_helper.php
index 8b87f81..97e6986 100644
--- a/system/helpers/download_helper.php
+++ b/system/helpers/download_helper.php
@@ -37,18 +37,18 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Force Download
- *
- * Generates headers that force a download to happen
- *
- * @param	string	filename
- * @param	mixed	the data to be downloaded
- * @param	bool	wether to try and send the actual file MIME type
- * @return	void
- */
 if ( ! function_exists('force_download'))
 {
+	/**
+	 * Force Download
+	 *
+	 * Generates headers that force a download to happen
+	 *
+	 * @param	string	filename
+	 * @param	mixed	the data to be downloaded
+	 * @param	bool	wether to try and send the actual file MIME type
+	 * @return	void
+	 */
 	function force_download($filename = '', $data = '', $set_mime = FALSE)
 	{
 		if ($filename == '' OR $data == '')
diff --git a/system/helpers/email_helper.php b/system/helpers/email_helper.php
index 497625c..0516e93 100644
--- a/system/helpers/email_helper.php
+++ b/system/helpers/email_helper.php
@@ -37,14 +37,14 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Validate email address
- *
- * @param	string
- * @return	bool
- */
 if ( ! function_exists('valid_email'))
 {
+	/**
+	 * Validate email address
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
 	function valid_email($address)
 	{
 		return (bool) preg_match('/^([a-z0-9\+_\-]+)(\.[a-z0-9\+_\-]+)*@([a-z0-9\-]+\.)+[a-z]{2,6}$/ix', $address);
@@ -53,16 +53,16 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Send an email
- *
- * @param	string
- * @param	string
- * @param	string
- * @return	bool
- */
 if ( ! function_exists('send_email'))
 {
+	/**
+	 * Send an email
+	 *
+	 * @param	string
+	 * @param	string
+	 * @param	string
+	 * @return	bool
+	 */
 	function send_email($recipient, $subject = 'Test email', $message = 'Hello World')
 	{
 		return mail($recipient, $subject, $message);
diff --git a/system/helpers/file_helper.php b/system/helpers/file_helper.php
index 3a373ef..fb45034 100644
--- a/system/helpers/file_helper.php
+++ b/system/helpers/file_helper.php
@@ -37,16 +37,16 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Read File
- *
- * Opens the file specfied in the path and returns it as a string.
- *
- * @param	string	path to file
- * @return	string
- */
 if ( ! function_exists('read_file'))
 {
+	/**
+	 * Read File
+	 *
+	 * Opens the file specfied in the path and returns it as a string.
+	 *
+	 * @param	string	path to file
+	 * @return	string
+	 */
 	function read_file($file)
 	{
 		if ( ! file_exists($file))
@@ -81,18 +81,19 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Write File
- *
- * Writes data to the file specified in the path.
- * Creates a new file if non-existent.
- *
- * @param	string	path to file
- * @param	string	file data
- * @return	bool
- */
 if ( ! function_exists('write_file'))
 {
+	/**
+	 * Write File
+	 *
+	 * Writes data to the file specified in the path.
+	 * Creates a new file if non-existent.
+	 *
+	 * @param	string	path to file
+	 * @param	string	file data
+	 * @param	int
+	 * @return	bool
+	 */
 	function write_file($path, $data, $mode = FOPEN_WRITE_CREATE_DESTRUCTIVE)
 	{
 		if ( ! $fp = @fopen($path, $mode))
@@ -111,22 +112,22 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Delete Files
- *
- * Deletes all files contained in the supplied directory path.
- * Files must be writable or owned by the system in order to be deleted.
- * If the second parameter is set to TRUE, any directories contained
- * within the supplied base directory will be nuked as well.
- *
- * @param	string	path to file
- * @param	bool	whether to delete any directories found in the path
- * @param	int
- * @param	bool	whether to skip deleting .htaccess and index page files
- * @return	bool
- */
 if ( ! function_exists('delete_files'))
 {
+	/**
+	 * Delete Files
+	 *
+	 * Deletes all files contained in the supplied directory path.
+	 * Files must be writable or owned by the system in order to be deleted.
+	 * If the second parameter is set to TRUE, any directories contained
+	 * within the supplied base directory will be nuked as well.
+	 *
+	 * @param	string	path to file
+	 * @param	bool	whether to delete any directories found in the path
+	 * @param	int
+	 * @param	bool	whether to skip deleting .htaccess and index page files
+	 * @return	bool
+	 */
 	function delete_files($path, $del_dir = FALSE, $level = 0, $htdocs = FALSE)
 	{
 		// Trim the trailing slash
@@ -145,7 +146,7 @@
 				{
 					delete_files($path.DIRECTORY_SEPARATOR.$filename, $del_dir, $level + 1, $htdocs);
 				}
-				elseif ($htdocs === TRUE && ! preg_match('/^(\.htaccess|index\.(html|htm|php))$/', $filename))
+				elseif ($htdocs === TRUE && ! preg_match('/^(\.htaccess|index\.(html|htm|php)|web\.config)$/i', $filename))
 				{
 					@unlink($path.DIRECTORY_SEPARATOR.$filename);
 				}
@@ -164,19 +165,19 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Get Filenames
- *
- * Reads the specified directory and builds an array containing the filenames.
- * Any sub-folders contained within the specified path are read as well.
- *
- * @param	string	path to source
- * @param	bool	whether to include the path as part of the filename
- * @param	bool	internal variable to determine recursion status - do not use in calls
- * @return	array
- */
 if ( ! function_exists('get_filenames'))
 {
+	/**
+	 * Get Filenames
+	 *
+	 * Reads the specified directory and builds an array containing the filenames.
+	 * Any sub-folders contained within the specified path are read as well.
+	 *
+	 * @param	string	path to source
+	 * @param	bool	whether to include the path as part of the filename
+	 * @param	bool	internal variable to determine recursion status - do not use in calls
+	 * @return	array
+	 */
 	function get_filenames($source_dir, $include_path = FALSE, $_recursion = FALSE)
 	{
 		static $_filedata = array();
@@ -212,21 +213,21 @@
 
 // --------------------------------------------------------------------
 
-/**
- * Get Directory File Information
- *
- * Reads the specified directory and builds an array containing the filenames,
- * filesize, dates, and permissions
- *
- * Any sub-folders contained within the specified path are read as well.
- *
- * @param	string	path to source
- * @param	bool	Look only at the top level directory specified?
- * @param	bool	internal variable to determine recursion status - do not use in calls
- * @return	array
- */
 if ( ! function_exists('get_dir_file_info'))
 {
+	/**
+	 * Get Directory File Information
+	 *
+	 * Reads the specified directory and builds an array containing the filenames,
+	 * filesize, dates, and permissions
+	 *
+	 * Any sub-folders contained within the specified path are read as well.
+	 *
+	 * @param	string	path to source
+	 * @param	bool	Look only at the top level directory specified?
+	 * @param	bool	internal variable to determine recursion status - do not use in calls
+	 * @return	array
+	 */
 	function get_dir_file_info($source_dir, $top_level_only = TRUE, $_recursion = FALSE)
 	{
 		static $_filedata = array();
@@ -265,20 +266,20 @@
 
 // --------------------------------------------------------------------
 
-/**
-* Get File Info
-*
-* Given a file and path, returns the name, path, size, date modified
-* Second parameter allows you to explicitly declare what information you want returned
-* Options are: name, server_path, size, date, readable, writable, executable, fileperms
-* Returns FALSE if the file cannot be found.
-*
-* @param	string	path to file
-* @param	mixed	array or comma separated string of information returned
-* @return	array
-*/
 if ( ! function_exists('get_file_info'))
 {
+	/**
+	 * Get File Info
+	 *
+	 * Given a file and path, returns the name, path, size, date modified
+	 * Second parameter allows you to explicitly declare what information you want returned
+	 * Options are: name, server_path, size, date, readable, writable, executable, fileperms
+	 * Returns FALSE if the file cannot be found.
+	 *
+	 * @param	string	path to file
+	 * @param	mixed	array or comma separated string of information returned
+	 * @return	array
+	 */
 	function get_file_info($file, $returned_values = array('name', 'server_path', 'size', 'date'))
 	{
 
@@ -330,20 +331,20 @@
 
 // --------------------------------------------------------------------
 
-/**
- * Get Mime by Extension
- *
- * Translates a file extension into a mime type based on config/mimes.php.
- * Returns FALSE if it can't determine the type, or open the mime config file
- *
- * Note: this is NOT an accurate way of determining file mime types, and is here strictly as a convenience
- * It should NOT be trusted, and should certainly NOT be used for security
- *
- * @param	string	path to file
- * @return	mixed
- */
 if ( ! function_exists('get_mime_by_extension'))
 {
+	/**
+	 * Get Mime by Extension
+	 *
+	 * Translates a file extension into a mime type based on config/mimes.php.
+	 * Returns FALSE if it can't determine the type, or open the mime config file
+	 *
+	 * Note: this is NOT an accurate way of determining file mime types, and is here strictly as a convenience
+	 * It should NOT be trusted, and should certainly NOT be used for security
+	 *
+	 * @param	string	path to file
+	 * @return	mixed
+	 */
 	function get_mime_by_extension($file)
 	{
 		$extension = strtolower(substr(strrchr($file, '.'), 1));
@@ -386,17 +387,17 @@
 
 // --------------------------------------------------------------------
 
-/**
- * Symbolic Permissions
- *
- * Takes a numeric value representing a file's permissions and returns
- * standard symbolic notation representing that value
- *
- * @param	int
- * @return	string
- */
 if ( ! function_exists('symbolic_permissions'))
 {
+	/**
+	 * Symbolic Permissions
+	 *
+	 * Takes a numeric value representing a file's permissions and returns
+	 * standard symbolic notation representing that value
+	 *
+	 * @param	int
+	 * @return	string
+	 */
 	function symbolic_permissions($perms)
 	{
 		if (($perms & 0xC000) === 0xC000)
@@ -453,17 +454,17 @@
 
 // --------------------------------------------------------------------
 
-/**
- * Octal Permissions
- *
- * Takes a numeric value representing a file's permissions and returns
- * a three character string representing the file's octal permissions
- *
- * @param	int
- * @return	string
- */
 if ( ! function_exists('octal_permissions'))
 {
+	/**
+	 * Octal Permissions
+	 *
+	 * Takes a numeric value representing a file's permissions and returns
+	 * a three character string representing the file's octal permissions
+	 *
+	 * @param	int
+	 * @return	string
+	 */
 	function octal_permissions($perms)
 	{
 		return substr(sprintf('%o', $perms), -3);
diff --git a/system/helpers/form_helper.php b/system/helpers/form_helper.php
index e5b4876..b246d72 100644
--- a/system/helpers/form_helper.php
+++ b/system/helpers/form_helper.php
@@ -36,18 +36,18 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Form Declaration
- *
- * Creates the opening portion of the form.
- *
- * @param	string	the URI segments of the form destination
- * @param	array	a key/value pair of attributes
- * @param	array	a key/value pair hidden data
- * @return	string
- */
 if ( ! function_exists('form_open'))
 {
+	/**
+	 * Form Declaration
+	 *
+	 * Creates the opening portion of the form.
+	 *
+	 * @param	string	the URI segments of the form destination
+	 * @param	array	a key/value pair of attributes
+	 * @param	array	a key/value pair hidden data
+	 * @return	string
+	 */
 	function form_open($action = '', $attributes = '', $hidden = array())
 	{
 		$CI =& get_instance();
@@ -85,18 +85,18 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Form Declaration - Multipart type
- *
- * Creates the opening portion of the form, but with "multipart/form-data".
- *
- * @param	string	the URI segments of the form destination
- * @param	array	a key/value pair of attributes
- * @param	array	a key/value pair hidden data
- * @return	string
- */
 if ( ! function_exists('form_open_multipart'))
 {
+	/**
+	 * Form Declaration - Multipart type
+	 *
+	 * Creates the opening portion of the form, but with "multipart/form-data".
+	 *
+	 * @param	string	the URI segments of the form destination
+	 * @param	array	a key/value pair of attributes
+	 * @param	array	a key/value pair hidden data
+	 * @return	string
+	 */
 	function form_open_multipart($action = '', $attributes = array(), $hidden = array())
 	{
 		if (is_string($attributes))
@@ -114,18 +114,19 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Hidden Input Field
- *
- * Generates hidden fields. You can pass a simple key/value string or
- * an associative array with multiple values.
- *
- * @param	mixed
- * @param	string
- * @return	string
- */
 if ( ! function_exists('form_hidden'))
 {
+	/**
+	 * Hidden Input Field
+	 *
+	 * Generates hidden fields. You can pass a simple key/value string or
+	 * an associative array with multiple values.
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
 	function form_hidden($name, $value = '', $recursing = FALSE)
 	{
 		static $form;
@@ -163,16 +164,16 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Text Input Field
- *
- * @param	mixed
- * @param	string
- * @param	string
- * @return	string
- */
 if ( ! function_exists('form_input'))
 {
+	/**
+	 * Text Input Field
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
 	function form_input($data = '', $value = '', $extra = '')
 	{
 		$defaults = array('type' => 'text', 'name' => ( ! is_array($data) ? $data : ''), 'value' => $value);
@@ -183,18 +184,19 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Password Field
- *
- * Identical to the input function but adds the "password" type
- *
- * @param	mixed
- * @param	string
- * @param	string
- * @return	string
- */
+
 if ( ! function_exists('form_password'))
 {
+	/**
+	 * Password Field
+	 *
+	 * Identical to the input function but adds the "password" type
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
 	function form_password($data = '', $value = '', $extra = '')
 	{
 		if ( ! is_array($data))
@@ -209,18 +211,18 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Upload Field
- *
- * Identical to the input function but adds the "file" type
- *
- * @param	mixed
- * @param	string
- * @param	string
- * @return	string
- */
 if ( ! function_exists('form_upload'))
 {
+	/**
+	 * Upload Field
+	 *
+	 * Identical to the input function but adds the "file" type
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
 	function form_upload($data = '', $value = '', $extra = '')
 	{
 		if ( ! is_array($data))
@@ -235,16 +237,16 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Textarea field
- *
- * @param	mixed
- * @param	string
- * @param	string
- * @return	string
- */
 if ( ! function_exists('form_textarea'))
 {
+	/**
+	 * Textarea field
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
 	function form_textarea($data = '', $value = '', $extra = '')
 	{
 		$defaults = array('name' => ( ! is_array($data) ? $data : ''), 'cols' => '40', 'rows' => '10');
@@ -266,17 +268,17 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Multi-select menu
- *
- * @param	string
- * @param	array
- * @param	mixed
- * @param	string
- * @return	string
- */
 if ( ! function_exists('form_multiselect'))
 {
+	/**
+	 * Multi-select menu
+	 *
+	 * @param	string
+	 * @param	array
+	 * @param	mixed
+	 * @param	string
+	 * @return	string
+	 */
 	function form_multiselect($name = '', $options = array(), $selected = array(), $extra = '')
 	{
 		if ( ! strpos($extra, 'multiple'))
@@ -290,17 +292,17 @@
 
 // --------------------------------------------------------------------
 
-/**
- * Drop-down Menu
- *
- * @param	string
- * @param	array
- * @param	string
- * @param	string
- * @return	string
- */
 if ( ! function_exists('form_dropdown'))
 {
+	/**
+	 * Drop-down Menu
+	 *
+	 * @param	string
+	 * @param	array
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
 	function form_dropdown($name = '', $options = array(), $selected = array(), $extra = '')
 	{
 		// If name is really an array then we'll call the function again using the array
@@ -358,17 +360,17 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Checkbox Field
- *
- * @param	mixed
- * @param	string
- * @param	bool
- * @param	string
- * @return	string
- */
 if ( ! function_exists('form_checkbox'))
 {
+	/**
+	 * Checkbox Field
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	bool
+	 * @param	string
+	 * @return	string
+	 */
 	function form_checkbox($data = '', $value = '', $checked = FALSE, $extra = '')
 	{
 		$defaults = array('type' => 'checkbox', 'name' => ( ! is_array($data) ? $data : ''), 'value' => $value);
@@ -402,17 +404,17 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Radio Button
- *
- * @param	mixed
- * @param	string
- * @param	bool
- * @param	string
- * @return	string
- */
 if ( ! function_exists('form_radio'))
 {
+	/**
+	 * Radio Button
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	bool
+	 * @param	string
+	 * @return	string
+	 */
 	function form_radio($data = '', $value = '', $checked = FALSE, $extra = '')
 	{
 		if ( ! is_array($data))
@@ -427,16 +429,16 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Submit Button
- *
- * @param	mixed
- * @param	string
- * @param	string
- * @return	string
- */
 if ( ! function_exists('form_submit'))
 {
+	/**
+	 * Submit Button
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
 	function form_submit($data = '', $value = '', $extra = '')
 	{
 		$defaults = array('type' => 'submit', 'name' => ( ! is_array($data) ? $data : ''), 'value' => $value);
@@ -446,16 +448,16 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Reset Button
- *
- * @param	mixed
- * @param	string
- * @param	string
- * @return	string
- */
 if ( ! function_exists('form_reset'))
 {
+	/**
+	 * Reset Button
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
 	function form_reset($data = '', $value = '', $extra = '')
 	{
 		$defaults = array('type' => 'reset', 'name' => ( ! is_array($data) ? $data : ''), 'value' => $value);
@@ -465,16 +467,16 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Form Button
- *
- * @param	mixed
- * @param	string
- * @param	string
- * @return	string
- */
 if ( ! function_exists('form_button'))
 {
+	/**
+	 * Form Button
+	 *
+	 * @param	mixed
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
 	function form_button($data = '', $content = '', $extra = '')
 	{
 		$defaults = array('name' => ( ! is_array($data) ? $data : ''), 'type' => 'button');
@@ -490,16 +492,16 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Form Label Tag
- *
- * @param	string	The text to appear onscreen
- * @param	string	The id the label applies to
- * @param	string	Additional attributes
- * @return	string
- */
 if ( ! function_exists('form_label'))
 {
+	/**
+	 * Form Label Tag
+	 *
+	 * @param	string	The text to appear onscreen
+	 * @param	string	The id the label applies to
+	 * @param	string	Additional attributes
+	 * @return	string
+	 */
 	function form_label($label_text = '', $id = '', $attributes = array())
 	{
 
@@ -523,18 +525,19 @@
 }
 
 // ------------------------------------------------------------------------
-/**
- * Fieldset Tag
- *
- * Used to produce <fieldset><legend>text</legend>.  To close fieldset
- * use form_fieldset_close()
- *
- * @param	string	The legend text
- * @param	string	Additional attributes
- * @return	string
- */
+
 if ( ! function_exists('form_fieldset'))
 {
+	/**
+	 * Fieldset Tag
+	 *
+	 * Used to produce <fieldset><legend>text</legend>.  To close fieldset
+	 * use form_fieldset_close()
+	 *
+	 * @param	string	The legend text
+	 * @param	string	Additional attributes
+	 * @return	string
+	 */
 	function form_fieldset($legend_text = '', $attributes = array())
 	{
 		$fieldset = '<fieldset'._attributes_to_string($attributes, FALSE).">\n";
@@ -549,14 +552,14 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Fieldset Close Tag
- *
- * @param	string
- * @return	string
- */
 if ( ! function_exists('form_fieldset_close'))
 {
+	/**
+	 * Fieldset Close Tag
+	 *
+	 * @param	string
+	 * @return	string
+	 */
 	function form_fieldset_close($extra = '')
 	{
 		return '</fieldset>'.$extra;
@@ -565,14 +568,14 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Form Close Tag
- *
- * @param	string
- * @return	string
- */
 if ( ! function_exists('form_close'))
 {
+	/**
+	 * Form Close Tag
+	 *
+	 * @param	string
+	 * @return	string
+	 */
 	function form_close($extra = '')
 	{
 		return '</form>'.$extra;
@@ -581,16 +584,17 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Form Prep
- *
- * Formats text so that it can be safely placed in a form field in the event it has HTML tags.
- *
- * @param	string
- * @return	string
- */
 if ( ! function_exists('form_prep'))
 {
+	/**
+	 * Form Prep
+	 *
+	 * Formats text so that it can be safely placed in a form field in the event it has HTML tags.
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
 	function form_prep($str = '', $field_name = '')
 	{
 		static $prepped_fields = array();
@@ -631,18 +635,19 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Form Value
- *
- * Grabs a value from the POST array for the specified field so you can
- * re-populate an input field or textarea. If Form Validation
- * is active it retrieves the info from the validation class
- *
- * @param	string
- * @return	mixed
- */
 if ( ! function_exists('set_value'))
 {
+	/**
+	 * Form Value
+	 *
+	 * Grabs a value from the POST array for the specified field so you can
+	 * re-populate an input field or textarea. If Form Validation
+	 * is active it retrieves the info from the validation class
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	mixed
+	 */
 	function set_value($field = '', $default = '')
 	{
 		if (FALSE === ($OBJ =& _get_validation_object()))
@@ -661,19 +666,19 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Set Select
- *
- * Let's you set the selected value of a <select> menu via data in the POST array.
- * If Form Validation is active it retrieves the info from the validation class
- *
- * @param	string
- * @param	string
- * @param	bool
- * @return	string
- */
 if ( ! function_exists('set_select'))
 {
+	/**
+	 * Set Select
+	 *
+	 * Let's you set the selected value of a <select> menu via data in the POST array.
+	 * If Form Validation is active it retrieves the info from the validation class
+	 *
+	 * @param	string
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
 	function set_select($field = '', $value = '', $default = FALSE)
 	{
 		$OBJ =& _get_validation_object();
@@ -712,19 +717,19 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Set Checkbox
- *
- * Let's you set the selected value of a checkbox via the value in the POST array.
- * If Form Validation is active it retrieves the info from the validation class
- *
- * @param	string
- * @param	string
- * @param	bool
- * @return	string
- */
 if ( ! function_exists('set_checkbox'))
 {
+	/**
+	 * Set Checkbox
+	 *
+	 * Let's you set the selected value of a checkbox via the value in the POST array.
+	 * If Form Validation is active it retrieves the info from the validation class
+	 *
+	 * @param	string
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
 	function set_checkbox($field = '', $value = '', $default = FALSE)
 	{
 		$OBJ =& _get_validation_object();
@@ -763,19 +768,19 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Set Radio
- *
- * Let's you set the selected value of a radio field via info in the POST array.
- * If Form Validation is active it retrieves the info from the validation class
- *
- * @param	string
- * @param	string
- * @param	bool
- * @return	string
- */
 if ( ! function_exists('set_radio'))
 {
+	/**
+	 * Set Radio
+	 *
+	 * Let's you set the selected value of a radio field via info in the POST array.
+	 * If Form Validation is active it retrieves the info from the validation class
+	 *
+	 * @param	string
+	 * @param	string
+	 * @param	bool
+	 * @return	string
+	 */
 	function set_radio($field = '', $value = '', $default = FALSE)
 	{
 		$OBJ =& _get_validation_object();
@@ -817,19 +822,20 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Form Error
- *
- * Returns the error for a specific form field. This is a helper for the
- * form validation class.
- *
- * @param	string
- * @param	string
- * @param	string
- * @return	string
- */
+
 if ( ! function_exists('form_error'))
 {
+	/**
+	 * Form Error
+	 *
+	 * Returns the error for a specific form field. This is a helper for the
+	 * form validation class.
+	 *
+	 * @param	string
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
 	function form_error($field = '', $prefix = '', $suffix = '')
 	{
 		if (FALSE === ($OBJ =& _get_validation_object()))
@@ -843,18 +849,18 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Validation Error String
- *
- * Returns all the errors associated with a form submission. This is a helper
- * function for the form validation class.
- *
- * @param	string
- * @param	string
- * @return	string
- */
 if ( ! function_exists('validation_errors'))
 {
+	/**
+	 * Validation Error String
+	 *
+	 * Returns all the errors associated with a form submission. This is a helper
+	 * function for the form validation class.
+	 *
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
 	function validation_errors($prefix = '', $suffix = '')
 	{
 		if (FALSE === ($OBJ =& _get_validation_object()))
@@ -868,17 +874,17 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Parse the form attributes
- *
- * Helper function used by some of the form helpers
- *
- * @param	array
- * @param	array
- * @return	string
- */
 if ( ! function_exists('_parse_form_attributes'))
 {
+	/**
+	 * Parse the form attributes
+	 *
+	 * Helper function used by some of the form helpers
+	 *
+	 * @param	array
+	 * @param	array
+	 * @return	string
+	 */
 	function _parse_form_attributes($attributes, $default)
 	{
 		if (is_array($attributes))
@@ -916,17 +922,17 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Attributes To String
- *
- * Helper function used by some of the form helpers
- *
- * @param	mixed
- * @param	bool
- * @return	string
- */
 if ( ! function_exists('_attributes_to_string'))
 {
+	/**
+	 * Attributes To String
+	 *
+	 * Helper function used by some of the form helpers
+	 *
+	 * @param	mixed
+	 * @param	bool
+	 * @return	string
+	 */
 	function _attributes_to_string($attributes, $formtag = FALSE)
 	{
 		if (is_string($attributes) && strlen($attributes) > 0)
@@ -975,16 +981,16 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Validation Object
- *
- * Determines what the form validation class was instantiated as, fetches
- * the object and returns it.
- *
- * @return	mixed
- */
 if ( ! function_exists('_get_validation_object'))
 {
+	/**
+	 * Validation Object
+	 *
+	 * Determines what the form validation class was instantiated as, fetches
+	 * the object and returns it.
+	 *
+	 * @return	mixed
+	 */
 	function &_get_validation_object()
 	{
 		$CI =& get_instance();
diff --git a/system/helpers/html_helper.php b/system/helpers/html_helper.php
index 0417bd2..124f580 100644
--- a/system/helpers/html_helper.php
+++ b/system/helpers/html_helper.php
@@ -37,17 +37,18 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Heading
- *
- * Generates an HTML heading tag.
- *
- * @param	string	content
- * @param	int	heading level
- * @return	string
- */
 if ( ! function_exists('heading'))
 {
+	/**
+	 * Heading
+	 *
+	 * Generates an HTML heading tag.
+	 *
+	 * @param	string	content
+	 * @param	int	heading level
+	 * @param	string
+	 * @return	string
+	 */
 	function heading($data = '', $h = '1', $attributes = '')
 	{
 		return '<h'.$h.($attributes != '' ? ' ' : '').$attributes.'>'.$data.'</h'.$h.'>';
@@ -56,17 +57,17 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Unordered List
- *
- * Generates an HTML unordered list from an single or multi-dimensional array.
- *
- * @param	array
- * @param	mixed
- * @return	string
- */
 if ( ! function_exists('ul'))
 {
+	/**
+	 * Unordered List
+	 *
+	 * Generates an HTML unordered list from an single or multi-dimensional array.
+	 *
+	 * @param	array
+	 * @param	mixed
+	 * @return	string
+	 */
 	function ul($list, $attributes = '')
 	{
 		return _list('ul', $list, $attributes);
@@ -75,17 +76,17 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Ordered List
- *
- * Generates an HTML ordered list from an single or multi-dimensional array.
- *
- * @param	array
- * @param	mixed
- * @return	string
- */
 if ( ! function_exists('ol'))
 {
+	/**
+	 * Ordered List
+	 *
+	 * Generates an HTML ordered list from an single or multi-dimensional array.
+	 *
+	 * @param	array
+	 * @param	mixed
+	 * @return	string
+	 */
 	function ol($list, $attributes = '')
 	{
 		return _list('ol', $list, $attributes);
@@ -94,19 +95,19 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Generates the list
- *
- * Generates an HTML ordered list from an single or multi-dimensional array.
- *
- * @param	string
- * @param	mixed
- * @param	mixed
- * @param	int
- * @return	string
- */
 if ( ! function_exists('_list'))
 {
+	/**
+	 * Generates the list
+	 *
+	 * Generates an HTML ordered list from an single or multi-dimensional array.
+	 *
+	 * @param	string
+	 * @param	mixed
+	 * @param	mixed
+	 * @param	int
+	 * @return	string
+	 */
 	function _list($type = 'ul', $list, $attributes = '', $depth = 0)
 	{
 		// If an array wasn't submitted there's nothing to do...
@@ -165,14 +166,14 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Generates HTML BR tags based on number supplied
- *
- * @param	int
- * @return	string
- */
 if ( ! function_exists('br'))
 {
+	/**
+	 * Generates HTML BR tags based on number supplied
+	 *
+	 * @param	int
+	 * @return	string
+	 */
 	function br($num = 1)
 	{
 		return str_repeat('<br />', $num);
@@ -181,17 +182,17 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Image
- *
- * Generates an <img /> element
- *
- * @param	mixed
- * @param	bool
- * @return	string
- */
 if ( ! function_exists('img'))
 {
+	/**
+	 * Image
+	 *
+	 * Generates an <img /> element
+	 *
+	 * @param	mixed
+	 * @param	bool
+	 * @return	string
+	 */
 	function img($src = '', $index_page = FALSE)
 	{
 		if ( ! is_array($src) )
@@ -234,20 +235,20 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Doctype
- *
- * Generates a page document type declaration
- *
- * Valid options are xhtml-11, xhtml-strict, xhtml-trans, xhtml-frame,
- * html4-strict, html4-trans, and html4-frame. Values are saved in the
- * doctypes config file.
- *
- * @param	string	type	The doctype to be generated
- * @return	string
- */
 if ( ! function_exists('doctype'))
 {
+	/**
+	 * Doctype
+	 *
+	 * Generates a page document type declaration
+	 *
+	 * Valid options are xhtml-11, xhtml-strict, xhtml-trans, xhtml-frame,
+	 * html4-strict, html4-trans, and html4-frame. Values are saved in the
+	 * doctypes config file.
+	 *
+	 * @param	string	type	The doctype to be generated
+	 * @return	string
+	 */
 	function doctype($type = 'xhtml1-strict')
 	{
 		global $_doctypes;
@@ -275,21 +276,21 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Link
- *
- * Generates link to a CSS file
- *
- * @param	mixed	stylesheet hrefs or an array
- * @param	string	rel
- * @param	string	type
- * @param	string	title
- * @param	string	media
- * @param	bool	should index_page be added to the css path
- * @return	string
- */
 if ( ! function_exists('link_tag'))
 {
+	/**
+	 * Link
+	 *
+	 * Generates link to a CSS file
+	 *
+	 * @param	mixed	stylesheet hrefs or an array
+	 * @param	string	rel
+	 * @param	string	type
+	 * @param	string	title
+	 * @param	string	media
+	 * @param	bool	should index_page be added to the css path
+	 * @return	string
+	 */
 	function link_tag($href = '', $rel = 'stylesheet', $type = 'text/css', $title = '', $media = '', $index_page = FALSE)
 	{
 		$CI =& get_instance();
@@ -350,17 +351,17 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Generates meta tags from an array of key/values
- *
- * @param	array
- * @param	string
- * @param	string
- * @param	string
- * @return	string
- */
 if ( ! function_exists('meta'))
 {
+	/**
+	 * Generates meta tags from an array of key/values
+	 *
+	 * @param	array
+	 * @param	string
+	 * @param	string
+	 * @param	string
+	 * @return	string
+	 */
 	function meta($name = '', $content = '', $type = 'name', $newline = "\n")
 	{
 		// Since we allow the data to be passes as a string, a simple array
@@ -392,14 +393,14 @@
 
 // ------------------------------------------------------------------------
 
-/**
- * Generates non-breaking space entities based on number supplied
- *
- * @param	int
- * @return	string
- */
 if ( ! function_exists('nbs'))
 {
+	/**
+	 * Generates non-breaking space entities based on number supplied
+	 *
+	 * @param	int
+	 * @return	string
+	 */
 	function nbs($num = 1)
 	{
 		return str_repeat('&nbsp;', $num);
diff --git a/system/helpers/smiley_helper.php b/system/helpers/smiley_helper.php
index 8dba74e..638100e 100644
--- a/system/helpers/smiley_helper.php
+++ b/system/helpers/smiley_helper.php
@@ -40,7 +40,7 @@
 /**
  * Smiley Javascript
  *
- * Returns the javascript required for the smiley insertion.  Optionally takes
+ * Returns the javascript required for the smiley insertion. Optionally takes
  * an array of aliases to loosely couple the smiley array to the view.
  *
  * @param	mixed	alias name or array of alias->field_id pairs
@@ -52,7 +52,6 @@
 	function smiley_js($alias = '', $field_id = '', $inline = TRUE)
 	{
 		static $do_setup = TRUE;
-
 		$r = '';
 
 		if ($alias != '' && ! is_array($alias))
@@ -62,69 +61,58 @@
 
 		if ($do_setup === TRUE)
 		{
-				$do_setup = FALSE;
+			$do_setup = FALSE;
+			$m = array();
 
-				$m = array();
-
-				if (is_array($alias))
-				{
-					foreach ($alias as $name => $id)
-					{
-						$m[] = '"'.$name.'" : "'.$id.'"';
-					}
-				}
-
-				$m = '{'.implode(',', $m).'}';
-
-				$r .= <<<EOF
-				var smiley_map = {$m};
-
-				function insert_smiley(smiley, field_id) {
-					var el = document.getElementById(field_id), newStart;
-
-					if ( ! el && smiley_map[field_id]) {
-						el = document.getElementById(smiley_map[field_id]);
-
-						if ( ! el)
-							return false;
-					}
-
-					el.focus();
-					smiley = " " + smiley;
-
-					if ('selectionStart' in el) {
-						newStart = el.selectionStart + smiley.length;
-
-						el.value = el.value.substr(0, el.selectionStart) +
-										smiley +
-										el.value.substr(el.selectionEnd, el.value.length);
-						el.setSelectionRange(newStart, newStart);
-					}
-					else if (document.selection) {
-						document.selection.createRange().text = smiley;
-					}
-				}
-EOF;
-		}
-		else
-		{
 			if (is_array($alias))
 			{
 				foreach ($alias as $name => $id)
 				{
-					$r .= 'smiley_map["'.$name.'"] = "'.$id.'";'."\n";
+					$m[] = '"'.$name.'" : "'.$id.'"';
 				}
 			}
+
+			$m = '{'.implode(',', $m).'}';
+
+			$r .= <<<EOF
+			var smiley_map = {$m};
+
+			function insert_smiley(smiley, field_id) {
+				var el = document.getElementById(field_id), newStart;
+
+				if ( ! el && smiley_map[field_id]) {
+					el = document.getElementById(smiley_map[field_id]);
+
+					if ( ! el)
+						return false;
+				}
+
+				el.focus();
+				smiley = " " + smiley;
+
+				if ('selectionStart' in el) {
+					newStart = el.selectionStart + smiley.length;
+
+					el.value = el.value.substr(0, el.selectionStart) +
+									smiley +
+									el.value.substr(el.selectionEnd, el.value.length);
+					el.setSelectionRange(newStart, newStart);
+				}
+				else if (document.selection) {
+					document.selection.createRange().text = smiley;
+				}
+			}
+EOF;
+		}
+		elseif (is_array($alias))
+		{
+			foreach ($alias as $name => $id)
+			{
+				$r .= 'smiley_map["'.$name.'"] = "'.$id."\";\n";
+			}
 		}
 
-		if ($inline)
-		{
-			return '<script type="text/javascript" charset="utf-8">/*<![CDATA[ */'.$r.'// ]]></script>';
-		}
-		else
-		{
-			return $r;
-		}
+		return ($inline) ? '<script type="text/javascript" charset="utf-8">/*<![CDATA[ */'.$r.'// ]]></script>' : $r;
 	}
 }
 
@@ -144,18 +132,13 @@
 	function get_clickable_smileys($image_url, $alias = '', $smileys = NULL)
 	{
 		// For backward compatibility with js_insert_smiley
-
 		if (is_array($alias))
 		{
 			$smileys = $alias;
 		}
-
-		if ( ! is_array($smileys))
+		elseif (FALSE === ($smileys = _get_smiley_array()))
 		{
-			if (FALSE === ($smileys = _get_smiley_array()))
-			{
-				return $smileys;
-			}
+			return $smileys;
 		}
 
 		// Add a trailing slash to the file path if needed
@@ -165,7 +148,7 @@
 		foreach ($smileys as $key => $val)
 		{
 			// Keep duplicates from being used, which can happen if the
-			// mapping array contains multiple identical replacements.  For example:
+			// mapping array contains multiple identical replacements. For example:
 			// :-) and :) might be replaced with the same image so both smileys
 			// will be in the array.
 			if (isset($used[$smileys[$key][0]]))
@@ -173,8 +156,7 @@
 				continue;
 			}
 
-			$link[] = "<a href=\"javascript:void(0);\" onclick=\"insert_smiley('".$key."', '".$alias."')\"><img src=\"".$image_url.$smileys[$key][0]."\" width=\"".$smileys[$key][1]."\" height=\"".$smileys[$key][2]."\" alt=\"".$smileys[$key][3]."\" style=\"border:0;\" /></a>";
-
+			$link[] = '<a href="javascript:void(0);" onclick="insert_smiley(\''.$key.'\', \''.$alias.'\')"><img src="'.$image_url.$smileys[$key][0].'" alt="'.$smileys[$key][3].'" style="width: '.$smileys[$key][1].'; height: '.$smileys[$key][2].'; border: 0;" /></a>';
 			$used[$smileys[$key][0]] = TRUE;
 		}
 
@@ -197,25 +179,17 @@
 {
 	function parse_smileys($str = '', $image_url = '', $smileys = NULL)
 	{
-		if ($image_url == '')
+		if ($image_url == '' OR ( ! is_array($smileys) && FALSE === ($smileys = _get_smiley_array())))
 		{
 			return $str;
 		}
 
-		if ( ! is_array($smileys))
-		{
-			if (FALSE === ($smileys = _get_smiley_array()))
-			{
-				return $str;
-			}
-		}
-
 		// Add a trailing slash to the file path if needed
-		$image_url = preg_replace("/(.+?)\/*$/", "\\1/",  $image_url);
+		$image_url = rtrim($image_url, '/').'/';
 
 		foreach ($smileys as $key => $val)
 		{
-			$str = str_replace($key, "<img src=\"".$image_url.$smileys[$key][0]."\" width=\"".$smileys[$key][1]."\" height=\"".$smileys[$key][2]."\" alt=\"".$smileys[$key][3]."\" style=\"border:0;\" />", $str);
+			$str = str_replace($key, '<img src="'.$image_url.$smileys[$key][0].'" alt="'.$smileys[$key][3].'" style="width: '.$smileys[$key][1].'; height: '.$smileys[$key][2].'; border: 0;" />', $str);
 		}
 
 		return $str;
@@ -244,12 +218,7 @@
 			include(APPPATH.'config/smileys.php');
 		}
 
-		if (isset($smileys) && is_array($smileys))
-		{
-			return $smileys;
-		}
-
-		return FALSE;
+		return (isset($smileys) && is_array($smileys)) ? $smileys : FALSE;
 	}
 }
 
diff --git a/system/helpers/string_helper.php b/system/helpers/string_helper.php
index aed35c1..a6a6b48 100644
--- a/system/helpers/string_helper.php
+++ b/system/helpers/string_helper.php
@@ -73,16 +73,14 @@
 {
 	function strip_slashes($str)
 	{
-		if (is_array($str))
+		if ( ! is_array($str))
 		{
-			foreach ($str as $key => $val)
-			{
-				$str[$key] = strip_slashes($val);
-			}
+			return stripslashes($str);
 		}
-		else
+
+		foreach ($str as $key => $val)
 		{
-			$str = stripslashes($str);
+			$str[$key] = strip_slashes($val);
 		}
 
 		return $str;
@@ -173,13 +171,7 @@
 	function reduce_multiples($str, $character = ',', $trim = FALSE)
 	{
 		$str = preg_replace('#'.preg_quote($character, '#').'{2,}#', $character, $str);
-
-		if ($trim === TRUE)
-		{
-			return trim($str, $character);
-		}
-
-		return $str;
+		return ($trim === TRUE) ? trim($str, $character) : $str;
 	}
 }
 
@@ -198,44 +190,36 @@
 {
 	function random_string($type = 'alnum', $len = 8)
 	{
-		switch($type)
+		switch ($type)
 		{
-			case 'basic'	: return mt_rand();
-				break;
-			case 'alnum'	:
-			case 'numeric'	:
-			case 'nozero'	:
-			case 'alpha'	:
-
-					switch ($type)
-					{
-						case 'alpha'	:	$pool = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
-							break;
-						case 'alnum'	:	$pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
-							break;
-						case 'numeric'	:	$pool = '0123456789';
-							break;
-						case 'nozero'	:	$pool = '123456789';
-							break;
-					}
-
-					$str = substr(str_shuffle(str_repeat($pool, ceil($len/strlen($pool)))),0,$len);
-
-					return $str;
-				break;
-			case 'unique'	:
-			case 'md5'		:
-
-						return md5(uniqid(mt_rand()));
-				break;
-			case 'encrypt'	:
-			case 'sha1'	:
-
-						$CI =& get_instance();
-						$CI->load->helper('security');
-
-						return do_hash(uniqid(mt_rand(), TRUE), 'sha1');
-				break;
+			case 'basic':
+				return mt_rand();
+			case 'alnum':
+			case 'numeric':
+			case 'nozero':
+			case 'alpha':
+				switch ($type)
+				{
+					case 'alpha':
+						$pool = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
+						break;
+					case 'alnum':
+						$pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
+						break;
+					case 'numeric':
+						$pool = '0123456789';
+						break;
+					case 'nozero':
+						$pool = '123456789';
+						break;
+				}
+				return substr(str_shuffle(str_repeat($pool, ceil($len / strlen($pool)))), 0, $len);
+			case 'unique':
+			case 'md5':
+				return md5(uniqid(mt_rand()));
+			case 'encrypt':
+			case 'sha1':
+				return sha1(uniqid(mt_rand(), TRUE));
 		}
 	}
 }
@@ -255,7 +239,6 @@
 	function increment_string($str, $separator = '_', $first = 1)
 	{
 		preg_match('/(.+)'.$separator.'([0-9]+)$/', $str, $match);
-
 		return isset($match[2]) ? $match[1].$separator.($match[2] + 1) : $str.$separator.$first;
 	}
 }
@@ -267,7 +250,7 @@
  *
  * Allows strings to be alternated. See docs...
  *
- * @param	string (as many parameters as needed)
+ * @param	string	(as many parameters as needed)
  * @return	string
  */
 if ( ! function_exists('alternator'))
diff --git a/system/helpers/text_helper.php b/system/helpers/text_helper.php
index cc501c3..c1c0eb9 100644
--- a/system/helpers/text_helper.php
+++ b/system/helpers/text_helper.php
@@ -58,7 +58,7 @@
 
 		preg_match('/^\s*+(?:\S++\s*+){1,'.(int) $limit.'}/', $str, $matches);
 
-		if (strlen($str) == strlen($matches[0]))
+		if (strlen($str) === strlen($matches[0]))
 		{
 			$end_char = '';
 		}
@@ -72,7 +72,7 @@
 /**
  * Character Limiter
  *
- * Limits the string based on the character count.  Preserves complete words
+ * Limits the string based on the character count. Preserves complete words
  * so the character count may not be exactly as specified.
  *
  * @param	string
@@ -89,14 +89,14 @@
 			return $str;
 		}
 
-		$str = preg_replace("/\s+/", ' ', str_replace(array("\r\n", "\r", "\n"), ' ', $str));
+		$str = preg_replace('/\s+/', ' ', str_replace(array("\r\n", "\r", "\n"), ' ', $str));
 
 		if (strlen($str) <= $n)
 		{
 			return $str;
 		}
 
-		$out = "";
+		$out = '';
 		foreach (explode(' ', trim($str)) as $val)
 		{
 			$out .= $val.' ';
@@ -104,7 +104,7 @@
 			if (strlen($out) >= $n)
 			{
 				$out = trim($out);
-				return (strlen($out) == strlen($str)) ? $out : $out.$end_char;
+				return (strlen($out) === strlen($str)) ? $out : $out.$end_char;
 			}
 		}
 	}
@@ -138,7 +138,7 @@
 					If the $temp array has a value but we have moved on, then it seems only
 					fair that we output that entity and restart $temp before continuing. -Paul
 				*/
-				if (count($temp) == 1)
+				if (count($temp) === 1)
 				{
 					$out  .= '&#'.array_shift($temp).';';
 					$count = 1;
@@ -148,16 +148,18 @@
 			}
 			else
 			{
-				if (count($temp) == 0)
+				if (count($temp) === 0)
 				{
 					$count = ($ordinal < 224) ? 2 : 3;
 				}
 
 				$temp[] = $ordinal;
 
-				if (count($temp) == $count)
+				if (count($temp) === $count)
 				{
-					$number = ($count == 3) ? (($temp['0'] % 16) * 4096) + (($temp['1'] % 64) * 64) + ($temp['2'] % 64) : (($temp['0'] % 32) * 64) + ($temp['1'] % 64);
+					$number = ($count === 3)
+							? (($temp[0] % 16) * 4096) + (($temp[1] % 64) * 64) + ($temp[2] % 64)
+							: (($temp[0] % 32) * 64) + ($temp[1] % 64);
 
 					$out .= '&#'.$number.';';
 					$count = 1;
@@ -187,10 +189,9 @@
 	{
 		if (preg_match_all('/\&#(\d+)\;/', $str, $matches))
 		{
-			for ($i = 0, $s = count($matches['0']); $i < $s; $i++)
+			for ($i = 0, $s = count($matches[0]); $i < $s; $i++)
 			{
-				$digits = $matches['1'][$i];
-
+				$digits = $matches[1][$i];
 				$out = '';
 
 				if ($digits < 128)
@@ -200,25 +201,24 @@
 				}
 				elseif ($digits < 2048)
 				{
-					$out .= chr(192 + (($digits - ($digits % 64)) / 64));
-					$out .= chr(128 + ($digits % 64));
+					$out .= chr(192 + (($digits - ($digits % 64)) / 64)).chr(128 + ($digits % 64));
 				}
 				else
 				{
-					$out .= chr(224 + (($digits - ($digits % 4096)) / 4096));
-					$out .= chr(128 + ((($digits % 4096) - ($digits % 64)) / 64));
-					$out .= chr(128 + ($digits % 64));
+					$out .= chr(224 + (($digits - ($digits % 4096)) / 4096))
+						.chr(128 + ((($digits % 4096) - ($digits % 64)) / 64))
+						.chr(128 + ($digits % 64));
 				}
 
-				$str = str_replace($matches['0'][$i], $out, $str);
+				$str = str_replace($matches[0][$i], $out, $str);
 			}
 		}
 
 		if ($all)
 		{
-			$str = str_replace(array("&amp;", "&lt;", "&gt;", "&quot;", "&apos;", "&#45;"),
-								array("&","<",">","\"", "'", "-"),
-								$str);
+			return str_replace(array('&amp;', '&lt;', '&gt;', '&quot;', '&apos;', '&#45;'),
+						array('&', '<', '>', '"', "'", '-'),
+						$str);
 		}
 
 		return $str;
@@ -286,27 +286,33 @@
 {
 	function highlight_code($str)
 	{
-		// The highlight string function encodes and highlights
-		// brackets so we need them to start raw
-		$str = str_replace(array('&lt;', '&gt;'), array('<', '>'), $str);
-
-		// Replace any existing PHP tags to temporary markers so they don't accidentally
-		// break the string out of PHP, and thus, thwart the highlighting.
-		$str = str_replace(array('<?', '?>', '<%', '%>', '\\', '</script>'),
-					array('phptagopen', 'phptagclose', 'asptagopen', 'asptagclose', 'backslashtmp', 'scriptclose'),
+		/* The highlight string function encodes and highlights
+		 * brackets so we need them to start raw.
+		 *
+		 * Also replace any existing PHP tags to temporary markers
+		 * so they don't accidentally break the string out of PHP,
+		 * and thus, thwart the highlighting.
+		 */
+		$str = str_replace(array('&lt;', '&gt;', '<?', '?>', '<%', '%>', '\\', '</script>'),
+					array('<', '>', 'phptagopen', 'phptagclose', 'asptagopen', 'asptagclose', 'backslashtmp', 'scriptclose'),
 					$str);
 
 		// The highlight_string function requires that the text be surrounded
 		// by PHP tags, which we will remove later
-		$str = '<?php '.$str.' ?>'; // <?
-
-		// All the magic happens here, baby!
-		$str = highlight_string($str, TRUE);
+		$str = highlight_string('<?php '.$str.' ?>', TRUE);
 
 		// Remove our artificially added PHP, and the syntax highlighting that came with it
-		$str = preg_replace('/<span style="color: #([A-Z0-9]+)">&lt;\?php(&nbsp;| )/i', '<span style="color: #$1">', $str);
-		$str = preg_replace('/(<span style="color: #[A-Z0-9]+">.*?)\?&gt;<\/span>\n<\/span>\n<\/code>/is', "$1</span>\n</span>\n</code>", $str);
-		$str = preg_replace('/<span style="color: #[A-Z0-9]+"\><\/span>/i', '', $str);
+		$str = preg_replace(array(
+						'/<span style="color: #([A-Z0-9]+)">&lt;\?php(&nbsp;| )/i',
+						'/(<span style="color: #[A-Z0-9]+">.*?)\?&gt;<\/span>\n<\/span>\n<\/code>/is',
+						'/<span style="color: #[A-Z0-9]+"\><\/span>/i'
+					),
+					array(
+						'<span style="color: #$1">',
+						"$1</span>\n</span>\n</code>",
+						''
+					),
+					$str);
 
 		// Replace our markers back to PHP tags.
 		return str_replace(array('phptagopen', 'phptagclose', 'asptagopen', 'asptagclose', 'backslashtmp', 'scriptclose'),
@@ -339,7 +345,7 @@
 
 		if ($phrase != '')
 		{
-			return preg_replace('/('.preg_quote($phrase, '/').')/i', $tag_open."\\1".$tag_close, $str);
+			return preg_replace('/('.preg_quote($phrase, '/').')/i', $tag_open.'\\1'.$tag_close, $str);
 		}
 
 		return $str;
@@ -358,18 +364,23 @@
 {
 	function convert_accented_characters($str)
 	{
-		if (defined('ENVIRONMENT') && is_file(APPPATH.'config/'.ENVIRONMENT.'/foreign_chars.php'))
-		{
-			include(APPPATH.'config/'.ENVIRONMENT.'/foreign_chars.php');
-		}
-		elseif (is_file(APPPATH.'config/foreign_chars.php'))
-		{
-			include(APPPATH.'config/foreign_chars.php');
-		}
+		global $foreign_characters;
 
-		if ( ! isset($foreign_characters))
+		if ( ! isset($foreign_characters) OR ! is_array($foreign_characters))
 		{
-			return $str;
+			if (defined('ENVIRONMENT') && is_file(APPPATH.'config/'.ENVIRONMENT.'/foreign_chars.php'))
+			{
+				include(APPPATH.'config/'.ENVIRONMENT.'/foreign_chars.php');
+			}
+			elseif (is_file(APPPATH.'config/foreign_chars.php'))
+			{
+				include(APPPATH.'config/foreign_chars.php');
+			}
+
+			if ( ! isset($foreign_characters) OR ! is_array($foreign_characters))
+			{
+				return $str;
+			}
 		}
 
 		return preg_replace(array_keys($foreign_characters), array_values($foreign_characters), $str);
@@ -381,7 +392,7 @@
 /**
  * Word Wrap
  *
- * Wraps text at the specified character.  Maintains the integrity of words.
+ * Wraps text at the specified character. Maintains the integrity of words.
  * Anything placed between {unwrap}{/unwrap} will not be word wrapped, nor
  * will URLs.
  *
@@ -391,14 +402,16 @@
  */
 if ( ! function_exists('word_wrap'))
 {
-	function word_wrap($str, $charlim = '76')
+	function word_wrap($str, $charlim = 76)
 	{
-		// Se the character limit
+		// Set the character limit
 		if ( ! is_numeric($charlim))
+		{
 			$charlim = 76;
+		}
 
 		// Reduce multiple spaces
-		$str = preg_replace("| +|", " ", $str);
+		$str = preg_replace('| +|', ' ', $str);
 
 		// Standardize newlines
 		if (strpos($str, "\r") !== FALSE)
@@ -409,22 +422,22 @@
 		// If the current word is surrounded by {unwrap} tags we'll
 		// strip the entire chunk and replace it with a marker.
 		$unwrap = array();
-		if (preg_match_all("|(\{unwrap\}.+?\{/unwrap\})|s", $str, $matches))
+		if (preg_match_all('|(\{unwrap\}.+?\{/unwrap\})|s', $str, $matches))
 		{
-			for ($i = 0; $i < count($matches['0']); $i++)
+			for ($i = 0, $c = count($matches[0]); $i < $c; $i++)
 			{
-				$unwrap[] = $matches['1'][$i];
-				$str = str_replace($matches['1'][$i], "{{unwrapped".$i."}}", $str);
+				$unwrap[] = $matches[1][$i];
+				$str = str_replace($matches[1][$i], '{{unwrapped'.$i.'}}', $str);
 			}
 		}
 
 		// Use PHP's native function to do the initial wordwrap.
 		// We set the cut flag to FALSE so that any individual words that are
-		// too long get left alone.  In the next step we'll deal with them.
+		// too long get left alone. In the next step we'll deal with them.
 		$str = wordwrap($str, $charlim, "\n", FALSE);
 
 		// Split the string into individual lines of text and cycle through them
-		$output = "";
+		$output = '';
 		foreach (explode("\n", $str) as $line)
 		{
 			// Is the line within the allowed character count?
@@ -439,28 +452,26 @@
 			while ((strlen($line)) > $charlim)
 			{
 				// If the over-length word is a URL we won't wrap it
-				if (preg_match("!\[url.+\]|://|wwww.!", $line))
+				if (preg_match('!\[url.+\]|://|wwww.!', $line))
 				{
 					break;
 				}
 
 				// Trim the word down
-				$temp .= substr($line, 0, $charlim-1);
-				$line = substr($line, $charlim-1);
+				$temp .= substr($line, 0, $charlim - 1);
+				$line = substr($line, $charlim - 1);
 			}
 
 			// If $temp contains data it means we had to split up an over-length
 			// word into smaller chunks so we'll add it back to our current line
 			if ($temp != '')
 			{
-				$output .= $temp."\n".$line;
+				$output .= $temp."\n".$line."\n";
 			}
 			else
 			{
-				$output .= $line;
+				$output .= $line."\n";
 			}
-
-			$output .= "\n";
 		}
 
 		// Put our markers back
@@ -468,14 +479,12 @@
 		{
 			foreach ($unwrap as $key => $val)
 			{
-				$output = str_replace("{{unwrapped".$key."}}", $val, $output);
+				$output = str_replace('{{unwrapped'.$key.'}}', $val, $output);
 			}
 		}
 
-		// Remove the unwrap tags
-		$output = str_replace(array('{unwrap}', '{/unwrap}'), '', $output);
-
-		return $output;
+		// Remove the unwrap tags and return
+		return str_replace(array('{unwrap}', '{/unwrap}'), '', $output);
 	}
 }
 
@@ -506,7 +515,6 @@
 		}
 
 		$beg = substr($str, 0, floor($max_length * $position));
-
 		$position = ($position > 1) ? 1 : $position;
 
 		if ($position === 1)
diff --git a/system/libraries/Cache/Cache.php b/system/libraries/Cache/Cache.php
index f982416..0493d5a 100644
--- a/system/libraries/Cache/Cache.php
+++ b/system/libraries/Cache/Cache.php
@@ -36,16 +36,38 @@
  */
 class CI_Cache extends CI_Driver_Library {
 
-	protected $valid_drivers 	= array(
-						'cache_apc',
-						'cache_file',
-						'cache_memcached',
-						'cache_dummy',
-						'cache_wincache'
-					);
+	/**
+	 * Valid cache drivers
+	 *
+	 * @var array
+	 */
+	protected $valid_drivers = array(
+		'cache_apc',
+		'cache_file',
+		'cache_memcached',
+		'cache_dummy',
+		'cache_wincache'
+	);
 
-	protected $_cache_path		= NULL;	// Path of cache files (if file-based cache)
-	protected $_adapter		= 'dummy';
+	/**
+	 * Path of cache files (if file-based cache)
+	 *
+	 * @var string
+	 */
+	protected $_cache_path = NULL;
+	
+	/**
+	 * Reference to the driver
+	 *
+	 * @var mixed
+	 */
+	protected $_adapter = 'dummy';
+	
+	/**
+	 * Fallback driver
+	 *
+	 * @param string
+	 */
 	protected $_backup_driver;
 
 	/**
@@ -59,9 +81,9 @@
 	public function __construct($config = array())
 	{
 		$default_config = array(
-				'adapter',
-				'memcached'
-			);
+			'adapter',
+			'memcached'
+		);
 
 		foreach ($default_config as $key)
 		{
diff --git a/system/libraries/Cache/drivers/Cache_apc.php b/system/libraries/Cache/drivers/Cache_apc.php
index 59ab675..c85034f 100644
--- a/system/libraries/Cache/drivers/Cache_apc.php
+++ b/system/libraries/Cache/drivers/Cache_apc.php
@@ -75,7 +75,7 @@
 	 * Delete from Cache
 	 *
 	 * @param	mixed	unique identifier of the item in the cache
-	 * @param	bool	true on success/false on failure
+	 * @return	bool	true on success/false on failure
 	 */
 	public function delete($id)
 	{
diff --git a/system/libraries/Cache/drivers/Cache_dummy.php b/system/libraries/Cache/drivers/Cache_dummy.php
index e8b791c..3f2b4b9 100644
--- a/system/libraries/Cache/drivers/Cache_dummy.php
+++ b/system/libraries/Cache/drivers/Cache_dummy.php
@@ -70,7 +70,7 @@
 	 * Delete from Cache
 	 *
 	 * @param	mixed	unique identifier of the item in the cache
-	 * @param	bool	TRUE, simulating success
+	 * @return	bool	TRUE, simulating success
 	 */
 	public function delete($id)
 	{
diff --git a/system/libraries/Cache/drivers/Cache_file.php b/system/libraries/Cache/drivers/Cache_file.php
index dd27aa9..ec41952 100644
--- a/system/libraries/Cache/drivers/Cache_file.php
+++ b/system/libraries/Cache/drivers/Cache_file.php
@@ -36,8 +36,16 @@
  */
 class CI_Cache_file extends CI_Driver {
 
+	/**
+	 * Directory in which to save cache files
+	 *
+	 * @var string
+	 */
 	protected $_cache_path;
 
+	/**
+	 * Initialize file-based cache
+	 */
 	public function __construct()
 	{
 		$CI =& get_instance();
@@ -86,10 +94,10 @@
 	public function save($id, $data, $ttl = 60)
 	{
 		$contents = array(
-				'time'		=> time(),
-				'ttl'		=> $ttl,
-				'data'		=> $data
-			);
+			'time'		=> time(),
+			'ttl'		=> $ttl,
+			'data'		=> $data
+		);
 
 		if (write_file($this->_cache_path.$id, serialize($contents)))
 		{
diff --git a/system/libraries/Cache/drivers/Cache_memcached.php b/system/libraries/Cache/drivers/Cache_memcached.php
index 4cd5f3d..813df4b 100644
--- a/system/libraries/Cache/drivers/Cache_memcached.php
+++ b/system/libraries/Cache/drivers/Cache_memcached.php
@@ -36,15 +36,25 @@
  */
 class CI_Cache_memcached extends CI_Driver {
 
-	protected $_memcached;	// Holds the memcached object
+	/**
+	 * Holds the memcached object
+	 *
+	 * @var object
+	 */
+	protected $_memcached;
 
+	/**
+	 * Memcached configuration
+	 *
+	 * @var array
+	 */
 	protected $_memcache_conf	= array(
-					'default' => array(
-						'default_host'		=> '127.0.0.1',
-						'default_port'		=> 11211,
-						'default_weight'	=> 1
-					)
-				);
+		'default' => array(
+			'default_host'		=> '127.0.0.1',
+			'default_port'		=> 11211,
+			'default_weight'	=> 1
+		)
+	);
 
 	/**
 	 * Fetch from cache
diff --git a/system/libraries/Cache/drivers/Cache_wincache.php b/system/libraries/Cache/drivers/Cache_wincache.php
index b32e66a..74048d5 100644
--- a/system/libraries/Cache/drivers/Cache_wincache.php
+++ b/system/libraries/Cache/drivers/Cache_wincache.php
@@ -78,7 +78,7 @@
 	 * Delete from Cache
 	 *
 	 * @param	mixed	unique identifier of the item in the cache
-	 * @param	bool	true on success/false on failure
+	 * @return	bool	true on success/false on failure
 	 */
 	public function delete($id)
 	{
diff --git a/system/libraries/Calendar.php b/system/libraries/Calendar.php
index b6f145d..4db754f 100644
--- a/system/libraries/Calendar.php
+++ b/system/libraries/Calendar.php
@@ -38,14 +38,60 @@
  */
 class CI_Calendar {
 
+	/**
+	 * Reference to CodeIgniter instance
+	 *
+	 * @var object
+	 */
 	protected $CI;
-	public $lang;
+	
+	/**
+	 * Current local time
+	 *
+	 * @var int
+	 */
 	public $local_time;
+	
+	/**
+	 * Calendar layout template
+	 *
+	 * @var string
+	 */
 	public $template		= '';
+	
+	/**
+	 * Day of the week to start the calendar on
+	 *
+	 * @var string
+	 */
 	public $start_day		= 'sunday';
+	
+	/**
+	 * How to display months
+	 *
+	 * @var string
+	 */
 	public $month_type		= 'long';
+	
+	/**
+	 * How to display names of days
+	 *
+	 * @var string
+	 */
 	public $day_type		= 'abr';
+	
+	/**
+	 * Whether to show next/prev month links
+	 *
+	 * @var bool
+	 */
 	public $show_next_prev	= FALSE;
+	
+	/**
+	 * Url base to use for next/prev month links
+	 *
+	 * @var bool
+	 */
 	public $next_prev_url	= '';
 
 	/**
@@ -403,28 +449,28 @@
 	public function default_template()
 	{
 		return  array (
-						'table_open'				=> '<table border="0" cellpadding="4" cellspacing="0">',
-						'heading_row_start'			=> '<tr>',
-						'heading_previous_cell'		=> '<th><a href="{previous_url}">&lt;&lt;</a></th>',
-						'heading_title_cell'		=> '<th colspan="{colspan}">{heading}</th>',
-						'heading_next_cell'			=> '<th><a href="{next_url}">&gt;&gt;</a></th>',
-						'heading_row_end'			=> '</tr>',
-						'week_row_start'			=> '<tr>',
-						'week_day_cell'				=> '<td>{week_day}</td>',
-						'week_row_end'				=> '</tr>',
-						'cal_row_start'				=> '<tr>',
-						'cal_cell_start'			=> '<td>',
-						'cal_cell_start_today'		=> '<td>',
-						'cal_cell_content'			=> '<a href="{content}">{day}</a>',
-						'cal_cell_content_today'	=> '<a href="{content}"><strong>{day}</strong></a>',
-						'cal_cell_no_content'		=> '{day}',
-						'cal_cell_no_content_today'	=> '<strong>{day}</strong>',
-						'cal_cell_blank'			=> '&nbsp;',
-						'cal_cell_end'				=> '</td>',
-						'cal_cell_end_today'		=> '</td>',
-						'cal_row_end'				=> '</tr>',
-						'table_close'				=> '</table>'
-					);
+			'table_open'				=> '<table border="0" cellpadding="4" cellspacing="0">',
+			'heading_row_start'			=> '<tr>',
+			'heading_previous_cell'		=> '<th><a href="{previous_url}">&lt;&lt;</a></th>',
+			'heading_title_cell'		=> '<th colspan="{colspan}">{heading}</th>',
+			'heading_next_cell'			=> '<th><a href="{next_url}">&gt;&gt;</a></th>',
+			'heading_row_end'			=> '</tr>',
+			'week_row_start'			=> '<tr>',
+			'week_day_cell'				=> '<td>{week_day}</td>',
+			'week_row_end'				=> '</tr>',
+			'cal_row_start'				=> '<tr>',
+			'cal_cell_start'			=> '<td>',
+			'cal_cell_start_today'		=> '<td>',
+			'cal_cell_content'			=> '<a href="{content}">{day}</a>',
+			'cal_cell_content_today'	=> '<a href="{content}"><strong>{day}</strong></a>',
+			'cal_cell_no_content'		=> '{day}',
+			'cal_cell_no_content_today'	=> '<strong>{day}</strong>',
+			'cal_cell_blank'			=> '&nbsp;',
+			'cal_cell_end'				=> '</td>',
+			'cal_cell_end_today'		=> '</td>',
+			'cal_row_end'				=> '</tr>',
+			'table_close'				=> '</table>'
+		);
 	}
 
 	// --------------------------------------------------------------------
diff --git a/system/libraries/Cart.php b/system/libraries/Cart.php
index ca7be55..eee1235 100644
--- a/system/libraries/Cart.php
+++ b/system/libraries/Cart.php
@@ -36,19 +36,53 @@
  */
 class CI_Cart {
 
-	// These are the regular expression rules that we use to validate the product ID and product name
-	public $product_id_rules	= '\.a-z0-9_-'; // alpha-numeric, dashes, underscores, or periods
-	public $product_name_rules	= '\.\:\-_ a-z0-9'; // alpha-numeric, dashes, underscores, colons or periods
-	public $product_name_safe	= TRUE; // only allow safe product names
+	/**
+	 * These are the regular expression rules that we use to validate the product ID and product name
+	 * alpha-numeric, dashes, underscores, or periods
+	 * 
+	 * @var string
+	 */
+	public $product_id_rules	= '\.a-z0-9_-';
+	
+	/**
+	 * These are the regular expression rules that we use to validate the product ID and product name
+	 * alpha-numeric, dashes, underscores, colons or periods
+	 *
+	 * @var string
+	 */
+	public $product_name_rules	= '\.\:\-_ a-z0-9';
+	
+	/**
+	 * only allow safe product names
+	 *
+	 * @var bool
+	 */
+	public $product_name_safe	= TRUE;
 
+	// --------------------------------------------------------------------------
 	// Protected variables. Do not change!
+	// --------------------------------------------------------------------------
+	
+	/**
+	 * Reference to CodeIgniter instance
+	 *
+	 * @var object
+	 */
 	protected $CI;
+	
+	/**
+	 * Contents of the cart
+	 *
+	 * @var array
+	 */
 	protected $_cart_contents	= array();
 
 	/**
 	 * Shopping Class Constructor
 	 *
 	 * The constructor loads the Session class, used to store the shopping cart contents.
+	 *
+	 * @param	array
 	 */
 	public function __construct($params = array())
 	{
@@ -245,7 +279,6 @@
 	 * product ID and quantity for each item.
 	 *
 	 * @param	array
-	 * @param	string
 	 * @return	bool
 	 */
 	public function update($items = array())
@@ -396,6 +429,7 @@
 	 *
 	 * Removes an item from the cart
 	 *
+	 * @param	int
 	 * @return	bool
 	 */
 	 public function remove($rowid)
@@ -427,6 +461,7 @@
 	 *
 	 * Returns the entire cart array
 	 *
+	 * @param	bool
 	 * @return	array
 	 */
 	public function contents($newest_first = FALSE)
@@ -449,6 +484,7 @@
 	 * Returns TRUE if the rowid passed to this function correlates to an item
 	 * that has options associated with it.
 	 *
+	 * @param	mixed
 	 * @return	bool
 	 */
 	public function has_options($rowid = '')
diff --git a/system/libraries/Driver.php b/system/libraries/Driver.php
index f409f47..b1fff15 100644
--- a/system/libraries/Driver.php
+++ b/system/libraries/Driver.php
@@ -39,11 +39,27 @@
  */
 class CI_Driver_Library {
 
-	protected $valid_drivers	= array();
+	/**
+	 * Array of drivers that are available to use with the driver class
+	 *
+	 * @var array
+	 */
+	protected $valid_drivers = array();
+	
+	/**
+	 * Name of the current class - usually the driver class
+	 *
+	 * @var string
+	 */
 	protected static $lib_name;
 
-	// The first time a child is used it won't exist, so we instantiate it
-	// subsequents calls will go straight to the proper child.
+	/**
+	 * The first time a child is used it won't exist, so we instantiate it
+	 * subsequents calls will go straight to the proper child.
+	 *
+	 * @param mixed $child
+	 * @return mixed
+	 */
 	public function __get($child)
 	{
 		if ( ! isset($this->lib_name))
@@ -100,6 +116,8 @@
 
 }
 
+// --------------------------------------------------------------------------
+
 /**
  * CodeIgniter Driver Class
  *
@@ -114,11 +132,32 @@
  */
 class CI_Driver {
 
+	/**
+	 * Instance of the parent class
+	 *
+	 * @var object
+	 */
 	protected $_parent;
 
+	/**
+	 * List of methods in the parent class
+	 *
+	 * @var array
+	 */
 	protected $_methods = array();
+	
+	/**
+	 * List of properties in the parent class
+	 *
+	 * @var array
+	 */
 	protected $_properties = array();
 
+	/**
+	 * Array of methods and properties for the parent class(es)
+	 *
+	 * @var array
+	 */
 	protected static $_reflections = array();
 
 	/**
diff --git a/system/libraries/Encrypt.php b/system/libraries/Encrypt.php
index 54b5bf7..17437c1 100644
--- a/system/libraries/Encrypt.php
+++ b/system/libraries/Encrypt.php
@@ -38,12 +38,44 @@
  */
 class CI_Encrypt {
 
+	/**
+	 * Reference to the user's encryption key
+	 *
+	 * @var string
+	 */
 	public $encryption_key		= '';
+	
+	/**
+	 * Type of hash operation
+	 * 
+	 * @var string
+	 */
 	protected $_hash_type		= 'sha1';
+	
+	/**
+	 * Flag for the existance of mcrypt
+	 *
+	 * @var bool
+	 */
 	protected $_mcrypt_exists	= FALSE;
+	
+	/**
+	 * Current cipher to be used with mcrypt
+	 *
+	 * @var string
+	 */
 	protected $_mcrypt_cipher;
+	
+	/**
+	 * Method for encrypting/decrypting data
+	 *
+	 * @var int
+	 */
 	protected $_mcrypt_mode;
 
+	/**
+	 * Initialize Encryption class
+	 */
 	public function __construct()
 	{
 		$this->_mcrypt_exists = function_exists('mcrypt_encrypt');
@@ -349,7 +381,8 @@
 	 *
 	 * Function description
 	 *
-	 * @param	string
+	 * @param	string	$data
+	 * @param	string	$key
 	 * @return	string
 	 */
 	protected function _remove_cipher_noise($data, $key)
diff --git a/system/libraries/Form_validation.php b/system/libraries/Form_validation.php
index 22bc7dd..5547c6a 100644
--- a/system/libraries/Form_validation.php
+++ b/system/libraries/Form_validation.php
@@ -36,17 +36,81 @@
  */
 class CI_Form_validation {
 
+	/**
+	 * Reference to the CodeIgniter instance
+	 *
+	 * @var object
+	 */
 	protected $CI;
-	protected $_field_data		= array();
-	protected $_config_rules	= array();
+	
+	/**
+	 * Validation data for the current form submission
+	 *
+	 * @var array
+	 */
+	protected $_field_data = array();
+	
+	/**
+	 * Validation rules for the current form
+	 *
+	 * @var array
+	 */
+	protected $_config_rules = array();
+	
+	/**
+	 * Array of validation errors
+	 *
+	 * @var array
+	 */
 	protected $_error_array		= array();
+	
+	/**
+	 * Array of custom error messages
+	 *
+	 * @var array
+	 */
 	protected $_error_messages	= array();
+	
+	/**
+	 * Start tag for error wrapping
+	 *
+	 * @var string
+	 */
 	protected $_error_prefix	= '<p>';
+	
+	/**
+	 * End tag for error wrapping
+	 * 
+	 * @var string
+	 */
 	protected $_error_suffix	= '</p>';
+	
+	/**
+	 * Custom error message
+	 *
+	 * @var string
+	 */
 	protected $error_string		= '';
+	
+	/**
+	 * Whether the form data has been validated as safe
+	 *
+	 * @var bool
+	 */
 	protected $_safe_form_data	= FALSE;
+	
+	/**
+	 * Custom data to validate
+	 *
+	 * @var array
+	 */
 	protected $validation_data	= array();
 
+	/**
+	 * Initialize Form_Validation class
+	 *
+	 * @param array $rules
+	 */
 	public function __construct($rules = array())
 	{
 		$this->CI =& get_instance();
@@ -86,8 +150,9 @@
 	 * This function takes an array of field names and validation
 	 * rules as input, validates the info, and stores it
 	 *
-	 * @param	mixed
-	 * @param	string
+	 * @param	mixed	$field
+	 * @param	string	$label
+	 * @param	mixed	$rules
 	 * @return	object
 	 */
 	public function set_rules($field, $label = '', $rules = '')
@@ -241,6 +306,8 @@
 	 * Gets the error message associated with a particular field
 	 *
 	 * @param	string	the field name
+	 * @param	string	the html start tag
+	 * @param 	strign	the html end tag
 	 * @return	string
 	 */
 	public function error($field = '', $prefix = '', $suffix = '')
@@ -326,6 +393,7 @@
 	 *
 	 * This function does all the work.
 	 *
+	 * @param	string	$group
 	 * @return	bool
 	 */
 	public function run($group = '')
@@ -768,6 +836,7 @@
 	 *
 	 * @param	string
 	 * @param	string
+	 * @param	bool
 	 * @return	string
 	 */
 	public function set_select($field = '', $value = '', $default = FALSE)
@@ -803,6 +872,7 @@
 	 *
 	 * @param	string
 	 * @param	string
+	 * @param	bool
 	 * @return	string
 	 */
 	public function set_radio($field = '', $value = '', $default = FALSE)
@@ -838,6 +908,7 @@
 	 *
 	 * @param	string
 	 * @param	string
+	 * @param	bool
 	 * @return	string
 	 */
 	public function set_checkbox($field = '', $value = '', $default = FALSE)
@@ -934,7 +1005,7 @@
 
 		return (MB_ENABLED === TRUE)
 			? ($val <= mb_strlen($str))
-			: ($val <= strlen(str));
+			: ($val <= strlen($str));
 	}
 
 	// --------------------------------------------------------------------
@@ -1116,6 +1187,7 @@
 	 * Greater than
 	 *
 	 * @param	string
+	 * @param	int
 	 * @return	bool
 	 */
 	public function greater_than($str, $min)
@@ -1129,6 +1201,7 @@
 	 * Equal to or Greater than
 	 *
 	 * @param	string
+	 * @param	int
 	 * @return	bool
 	 */
 	public function greater_than_equal_to($str, $min)
@@ -1142,6 +1215,7 @@
 	 * Less than
 	 *
 	 * @param	string
+	 * @param	int
 	 * @return	bool
 	 */
 	public function less_than($str, $max)
@@ -1155,6 +1229,7 @@
 	 * Equal to or Less than
 	 *
 	 * @param	string
+	 * @param	int
 	 * @return	bool
 	 */
 	public function less_than_equal_to($str, $max)
diff --git a/system/libraries/Image_lib.php b/system/libraries/Image_lib.php
index 1ab8b23..2469504 100644
--- a/system/libraries/Image_lib.php
+++ b/system/libraries/Image_lib.php
@@ -36,56 +36,335 @@
  */
 class CI_Image_lib {
 
-	public $image_library		= 'gd2';	// Can be:  imagemagick, netpbm, gd, gd2
+	/**
+	 * PHP extension/library to use for image manipulation
+	 * Can be:  imagemagick, netpbm, gd, gd2
+	 *
+	 * @var string
+	 */
+	public $image_library		= 'gd2';
+	
+	/**
+	 * Path to the graphic library (if applicable)
+	 *
+	 * @var string
+	 */
 	public $library_path		= '';
-	public $dynamic_output		= FALSE;	// Whether to send to browser or write to disk
+	
+	/**
+	 * Whether to send to browser or write to disk
+	 *
+	 * @var bool
+	 */
+	public $dynamic_output		= FALSE;
+	
+	/**
+	 * Path to original image
+	 *
+	 * @var string
+	 */
 	public $source_image		= '';
+	
+	/**
+	 * Path to the modified image
+	 *
+	 * @var string
+	 */
 	public $new_image			= '';
+	
+	/**
+	 * Image width
+	 *
+	 * @var int
+	 */
 	public $width				= '';
+	
+	/**
+	 * Image height
+	 *
+	 * @var int
+	 */
 	public $height				= '';
+	
+	/**
+	 * Quality percentage of new image
+	 *
+	 * @var int
+	 */
 	public $quality			= '90';
+	
+	/**
+	 * Whether to create a thumbnail
+	 *
+	 * @var bool
+	 */
 	public $create_thumb		= FALSE;
+	
+	/**
+	 * String to add to thumbnail version of image
+	 *
+	 * @var string
+	 */
 	public $thumb_marker		= '_thumb';
-	public $maintain_ratio		= TRUE;		// Whether to maintain aspect ratio when resizing or use hard values
-	public $master_dim			= 'auto';	// auto, height, or width.  Determines what to use as the master dimension
+	
+	/**
+	 * Whether to maintain aspect ratio when resizing or use hard values
+	 *
+	 * @var bool
+	 */
+	public $maintain_ratio		= TRUE;
+	
+	/**
+	 * auto, height, or width.  Determines what to use as the master dimension
+	 *
+	 * @var string
+	 */
+	public $master_dim			= 'auto';
+	
+	/**
+	 * Angle at to rotate image
+	 *
+	 * @var string
+	 */
 	public $rotation_angle		= '';
+	
+	/**
+	 * X Coordinate for manipulation of the current image
+	 *
+	 * @var int
+	 */
 	public $x_axis				= '';
+	
+	/**
+	 * Y Coordinate for manipulation of the current image
+	 *
+	 * @var int
+	 */
 	public $y_axis				= '';
 
+	// --------------------------------------------------------------------------
 	// Watermark Vars
-	public $wm_text			= '';			// Watermark text if graphic is not used
-	public $wm_type			= 'text';		// Type of watermarking.  Options:  text/overlay
+	// --------------------------------------------------------------------------
+	
+	/**
+	 * Watermark text if graphic is not used
+	 *
+	 * @var string
+	 */
+	public $wm_text			= '';
+	
+	/**
+	 * Type of watermarking.  Options:  text/overlay
+	 *
+	 * @var string
+	 */
+	public $wm_type			= 'text';
+	
+	/**
+	 * Default transparency for watermark
+	 * 
+	 * @var int
+	 */
 	public $wm_x_transp		= 4;
+	
+	/**
+	 * Default transparency for watermark
+	 *
+	 * @var int
+	 */
 	public $wm_y_transp		= 4;
-	public $wm_overlay_path	= '';			// Watermark image path
-	public $wm_font_path		= '';			// TT font
-	public $wm_font_size		= 17;			// Font size (different versions of GD will either use points or pixels)
-	public $wm_vrt_alignment	= 'B';			// Vertical alignment:   T M B
-	public $wm_hor_alignment	= 'C';			// Horizontal alignment: L R C
-	public $wm_padding			= 0;			// Padding around text
-	public $wm_hor_offset		= 0;			// Lets you push text to the right
-	public $wm_vrt_offset		= 0;			// Lets you push  text down
-	protected $wm_font_color		= '#ffffff';	// Text color
-	protected $wm_shadow_color		= '';	// Dropshadow color
-	public $wm_shadow_distance	= 2;			// Dropshadow distance
-	public $wm_opacity			= 50;			// Image opacity: 1 - 100  Only works with image
+	
+	/**
+	 * Watermark image path
+	 * 
+	 * @var string
+	 */
+	public $wm_overlay_path	= '';
+	
+	/**
+	 * TT font
+	 *
+	 * @var string
+	 */
+	public $wm_font_path		= '';
+	
+	/**
+	 * Font size (different versions of GD will either use points or pixels)
+	 *
+	 * @var int
+	 */
+	public $wm_font_size		= 17;
+	
+	/**
+	 * Vertical alignment:   T M B
+	 *
+	 * @var string
+	 */
+	public $wm_vrt_alignment	= 'B';
+	
+	/**
+	 * Horizontal alignment: L R C
+	 *
+	 * @var string
+	 */
+	public $wm_hor_alignment	= 'C';
+	
+	/**
+	 * Padding around text
+	 *
+	 * @var int
+	 */
+	public $wm_padding			= 0;
+	
+	/**
+	 * Lets you push text to the right
+	 *
+	 * @var int
+	 */
+	public $wm_hor_offset		= 0;
+	
+	/**
+	 * Lets you push text down
+	 *
+	 * @var int
+	 */
+	public $wm_vrt_offset		= 0;
+	
+	/**
+	 * Text color
+	 *
+	 * @var string
+	 */
+	protected $wm_font_color		= '#ffffff';
+	
+	/**
+	 * Dropshadow color
+	 *
+	 * @var string
+	 */
+	protected $wm_shadow_color		= '';
+	
+	/**
+	 * Dropshadow distance
+	 *
+	 * @var int
+	 */
+	public $wm_shadow_distance	= 2;
+	
+	/**
+	 * Image opacity: 1 - 100  Only works with image
+	 *
+	 * @var int
+	 */
+	public $wm_opacity			= 50;
 
+	// --------------------------------------------------------------------------
 	// Private Vars
+	// --------------------------------------------------------------------------
+	
+	/**
+	 * Source image folder
+	 *
+	 * @var string
+	 */
 	public $source_folder		= '';
+	
+	/**
+	 * Destination image folder
+	 *
+	 * @var string
+	 */
 	public $dest_folder		= '';
+	
+	/**
+	 * Image mime-type
+	 *
+	 * @var string
+	 */
 	public $mime_type			= '';
+	
+	/**
+	 * Original image width 
+	 *
+	 * @var int
+	 */
 	public $orig_width			= '';
+	
+	/**
+	 * Original image height
+	 *
+	 * @var int
+	 */
 	public $orig_height		= '';
+	
+	/**
+	 * Image format
+	 * 
+	 * @var string
+	 */
 	public $image_type			= '';
+	
+	/**
+	 * Size of current image
+	 *
+	 * @var string
+	 */
 	public $size_str			= '';
+	
+	/**
+	 * Full path to source image
+	 *
+	 * @var string
+	 */
 	public $full_src_path		= '';
+	
+	/**
+	 * Full path to destination image
+	 *
+	 * @var string
+	 */
 	public $full_dst_path		= '';
+	
+	/**
+	 * Name of function to create image
+	 *
+	 * @var string
+	 */
 	public $create_fnc			= 'imagecreatetruecolor';
+	
+	/**
+	 * Name of function to copy image
+	 *
+	 * @var string
+	 */
 	public $copy_fnc			= 'imagecopyresampled';
+	
+	/**
+	 * Error messages
+	 *
+	 * @var array
+	 */
 	public $error_msg			= array();
+	
+	/**
+	 * Whether to have a drop shadow on watermark
+	 *
+	 * @var bool
+	 */
 	protected $wm_use_drop_shadow	= FALSE;
+	
+	/**
+	 * Whether to use truetype fonts
+	 *
+	 * @var bool
+	 */
 	public $wm_use_truetype	= FALSE;
 
+	/**
+	 * Initialize Image Library
+	 *
+	 * @param	array	$props
+	 */
 	public function __construct($props = array())
 	{
 		if (count($props) > 0)
@@ -804,7 +1083,6 @@
 	 * This is a wrapper function that chooses the type
 	 * of watermarking based on the specified preference.
 	 *
-	 * @param	string
 	 * @return	bool
 	 */
 	public function watermark()
@@ -1060,6 +1338,7 @@
 	 * based on the type of image being processed
 	 *
 	 * @param	string
+	 * @param	string
 	 * @return	resource
 	 */
 	public function image_create_gd($path = '', $image_type = '')
@@ -1261,6 +1540,7 @@
 	 * A helper function that gets info about the file
 	 *
 	 * @param	string
+	 * @param	bool
 	 * @return	mixed
 	 */
 	public function get_image_properties($path = '', $return = FALSE)
@@ -1452,6 +1732,7 @@
 	 * Show error messages
 	 *
 	 * @param	string
+	 * @param	string
 	 * @return	string
 	 */
 	public function display_errors($open = '<p>', $close = '</p>')
diff --git a/system/libraries/Javascript.php b/system/libraries/Javascript.php
index 629a3ad..dd2df69 100644
--- a/system/libraries/Javascript.php
+++ b/system/libraries/Javascript.php
@@ -723,7 +723,7 @@
 		{
 			if (is_object($result))
 			{
-				$json_result = $result->result_array();
+				$json_result = is_callable(array($result, 'result_array')) ? $result->result_array() : (array) $result;
 			}
 			elseif (is_array($result))
 			{
diff --git a/system/libraries/Log.php b/system/libraries/Log.php
index 66f9ebf..c10363a 100644
--- a/system/libraries/Log.php
+++ b/system/libraries/Log.php
@@ -36,14 +36,60 @@
  */
 class CI_Log {
 
+	/**
+	 * Path to save log files
+	 *
+	 * @var string
+	 */
 	protected $_log_path;
+	
+	/**
+	 * Level of logging
+	 *
+	 * @var int
+	 */
 	protected $_threshold		= 1;
+	
+	/**
+	 * Highest level of logging
+	 *
+	 * @var int
+	 */
 	protected $_threshold_max	= 0;
+	
+	/**
+	 * Array of threshold levels to log
+	 *
+	 * @var array
+	 */
 	protected $_threshold_array	= array();
+	
+	/**
+	 * Format of timestamp for log files
+	 *
+	 * @var string
+	 */
 	protected $_date_fmt		= 'Y-m-d H:i:s';
+	
+	/**
+	 * Whether or not the logger can write to the log files
+	 *
+	 * @var bool
+	 */
 	protected $_enabled		= TRUE;
+	
+	/**
+	 * Predefined logging levels
+	 *
+	 * @var array
+	 */
 	protected $_levels		= array('ERROR' => 1, 'DEBUG' => 2,  'INFO' => 3, 'ALL' => 4);
 
+	/**
+	 * Initialize Logging class
+	 *
+	 * @return void
+	 */
 	public function __construct()
 	{
 		$config =& get_config();
diff --git a/system/libraries/Migration.php b/system/libraries/Migration.php
index a18fcb9..ce4683f 100644
--- a/system/libraries/Migration.php
+++ b/system/libraries/Migration.php
@@ -39,14 +39,53 @@
  */
 class CI_Migration {
 
+	/**
+	 * Whether the library is enabled
+	 *
+	 * @var bool
+	 */
 	protected $_migration_enabled = FALSE;
+	
+	/**
+	 * Path to migration classes
+	 *
+	 * @var string
+	 */
 	protected $_migration_path = NULL;
+	
+	/**
+	 * Current migration version
+	 *
+	 * @var mixed
+	 */
 	protected $_migration_version = 0;
+	
+	/**
+	 * Database table with migration info
+	 *
+	 * @var string
+	 */
 	protected $_migration_table = 'migrations';
+	
+	/**
+	 * Whether to automatically run migrations
+	 *
+	 * @var bool
+	 */
 	protected $_migration_auto_latest = FALSE;
 
+	/**
+	 * Error message
+	 *
+	 * @var string
+	 */
 	protected $_error_string = '';
 
+	/**
+	 * Initialize Migration Class
+	 *
+	 * @param	array
+	 */
 	public function __construct($config = array())
 	{
 		# Only run this constructor on main library load
diff --git a/system/libraries/Pagination.php b/system/libraries/Pagination.php
index 0fe73d6..3d29118 100644
--- a/system/libraries/Pagination.php
+++ b/system/libraries/Pagination.php
@@ -94,17 +94,16 @@
 		{
 			foreach ($params as $key => $val)
 			{
-				if (isset($this->$key))
+				if ($key === 'anchor_class')
+				{
+					$this->anchor_class = ($val != '') ? 'class="'.$val.'" ' : '';
+				}
+				elseif (isset($this->$key))
 				{
 					$this->$key = $val;
 				}
 			}
 		}
-
-		if ($this->anchor_class != '')
-		{
-			$this->anchor_class = 'class="'.$this->anchor_class.'" ';
-		}
 	}
 
 	// --------------------------------------------------------------------
diff --git a/system/libraries/Parser.php b/system/libraries/Parser.php
index d1b5b76..c40f339 100644
--- a/system/libraries/Parser.php
+++ b/system/libraries/Parser.php
@@ -36,9 +36,25 @@
  */
 class CI_Parser {
 
+	/**
+	 * Left delimeter character for psuedo vars
+	 *
+	 * @var string
+	 */
 	public $l_delim = '{';
+	
+	/**
+	 * Right delimeter character for psuedo vars
+	 *
+	 * @var string
+	 */
 	public $r_delim = '}';
-	public $object;
+	
+	/**
+	 * Reference to CodeIgniter instance
+	 *
+	 * @var object
+	 */
 	protected $CI;
 
 	/**
diff --git a/system/libraries/Profiler.php b/system/libraries/Profiler.php
index 6320ab5..1e86f3c 100644
--- a/system/libraries/Profiler.php
+++ b/system/libraries/Profiler.php
@@ -42,23 +42,45 @@
  */
 class CI_Profiler {
 
+	/**
+	 * List of profiler sections available to show
+	 *
+	 * @var array
+	 */
 	protected $_available_sections = array(
-						'benchmarks',
-						'get',
-						'memory_usage',
-						'post',
-						'uri_string',
-						'controller_info',
-						'queries',
-						'http_headers',
-						'session_data',
-						'config'
-					);
+		'benchmarks',
+		'get',
+		'memory_usage',
+		'post',
+		'uri_string',
+		'controller_info',
+		'queries',
+		'http_headers',
+		'session_data',
+		'config'
+	);
 
+	/**
+	 * Number of queries to show before making the additional queries togglable
+	 *
+	 * @var int
+	 */
 	protected $_query_toggle_count = 25;
 
+	/**
+	 * Reference to the CodeIgniter singleton
+	 *
+	 * @var object
+	 */
 	protected $CI;
 
+	/**
+	 * Constructor
+	 *
+	 * Initialize Profiler
+	 *
+	 * @param array $config
+	 */
 	public function __construct($config = array())
 	{
 		$this->CI =& get_instance();
diff --git a/system/libraries/Session.php b/system/libraries/Session.php
index 3515764..3195f0a 100644
--- a/system/libraries/Session.php
+++ b/system/libraries/Session.php
@@ -36,26 +36,151 @@
  */
 class CI_Session {
 
+	/**
+	 * Whether to encrypt the session cookie
+	 *
+	 * @var bool
+	 */
 	public $sess_encrypt_cookie		= FALSE;
+
+	/**
+	 * Whether to use to the database for session storage
+	 *
+	 * @var bool
+	 */
 	public $sess_use_database		= FALSE;
+
+	/**
+	 * Name of the database table in which to store sessions
+	 *
+	 * @var string
+	 */
 	public $sess_table_name			= '';
+
+	/**
+	 * Length of time (in seconds) for sessions to expire
+	 *
+	 * @var int
+	 */
 	public $sess_expiration			= 7200;
+
+	/**
+	 * Whether to kill session on close of browser window
+	 *
+	 * @var bool
+	 */
 	public $sess_expire_on_close		= FALSE;
+
+	/**
+	 * Whether to match session on ip address
+	 *
+	 * @var bool
+	 */
 	public $sess_match_ip			= FALSE;
+
+	/**
+	 * Whether to match session on user-agent
+	 *
+	 * @var bool
+	 */
 	public $sess_match_useragent		= TRUE;
+
+	/**
+	 * Name of session cookie
+	 *
+	 * @var string
+	 */
 	public $sess_cookie_name		= 'ci_session';
+
+	/**
+	 * Session cookie prefix
+	 *
+	 * @var string
+	 */
 	public $cookie_prefix			= '';
+
+	/**
+	 * Session cookie path
+	 *
+	 * @var string
+	 */
 	public $cookie_path			= '';
+
+	/**
+	 * Session cookie domain
+	 *
+	 * @var string
+	 */
 	public $cookie_domain			= '';
+
+	/**
+	 * Whether to set the cookie only on HTTPS connections
+	 *
+	 * @var bool
+	 */
 	public $cookie_secure			= FALSE;
+
+	/**
+	 * Whether cookie should be allowed only to be sent by the server
+	 *
+	 * @var bool
+	 */
 	public $cookie_httponly 		= FALSE;
+
+	/**
+	 * Interval at which to update session
+	 *
+	 * @var int
+	 */
 	public $sess_time_to_update		= 300;
+
+	/**
+	 * Key with which to encrypt the session cookie
+	 *
+	 * @var string
+	 */
 	public $encryption_key			= '';
+
+	/**
+	 * String to indicate flash data cookies
+	 *
+	 * @var string
+	 */
 	public $flashdata_key			= 'flash';
+
+	/**
+	 * Function to use to get the current time
+	 *
+	 * @var string
+	 */
 	public $time_reference			= 'time';
+
+	/**
+	 * Probablity level of garbage collection of old sessions
+	 *
+	 * @var int
+	 */
 	public $gc_probability			= 5;
+
+	/**
+	 * Session data
+	 *
+	 * @var array
+	 */
 	public $userdata			= array();
+
+	/**
+	 * Reference to CodeIgniter instance
+	 *
+	 * @var object
+	 */
 	public $CI;
+
+	/**
+	 * Current time
+	 *
+	 * @var int
+	 */
 	public $now;
 
 	/**
@@ -63,6 +188,8 @@
 	 *
 	 * The constructor runs the session routines automatically
 	 * whenever the class is instantiated.
+	 *
+	 * @param	array
 	 */
 	public function __construct($params = array())
 	{
@@ -443,6 +570,9 @@
 				$this->cookie_domain,
 				0
 			);
+
+		// Kill session data
+		$this->userdata = array();
 	}
 
 	// --------------------------------------------------------------------
@@ -525,6 +655,7 @@
 	/**
 	 * Delete a session variable from the "userdata" array
 	 *
+	 * @param	array
 	 * @return	void
 	 */
 	public function unset_userdata($newdata = array())
@@ -664,6 +795,7 @@
 	/**
 	 * Write the session cookie
 	 *
+	 * @param	mixed
 	 * @return	void
 	 */
 	protected function _set_cookie($cookie_data = NULL)
diff --git a/system/libraries/Table.php b/system/libraries/Table.php
index 3777d29..2361295 100644
--- a/system/libraries/Table.php
+++ b/system/libraries/Table.php
@@ -38,13 +38,60 @@
  */
 class CI_Table {
 
+	/**
+	 * Data for table rows
+	 *
+	 * @var array
+	 */
 	public $rows		= array();
+	
+	/**
+	 * Data for table heading
+	 *
+	 * @var array
+	 */
 	public $heading		= array();
+	
+	/**
+	 * Whether or not to automatically create the table header
+	 *
+	 * @var bool
+	 */
 	public $auto_heading	= TRUE;
+	
+	/**
+	 * Table caption
+	 *
+	 * @var string
+	 */
 	public $caption		= NULL;
+	
+	/**
+	 * Table layout template 
+	 *
+	 * @var array
+	 */
 	public $template	= NULL;
+	
+	/**
+	 * Newline setting
+	 *
+	 * @var string
+	 */
 	public $newline		= "\n";
+	
+	/**
+	 * Contents of empty cells
+	 *
+	 * @var string
+	 */
 	public $empty_cells	= '';
+	
+	/**
+	 * Callback for custom table layout
+	 *
+	 * @var function
+	 */
 	public $function	= FALSE;
 
 	/**
@@ -93,7 +140,7 @@
 	 * @param	mixed
 	 * @return	void
 	 */
-	public function set_heading()
+	public function set_heading($args = array())
 	{
 		$args = func_get_args();
 		$this->heading = $this->_prep_args($args);
@@ -172,7 +219,7 @@
 	 * @param	mixed
 	 * @return	void
 	 */
-	public function add_row()
+	public function add_row($args = array())
 	{
 		$args = func_get_args();
 		$this->rows[] = $this->_prep_args($args);
@@ -420,6 +467,7 @@
 	 * Set table data from an array
 	 *
 	 * @param	array
+	 * @param	bool
 	 * @return	void
 	 */
 	protected function _set_from_array($data, $set_heading = TRUE)
diff --git a/system/libraries/Typography.php b/system/libraries/Typography.php
index 21bbad0..50bd124 100644
--- a/system/libraries/Typography.php
+++ b/system/libraries/Typography.php
@@ -36,22 +36,46 @@
  */
 class CI_Typography {
 
-	// Block level elements that should not be wrapped inside <p> tags
+	/**
+	 * Block level elements that should not be wrapped inside <p> tags
+	 * 
+	 * @var string
+	 */
 	public $block_elements = 'address|blockquote|div|dl|fieldset|form|h\d|hr|noscript|object|ol|p|pre|script|table|ul';
 
-	// Elements that should not have <p> and <br /> tags within them.
+	/**
+	 * Elements that should not have <p> and <br /> tags within them.
+	 *
+	 * @var string
+	 */
 	public $skip_elements	= 'p|pre|ol|ul|dl|object|table|h\d';
 
-	// Tags we want the parser to completely ignore when splitting the string.
+	/**
+	 * Tags we want the parser to completely ignore when splitting the string.
+	 * 
+	 * @var string
+	 */
 	public $inline_elements = 'a|abbr|acronym|b|bdo|big|br|button|cite|code|del|dfn|em|i|img|ins|input|label|map|kbd|q|samp|select|small|span|strong|sub|sup|textarea|tt|var';
 
-	// array of block level elements that require inner content to be within another block level element
+	/**
+	 * array of block level elements that require inner content to be within another block level element
+	 *
+	 * @var array
+	 */
 	public $inner_block_required = array('blockquote');
 
-	// the last block element parsed
+	/**
+	 * the last block element parsed
+	 *
+	 * @var string
+	 */
 	public $last_block_element = '';
 
-	// whether or not to protect quotes within { curly braces }
+	/**
+	 * whether or not to protect quotes within { curly braces }
+	 *
+	 * @var bool
+	 */
 	public $protect_braced_quotes = FALSE;
 
 	/**
diff --git a/system/libraries/User_agent.php b/system/libraries/User_agent.php
index b8e0d37..0ac605f 100644
--- a/system/libraries/User_agent.php
+++ b/system/libraries/User_agent.php
@@ -38,25 +38,110 @@
  */
 class CI_User_agent {
 
-	public $agent		= NULL;
+	/**
+	 * Current user-agent
+	 *
+	 * @var string
+	 */
+	public $agent = NULL;
 
-	public $is_browser	= FALSE;
-	public $is_robot	= FALSE;
-	public $is_mobile	= FALSE;
+	/**
+	 * Flag for if the user-agent belongs to a browser
+	 *
+	 * @var bool
+	 */
+	public $is_browser = FALSE;
+	
+	/**
+	 * Flag for if the user-agent is a robot
+	 *
+	 * @var bool
+	 */
+	public $is_robot = FALSE;
+	
+	/**
+	 * Flag for if the user-agent is a mobile browser
+	 *
+	 * @var bool
+	 */
+	public $is_mobile = FALSE;
 
-	public $languages	= array();
-	public $charsets	= array();
+	/**
+	 * Languages accepted by the current user agent
+	 *
+	 * @var array
+	 */
+	public $languages = array();
+	
+	/**
+	 * Character sets accepted by the current user agent
+	 *
+	 * @var array
+	 */
+	public $charsets = array();
 
-	public $platforms	= array();
-	public $browsers	= array();
-	public $mobiles		= array();
-	public $robots		= array();
+	/**
+	 * List of platforms to compare against current user agent
+	 *
+	 * @var array
+	 */
+	public $platforms = array();
+	
+	/**
+	 * List of browsers to compare against current user agent
+	 *
+	 * @var array
+	 */
+	public $browsers = array();
+	
+	/**
+	 * List of mobile browsers to compare against current user agent
+	 *
+	 * @var array
+	 */
+	public $mobiles = array();
+	
+	/**
+	 * List of robots to compare against current user agent
+	 *
+	 * @var array
+	 */
+	public $robots = array();
 
-	public $platform	= '';
-	public $browser		= '';
-	public $version		= '';
-	public $mobile		= '';
-	public $robot		= '';
+	/**
+	 * Current user-agent platform
+	 *
+	 * @var string
+	 */
+	public $platform = '';
+	
+	/**
+	 * Current user-agent browser
+	 *
+	 * @var string
+	 */
+	public $browser = '';
+	
+	/**
+	 * Current user-agent version
+	 *
+	 * @var string
+	 */
+	public $version = '';
+	
+	/**
+	 * Current user-agent mobile name
+	 *
+	 * @var string
+	 */
+	public $mobile = '';
+	
+	/**
+	 * Current user-agent robot name
+	 *
+	 * @var string
+	 */
+	public $robot = '';
 
 	/**
 	 * Constructor
@@ -302,6 +387,7 @@
 	/**
 	 * Is Browser
 	 *
+	 * @param	string	$key
 	 * @return	bool
 	 */
 	public function is_browser($key = NULL)
@@ -326,6 +412,7 @@
 	/**
 	 * Is Robot
 	 *
+	 * @param	string	$key
 	 * @return	bool
 	 */
 	public function is_robot($key = NULL)
@@ -350,6 +437,7 @@
 	/**
 	 * Is Mobile
 	 *
+	 * @param	string	$key
 	 * @return	bool
 	 */
 	public function is_mobile($key = NULL)
@@ -503,6 +591,7 @@
 	/**
 	 * Test for a particular language
 	 *
+	 * @param	string	$lang
 	 * @return	bool
 	 */
 	public function accept_lang($lang = 'en')
@@ -515,6 +604,7 @@
 	/**
 	 * Test for a particular character set
 	 *
+	 * @param	string $charset
 	 * @return	bool
 	 */
 	public function accept_charset($charset = 'utf-8')
diff --git a/system/libraries/Xmlrpc.php b/system/libraries/Xmlrpc.php
index fea560c..0d25338 100644
--- a/system/libraries/Xmlrpc.php
+++ b/system/libraries/Xmlrpc.php
@@ -104,24 +104,24 @@
 			);
 
 		// Array of Valid Parents for Various XML-RPC elements
-		$this->valid_parents = array('BOOLEAN'			=> array('VALUE'),
-						'I4'				=> array('VALUE'),
-						'INT'				=> array('VALUE'),
-						'STRING'			=> array('VALUE'),
-						'DOUBLE'			=> array('VALUE'),
-						'DATETIME.ISO8601'	=> array('VALUE'),
-						'BASE64'			=> array('VALUE'),
-						'ARRAY'			=> array('VALUE'),
-						'STRUCT'			=> array('VALUE'),
-						'PARAM'			=> array('PARAMS'),
-						'METHODNAME'		=> array('METHODCALL'),
-						'PARAMS'			=> array('METHODCALL', 'METHODRESPONSE'),
-						'MEMBER'			=> array('STRUCT'),
-						'NAME'				=> array('MEMBER'),
-						'DATA'				=> array('ARRAY'),
-						'FAULT'			=> array('METHODRESPONSE'),
-						'VALUE'			=> array('MEMBER', 'DATA', 'PARAM', 'FAULT')
-					 );
+		$this->valid_parents = array('BOOLEAN' => array('VALUE'),
+			'I4'				=> array('VALUE'),
+			'INT'				=> array('VALUE'),
+			'STRING'			=> array('VALUE'),
+			'DOUBLE'			=> array('VALUE'),
+			'DATETIME.ISO8601'	=> array('VALUE'),
+			'BASE64'			=> array('VALUE'),
+			'ARRAY'			=> array('VALUE'),
+			'STRUCT'			=> array('VALUE'),
+			'PARAM'			=> array('PARAMS'),
+			'METHODNAME'		=> array('METHODCALL'),
+			'PARAMS'			=> array('METHODCALL', 'METHODRESPONSE'),
+			'MEMBER'			=> array('STRUCT'),
+			'NAME'				=> array('MEMBER'),
+			'DATA'				=> array('ARRAY'),
+			'FAULT'			=> array('METHODRESPONSE'),
+			'VALUE'			=> array('MEMBER', 'DATA', 'PARAM', 'FAULT')
+		 );
 
 
 		// XML-RPC Responses
@@ -436,7 +436,7 @@
 	 */
 	public function sendPayload($msg)
 	{
-		$fp = @fsockopen($this->server, $this->port,$this->errno, $this->errstr, $this->timeout);
+		$fp = @fsockopen($this->server, $this->port,$this->errno, $this->errstring, $this->timeout);
 
 		if ( ! is_resource($fp))
 		{
@@ -458,7 +458,7 @@
 			.'Content-Length: '.strlen($msg->payload).$r.$r
 			.$msg->payload;
 
-		if ( ! fputs($fp, $op, strlen($op)))
+		if ( ! fwrite($fp, $op, strlen($op)))
 		{
 			error_log($this->xmlrpcstr['http_error']);
 			return new XML_RPC_Response(0, $this->xmlrpcerr['http_error'], $this->xmlrpcstr['http_error']);
@@ -1076,7 +1076,7 @@
 					// we have an I4/INT
 					// we must check that only 0123456789-<space> are characters here
 					$this->xh[$the_parser]['value'] = preg_match('/^[+-]?[0-9\t ]+$/', $this->xh[$the_parser]['ac'])
-										? (int) $this->xh[$the_parset]['ac']
+										? (int) $this->xh[$the_parser]['ac']
 										: 'ERROR_NON_NUMERIC_FOUND';
 				}
 				$this->xh[$the_parser]['ac'] = '';
diff --git a/system/libraries/Xmlrpcs.php b/system/libraries/Xmlrpcs.php
index 6d270c2..f0c5b48 100644
--- a/system/libraries/Xmlrpcs.php
+++ b/system/libraries/Xmlrpcs.php
@@ -48,12 +48,39 @@
  */
 class CI_Xmlrpcs extends CI_Xmlrpc
 {
-	public $methods		= array();	//array of methods mapped to function names and signatures
-	public $debug_msg	= '';		// Debug Message
-	public $system_methods	= array();	// XML RPC Server methods
-	public $controller_obj;
-	public $object		= FALSE;
+	/**
+	 * array of methods mapped to function names and signatures
+	 *
+	 * @var array
+	 */
+	public $methods = array();
+	
+	/**
+	 * Debug Message
+	 *
+	 * @var string
+	 */
+	public $debug_msg = '';
+	
+	/**
+	 * XML RPC Server methods
+	 *
+	 * @var array
+	 */
+	public $system_methods	= array();
+	
+	/**
+	 * Configuration object
+	 *
+	 * @var object
+	 */
+	public $object = FALSE;
 
+	/**
+	 * Initialize XMLRPC class
+	 *
+	 * @param array $config
+	 */
 	public function __construct($config = array())
 	{
 		parent::__construct();
diff --git a/system/libraries/Zip.php b/system/libraries/Zip.php
index 8043854..86d0787 100644
--- a/system/libraries/Zip.php
+++ b/system/libraries/Zip.php
@@ -42,13 +42,53 @@
  */
 class CI_Zip  {
 
+	/**
+	 * Zip data in string form
+	 *
+	 * @var string
+	 */
 	public $zipdata		= '';
+	
+	/**
+	 * Zip data for a directory in string form
+	 *
+	 * @var string
+	 */
 	public $directory	= '';
+	
+	/**
+	 * Number of files/folder in zip file
+	 *
+	 * @var int
+	 */
 	public $entries		= 0;
+	
+	/**
+	 * Number of files in zip
+	 *
+	 * @var int
+	 */
 	public $file_num	= 0;
+	
+	/**
+	 * relative offset of local header
+	 *
+	 * @var int
+	 */
 	public $offset		= 0;
+	
+	/**
+	 * Reference to time at init
+	 *
+	 * @var int
+	 */
 	public $now;
 
+	/**
+	 * Initialize zip compression class
+	 *
+	 * @return void
+	 */
 	public function __construct()
 	{
 		$this->now = time();
diff --git a/tests/codeigniter/database/DB_driver_test.php b/tests/codeigniter/database/DB_driver_test.php
new file mode 100644
index 0000000..fb40f06
--- /dev/null
+++ b/tests/codeigniter/database/DB_driver_test.php
@@ -0,0 +1,36 @@
+<?php
+
+class DB_driver_test extends CI_TestCase {
+
+	// ------------------------------------------------------------------------
+
+	public function test_initialize()
+	{
+		$config = Mock_Database_DB::config(DB_DRIVER);
+		$driver_name = current(explode('/', DB_DRIVER));
+		$driver = $this->$driver_name($config[DB_DRIVER]);
+
+		$this->assertTrue($driver->initialize());
+	}
+
+	protected function pdo($config)
+	{
+		return new Mock_Database_Drivers_PDO($config);
+	}
+
+	protected function mysql($config)
+	{
+		return new Mock_Database_Drivers_Mysql($config);
+	}
+
+	protected function sqlite($config)
+	{
+		return new Mock_Database_Drivers_Sqlite($config);
+	}
+
+	protected function pgsql($config)
+	{
+		return new Mock_Database_Drivers_Postgre($config);
+	}
+	
+}
\ No newline at end of file
diff --git a/tests/codeigniter/database/query_builder/.gitkeep b/tests/codeigniter/database/query_builder/.gitkeep
deleted file mode 100644
index e69de29..0000000
--- a/tests/codeigniter/database/query_builder/.gitkeep
+++ /dev/null
diff --git a/tests/codeigniter/database/query_builder/get_test.php b/tests/codeigniter/database/query_builder/get_test.php
new file mode 100644
index 0000000..0751c93
--- /dev/null
+++ b/tests/codeigniter/database/query_builder/get_test.php
@@ -0,0 +1,53 @@
+<?php
+
+class Get_test extends CI_TestCase {
+
+	/**
+	 * @var object Database/Query Builder holder
+	 */
+	protected $db;
+
+	public function set_up()
+	{
+		$this->db = Mock_Database_Schema_Skeleton::init(DB_DRIVER);
+
+		Mock_Database_Schema_Skeleton::create_tables();
+		Mock_Database_Schema_Skeleton::create_data();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * @see ./mocks/schema/skeleton.php
+	 */
+	public function test_get_simple()
+	{
+		$jobs = $this->db->get('job')->result_array();
+		
+		// Dummy jobs contain 4 rows
+		$this->assertCount(4, $jobs);
+
+		// Check rows item
+		$this->assertEquals('Developer', $jobs[0]['name']);
+		$this->assertEquals('Politician', $jobs[1]['name']);
+		$this->assertEquals('Accountant', $jobs[2]['name']);
+		$this->assertEquals('Musician', $jobs[3]['name']);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * @see ./mocks/schema/skeleton.php
+	 */
+	public function test_get_where()
+	{
+		$job1 = $this->db->get('job', array('id' => 1))->result_array();
+		
+		// Dummy jobs contain 1 rows
+		$this->assertCount(1, $job1);
+
+		// Check rows item
+		$this->assertEquals('Developer', $job1[0]['name']);
+	}
+	
+}
\ No newline at end of file
diff --git a/tests/codeigniter/database/query_builder/insert_test.php b/tests/codeigniter/database/query_builder/insert_test.php
new file mode 100644
index 0000000..53ce23c
--- /dev/null
+++ b/tests/codeigniter/database/query_builder/insert_test.php
@@ -0,0 +1,67 @@
+<?php
+
+class Insert_test extends CI_TestCase {
+
+	/**
+	 * @var object Database/Query Builder holder
+	 * @see ./mocks/schema/skeleton.php
+	 */
+	protected $db;
+
+	public function set_up()
+	{
+		$this->db = Mock_Database_Schema_Skeleton::init(DB_DRIVER);
+
+		Mock_Database_Schema_Skeleton::create_tables();
+
+		// Truncate the current datas
+		$this->db->truncate('job');
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * @see ./mocks/schema/skeleton.php
+	 */
+	public function test_insert()
+	{
+		$job_data = array('id' => 1, 'name' => 'Grocery Sales', 'description' => 'Discount!');
+		
+		// Do normal insert
+		$this->assertTrue($this->db->insert('job', $job_data));
+
+		$jobs = $this->db->get('job')->result_array();
+		$job1 = $jobs[0];
+
+		// Check the result
+		$this->assertEquals('Grocery Sales', $job1['name']);
+
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * @see ./mocks/schema/skeleton.php
+	 */
+	public function test_insert_batch()
+	{
+		$job_datas = array(
+			array('id' => 2, 'name' => 'Commedian', 'description' => 'Theres something in your teeth'), 
+			array('id' => 3, 'name' => 'Cab Driver', 'description' => 'Iam yellow'),
+		);
+		
+		// Do insert batch except for sqlite driver
+		if (strpos(DB_DRIVER, 'sqlite') === FALSE)
+		{
+			$this->assertTrue($this->db->insert_batch('job', $job_datas));
+
+			$job_2 = $this->db->where('id', 2)->get('job')->row();
+			$job_3 = $this->db->where('id', 3)->get('job')->row();
+
+			// Check the result
+			$this->assertEquals('Commedian', $job_2->name);
+			$this->assertEquals('Cab Driver', $job_3->name);
+		}
+	}
+	
+}
\ No newline at end of file
diff --git a/tests/codeigniter/database/query_builder/select_test.php b/tests/codeigniter/database/query_builder/select_test.php
new file mode 100644
index 0000000..dbf432a
--- /dev/null
+++ b/tests/codeigniter/database/query_builder/select_test.php
@@ -0,0 +1,95 @@
+<?php
+
+class Select_test extends CI_TestCase {
+
+	/**
+	 * @var object Database/Query Builder holder
+	 */
+	protected $db;
+
+	public function set_up()
+	{
+		$this->db = Mock_Database_Schema_Skeleton::init(DB_DRIVER);
+
+		Mock_Database_Schema_Skeleton::create_tables();
+		Mock_Database_Schema_Skeleton::create_data();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * @see ./mocks/schema/skeleton.php
+	 */
+	public function test_select_only_one_collumn()
+	{
+		$jobs_name = $this->db->select('name')
+		                      ->get('job')
+		                      ->result_array();
+		
+		// Check rows item
+		$this->assertArrayHasKey('name',$jobs_name[0]);
+		$this->assertFalse(array_key_exists('id', $jobs_name[0]));
+		$this->assertFalse(array_key_exists('description', $jobs_name[0]));
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * @see ./mocks/schema/skeleton.php
+	 */
+	public function test_select_min()
+	{
+		$job_min = $this->db->select_min('id')
+		                    ->get('job')
+		                    ->result_array();
+		
+		// Minimum id was 1
+		$this->assertEquals('1', $job_min[0]['id']);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * @see ./mocks/schema/skeleton.php
+	 */
+	public function test_select_max()
+	{
+		$job_max = $this->db->select_max('id')
+		                    ->get('job')
+		                    ->result_array();
+		
+		// Maximum id was 4
+		$this->assertEquals('4', $job_max[0]['id']);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * @see ./mocks/schema/skeleton.php
+	 */
+	public function test_select_avg()
+	{
+		$job_avg = $this->db->select_avg('id')
+		                    ->get('job')
+		                    ->result_array();
+		
+		// Average should be 2.5
+		$this->assertEquals('2.5', $job_avg[0]['id']);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * @see ./mocks/schema/skeleton.php
+	 */
+	public function test_select_sum()
+	{
+		$job_sum = $this->db->select_sum('id')
+		                    ->get('job')
+		                    ->result_array();
+		
+		// Sum of ids should be 10
+		$this->assertEquals('10', $job_sum[0]['id']);
+	}
+	
+}
\ No newline at end of file
diff --git a/tests/mocks/autoloader.php b/tests/mocks/autoloader.php
index dd59292..f1bdb5d 100644
--- a/tests/mocks/autoloader.php
+++ b/tests/mocks/autoloader.php
@@ -53,13 +53,24 @@
 			$dir = BASEPATH.'libraries'.DIRECTORY_SEPARATOR;
 			$class = $subclass;
 		}
+		elseif (preg_match('/^CI_DB_(.+)_(driver|forge|result|utility)$/', $class, $m) && count($m) == 3)
+		{
+			$driver_path = BASEPATH.'database'.DIRECTORY_SEPARATOR.'drivers'.DIRECTORY_SEPARATOR;
+			$dir = $driver_path.$m[1].DIRECTORY_SEPARATOR;
+			$file = $dir.$m[1].'_'.$m[2].'.php';
+		}
+		elseif (strpos($class, 'CI_DB') === 0)
+		{
+			$dir = BASEPATH.'database'.DIRECTORY_SEPARATOR;
+			$file = $dir.str_replace(array('CI_DB','active_record'), array('DB', 'active_rec'), $subclass).'.php';
+		}
 		else
 		{
 			$class = strtolower($class);
 		}
 	}
 
-	$file = $dir.$class.'.php';
+	$file = (isset($file)) ? $file : $dir.$class.'.php';
 
 	if ( ! file_exists($file))
 	{
@@ -71,7 +82,7 @@
 		{
 			return FALSE;
 		}
-
+		
 	    throw new InvalidArgumentException("Unable to load $class.");
 	}
 
diff --git a/tests/mocks/database/ci_test.sqlite b/tests/mocks/database/ci_test.sqlite
index 37ce4f8..86d868a 100755
--- a/tests/mocks/database/ci_test.sqlite
+++ b/tests/mocks/database/ci_test.sqlite
Binary files differ
diff --git a/tests/mocks/database/config/pdo/mysql.php b/tests/mocks/database/config/pdo/mysql.php
new file mode 100644
index 0000000..cefb6b0
--- /dev/null
+++ b/tests/mocks/database/config/pdo/mysql.php
@@ -0,0 +1,37 @@
+<?php
+
+return array(
+	
+	// Typical Database configuration
+	'pdo/mysql' => array(
+		'dsn' => '',
+		'hostname' => 'localhost',
+		'username' => 'travis',
+		'password' => '',
+		'database' => 'ci_test',
+		'dbdriver' => 'pdo',
+		'pdodriver' => 'mysql',
+	),
+
+	// Database configuration with failover
+	'pdo/mysql_failover' => array(
+		'dsn' => '',
+		'hostname' => 'localhost',
+		'username' => 'not_travis',
+		'password' => 'wrong password',
+		'database' => 'not_ci_test',
+		'dbdriver' => 'pdo',
+		'pdodriver' => 'mysql',
+		'failover' => array(
+			array(
+				'dsn' => '',
+				'hostname' => 'localhost',
+				'username' => 'travis',
+				'password' => '',
+				'database' => 'ci_test',
+				'dbdriver' => 'pdo',
+				'pdodriver' => 'mysql',
+			),
+		),
+	),
+);
\ No newline at end of file
diff --git a/tests/mocks/database/config/pdo/pgsql.php b/tests/mocks/database/config/pdo/pgsql.php
new file mode 100644
index 0000000..5196e9a
--- /dev/null
+++ b/tests/mocks/database/config/pdo/pgsql.php
@@ -0,0 +1,37 @@
+<?php
+
+return array(
+	
+	// Typical Database configuration
+	'pdo/pgsql' => array(
+		'dsn' => 'pgsql:host=localhost;port=5432;dbname=ci_test;',
+		'hostname' => 'localhost',
+		'username' => 'postgres',
+		'password' => '',
+		'database' => 'ci_test',
+		'dbdriver' => 'pdo',
+		'pdodriver' => 'pgsql',
+	),
+
+	// Database configuration with failover
+	'pdo/pgsql_failover' => array(
+		'dsn' => '',
+		'hostname' => 'localhost',
+		'username' => 'not_travis',
+		'password' => 'wrong password',
+		'database' => 'not_ci_test',
+		'dbdriver' => 'pdo',
+		'pdodriver' => 'pgsql',
+		'failover' => array(
+			array(
+				'dsn' => 'pgsql:host=localhost;port=5432;dbname=ci_test;',
+				'hostname' => 'localhost',
+				'username' => 'postgres',
+				'password' => '',
+				'database' => 'ci_test',
+				'dbdriver' => 'pdo',
+				'pdodriver' => 'pgsql',
+			),
+		),
+	),
+);
\ No newline at end of file
diff --git a/tests/mocks/database/config/pdo/sqlite.php b/tests/mocks/database/config/pdo/sqlite.php
new file mode 100644
index 0000000..c68b4b2
--- /dev/null
+++ b/tests/mocks/database/config/pdo/sqlite.php
@@ -0,0 +1,37 @@
+<?php
+
+return array(
+
+	// Typical Database configuration
+	'pdo/sqlite' => array(
+		'dsn' => 'sqlite:/'.realpath(__DIR__.'/../..').'/ci_test.sqlite',
+		'hostname' => 'localhost',
+		'username' => 'sqlite',
+		'password' => 'sqlite',
+		'database' => 'sqlite',
+		'dbdriver' => 'pdo',
+		'pdodriver' => 'sqlite',
+	),
+
+	// Database configuration with failover
+	'pdo/sqlite_failover' => array(
+		'dsn' => 'sqlite:not_exists.sqlite',
+		'hostname' => 'localhost',
+		'username' => 'sqlite',
+		'password' => 'sqlite',
+		'database' => 'sqlite',
+		'dbdriver' => 'pdo',
+		'pdodriver' => 'sqlite',
+		'failover' => array(
+			array(
+				'dsn' => 'sqlite:/'.realpath(__DIR__.'/../..').'/ci_test.sqlite',
+				'hostname' => 'localhost',
+				'username' => 'sqlite',
+				'password' => 'sqlite',
+				'database' => 'sqlite',
+				'dbdriver' => 'pdo', 
+				'pdodriver' => 'sqlite',
+			),
+		),
+	),
+);
\ No newline at end of file
diff --git a/tests/mocks/database/config/sqlite.php b/tests/mocks/database/config/sqlite.php
index 8665e20..755ce2a 100644
--- a/tests/mocks/database/config/sqlite.php
+++ b/tests/mocks/database/config/sqlite.php
@@ -1,5 +1,4 @@
 <?php
-$dbdriver = is_php('5.4') ? 'sqlite3' : 'sqlite';
 
 return array(
 
@@ -10,7 +9,7 @@
 		'username' => 'sqlite',
 		'password' => 'sqlite',
 		'database' => realpath(__DIR__.'/..').'/ci_test.sqlite',
-		'dbdriver' => $dbdriver,
+		'dbdriver' => 'sqlite3',
 	),
 
 	// Database configuration with failover
@@ -20,15 +19,15 @@
 		'username' => 'sqlite',
 		'password' => 'sqlite',
 		'database' => '../not_exists.sqlite',
-		'dbdriver' => $dbdriver,
+		'dbdriver' => 'sqlite3',
 		'failover' => array(
 			array(
 				'dsn' => '',
 				'hostname' => 'localhost',
 				'username' => 'sqlite',
 				'password' => 'sqlite',
-				'database' => realpath(__DIR__.'/..').'/ci_testf.sqlite',
-				'dbdriver' => $dbdriver,
+				'database' => realpath(__DIR__.'/..').'/ci_test.sqlite',
+				'dbdriver' => 'sqlite3',
 			),
 		),
 	),
diff --git a/tests/mocks/database/db.php b/tests/mocks/database/db.php
index 43a0d39..59028ed 100644
--- a/tests/mocks/database/db.php
+++ b/tests/mocks/database/db.php
@@ -45,19 +45,18 @@
 		);
 
 		$config = array_merge($this->config[$group], $params);
+		$dsnstring = ( ! empty($config['dsn'])) ? $config['dsn'] : FALSE;
+		$pdodriver = ( ! empty($config['pdodriver'])) ? $config['pdodriver'] : FALSE;
+		$failover = ( ! empty($config['failover'])) ? $config['failover'] : FALSE;
 
-		if ( ! empty($config['dsn']))
-		{
-			$dsn = $config['dsn'];
-		}
-		else
-		{
-			$dsn = $config['dbdriver'].'://'.$config['username'].':'.$config['password']
+		$dsn = $config['dbdriver'].'://'.$config['username'].':'.$config['password']
 			       .'@'.$config['hostname'].'/'.$config['database'];
 
-		}
-
+		// Build the parameter
 		$other_params = array_slice($config, 6);
+		if ($dsnstring) $other_params['dsn'] = $dsnstring;
+		if ($pdodriver) $other_params['pdodriver'] = $pdodriver;
+		if ($failover) $other_params['failover'] = $failover;
 
 		return $dsn.'?'.http_build_query($other_params);
 	}
diff --git a/tests/mocks/database/db/driver.php b/tests/mocks/database/db/driver.php
new file mode 100644
index 0000000..cb18202
--- /dev/null
+++ b/tests/mocks/database/db/driver.php
@@ -0,0 +1,36 @@
+<?php
+
+class Mock_Database_DB_Driver extends CI_DB_driver {
+	
+	/**
+	 * @var object The actual Driver
+	 */
+	protected $ci_db_driver;
+
+	/**
+	 * Instantiate the database driver
+	 *
+	 * @param  string 	DB Driver class name
+	 * @param  array 	DB configuration to set
+	 * @return void
+	 */
+	public function __construct($driver_class, $config = array())
+	{
+		if (is_string($driver_class)) $this->ci_db_driver = new $driver_class($config);
+	}
+
+	/**
+	 * Overloading method, emulate the actual driver method (multiple inheritance workaround)
+	 */
+	public function __call($method, $arguments)
+	{
+		if ( ! is_callable(array($this->ci_db_driver, $method)))
+		{
+			throw new BadMethodCallException($method. ' not exists or not implemented');
+		}
+
+		return call_user_func_array(array($this->ci_db_driver, $method), $arguments);
+	}
+}
+
+class CI_DB extends Mock_Database_DB_QueryBuilder {}
\ No newline at end of file
diff --git a/tests/mocks/database/db/querybuilder.php b/tests/mocks/database/db/querybuilder.php
new file mode 100644
index 0000000..1b95c92
--- /dev/null
+++ b/tests/mocks/database/db/querybuilder.php
@@ -0,0 +1,10 @@
+<?php
+
+if ( ! class_exists('CI_DB_query_builder'))
+{
+	class Mock_Database_DB_QueryBuilder extends CI_DB_active_record {}
+}
+else
+{
+	class Mock_Database_DB_QueryBuilder extends CI_DB_query_builder {}
+}
diff --git a/tests/mocks/database/drivers/mysql.php b/tests/mocks/database/drivers/mysql.php
new file mode 100644
index 0000000..34a74e2
--- /dev/null
+++ b/tests/mocks/database/drivers/mysql.php
@@ -0,0 +1,16 @@
+<?php
+
+class Mock_Database_Drivers_Mysql extends Mock_Database_DB_Driver {
+	
+	/**
+	 * Instantiate the database driver
+	 *
+	 * @param  string 	DB Driver class name
+	 * @param  array 	DB configuration to set
+	 * @return void
+	 */
+	public function __construct($config = array())
+	{
+		parent::__construct('CI_DB_mysql_driver', $config);
+	}
+}
\ No newline at end of file
diff --git a/tests/mocks/database/drivers/pdo.php b/tests/mocks/database/drivers/pdo.php
new file mode 100644
index 0000000..590e195
--- /dev/null
+++ b/tests/mocks/database/drivers/pdo.php
@@ -0,0 +1,16 @@
+<?php
+
+class Mock_Database_Drivers_PDO extends Mock_Database_DB_Driver {
+	
+	/**
+	 * Instantiate the database driver
+	 *
+	 * @param  string 	DB Driver class name
+	 * @param  array 	DB configuration to set
+	 * @return void
+	 */
+	public function __construct($config = array())
+	{
+		parent::__construct('CI_DB_pdo_driver', $config);
+	}
+}
\ No newline at end of file
diff --git a/tests/mocks/database/drivers/postgre.php b/tests/mocks/database/drivers/postgre.php
new file mode 100644
index 0000000..0df9059
--- /dev/null
+++ b/tests/mocks/database/drivers/postgre.php
@@ -0,0 +1,16 @@
+<?php
+
+class Mock_Database_Drivers_Postgre extends Mock_Database_DB_Driver {
+	
+	/**
+	 * Instantiate the database driver
+	 *
+	 * @param  string 	DB Driver class name
+	 * @param  array 	DB configuration to set
+	 * @return void
+	 */
+	public function __construct($config = array())
+	{
+		parent::__construct('CI_DB_postgre_driver', $config);
+	}
+}
\ No newline at end of file
diff --git a/tests/mocks/database/drivers/sqlite.php b/tests/mocks/database/drivers/sqlite.php
new file mode 100644
index 0000000..76a182c
--- /dev/null
+++ b/tests/mocks/database/drivers/sqlite.php
@@ -0,0 +1,16 @@
+<?php
+
+class Mock_Database_Drivers_Sqlite extends Mock_Database_DB_Driver {
+	
+	/**
+	 * Instantiate the database driver
+	 *
+	 * @param  string 	DB Driver class name
+	 * @param  array 	DB configuration to set
+	 * @return void
+	 */
+	public function __construct($config = array())
+	{
+		parent::__construct('CI_DB_sqlite3_driver', $config);
+	}
+}
\ No newline at end of file
diff --git a/tests/mocks/database/schema/.gitkeep b/tests/mocks/database/schema/.gitkeep
deleted file mode 100644
index e69de29..0000000
--- a/tests/mocks/database/schema/.gitkeep
+++ /dev/null
diff --git a/tests/mocks/database/schema/skeleton.php b/tests/mocks/database/schema/skeleton.php
new file mode 100644
index 0000000..a3d5bac
--- /dev/null
+++ b/tests/mocks/database/schema/skeleton.php
@@ -0,0 +1,98 @@
+<?php
+
+class Mock_Database_Schema_Skeleton {
+
+	/**
+	 * @var object Database Holder
+	 */
+	public static $db;
+
+	/**
+	 * @var object Forge Holder
+	 */
+	public static $forge;
+
+	/**
+	 * @var object Driver Holder
+	 */
+	public static $driver;
+
+	/**
+	 * Initialize both database and forge components
+	 */
+	public static function init($driver)
+	{
+		if (empty(static::$db) && empty(static::$forge))
+		{
+			$config = Mock_Database_DB::config($driver);
+			$connection = new Mock_Database_DB($config);
+			$db = Mock_Database_DB::DB($connection->set_dsn($driver), TRUE);
+
+			CI_TestCase::instance()->ci_instance_var('db', $db);
+
+			$loader = new Mock_Core_Loader();
+			$loader->dbforge();
+			$forge = CI_TestCase::instance()->ci_instance_var('dbforge');
+
+			static::$db = $db;
+			static::$forge = $forge;
+			static::$driver = $driver;
+		}
+
+		return static::$db;
+	}
+	
+	
+	/**
+	 * Create the dummy tables
+	 *
+	 * @return void
+	 */
+	public static function create_tables()
+	{
+		// Job Table
+		static::$forge->add_field(array(
+			'id' => array(
+				'type' => 'INTEGER',
+				'constraint' => 3,
+			),
+			'name' => array(
+				'type' => 'VARCHAR',
+				'constraint' => 40,
+			),
+			'description' => array(
+				'type' => 'TEXT',
+			),
+		));
+		static::$forge->add_key('id', TRUE);
+		static::$forge->create_table('job', (strpos(static::$driver, 'pgsql') === FALSE));
+	}
+
+	/**
+	 * Create the dummy datas
+	 *
+	 * @return void
+	 */
+	public static function create_data()
+	{
+		// Job Data
+		$data = array(
+			'job' => array(
+				array('id' => 1, 'name' => 'Developer', 'description' => 'Awesome job, but sometimes makes you bored'), 
+				array('id' => 2, 'name' => 'Politician', 'description' => 'This is not really a job'),
+    			array('id' => 3, 'name' => 'Accountant', 'description' => 'Boring job, but you will get free snack at lunch'),
+			    array('id' => 4, 'name' => 'Musician', 'description' => 'Only Coldplay can actually called Musician'),
+			),
+		);
+
+		foreach ($data as $table => $dummy_data) 
+		{
+			static::$db->truncate($table);
+
+			foreach ($dummy_data as $single_dummy_data)
+			{
+				static::$db->insert($table, $single_dummy_data); 
+			}
+		}
+	}
+}
\ No newline at end of file
diff --git a/tests/travis/mysql.phpunit.xml b/tests/travis/mysql.phpunit.xml
index 44d6d6e..e9556f7 100644
--- a/tests/travis/mysql.phpunit.xml
+++ b/tests/travis/mysql.phpunit.xml
@@ -28,10 +28,5 @@
 			<directory suffix=".php">PROJECT_BASE.'tests'</directory>
 			<directory suffix=".php">'../../system/core/CodeIgniter.php'</directory>
 		</blacklist>
-		<whitelist>
-			<!--
-			<directory suffix=".php">'../system/core'</directory>
-			-->
-		</whitelist>
 	</filters>
 </phpunit>
\ No newline at end of file
diff --git a/tests/travis/pdo/mysql.phpunit.xml b/tests/travis/pdo/mysql.phpunit.xml
new file mode 100644
index 0000000..69eece2
--- /dev/null
+++ b/tests/travis/pdo/mysql.phpunit.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit 
+	bootstrap="../../Bootstrap.php"
+	colors="true"
+	convertNoticesToExceptions="true"
+	convertWarningsToExceptions="true"
+	stopOnError="false"
+	stopOnFailure="false"
+	stopOnIncomplete="false"
+	stopOnSkipped="false">
+	<php>
+        <const name="DB_DRIVER" value="pdo/mysql"/>
+    </php>
+	<testsuites>
+		<testsuite name="CodeIgniter Core Test Suite">
+			<file>../../codeigniter/Setup_test.php</file>
+			<directory suffix="test.php">../../codeigniter/core</directory>
+			<directory suffix="test.php">../../codeigniter/helpers</directory>
+			<directory suffix="test.php">../../codeigniter/libraries</directory>
+			<directory suffix="test.php">../../codeigniter/database</directory>
+		</testsuite>
+	</testsuites>
+	<filters>
+		<blacklist>
+			<directory suffix=".php">PEAR_INSTALL_DIR</directory>
+			<directory suffix=".php">PHP_LIBDIR</directory>
+			<directory suffix=".php">PROJECT_BASE.'tests'</directory>
+			<directory suffix=".php">'../../../system/core/CodeIgniter.php'</directory>
+		</blacklist>
+	</filters>
+</phpunit>
\ No newline at end of file
diff --git a/tests/travis/pdo/pgsql.phpunit.xml b/tests/travis/pdo/pgsql.phpunit.xml
new file mode 100644
index 0000000..e68c3e0
--- /dev/null
+++ b/tests/travis/pdo/pgsql.phpunit.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit 
+	bootstrap="../../Bootstrap.php"
+	colors="true"
+	convertNoticesToExceptions="true"
+	convertWarningsToExceptions="true"
+	stopOnError="false"
+	stopOnFailure="false"
+	stopOnIncomplete="false"
+	stopOnSkipped="false">
+	<php>
+        <const name="DB_DRIVER" value="pdo/pgsql"/>
+    </php>
+	<testsuites>
+		<testsuite name="CodeIgniter Core Test Suite">
+			<file>../../codeigniter/Setup_test.php</file>
+			<directory suffix="test.php">../../codeigniter/core</directory>
+			<directory suffix="test.php">../../codeigniter/helpers</directory>
+			<directory suffix="test.php">../../codeigniter/libraries</directory>
+			<directory suffix="test.php">../../codeigniter/database</directory>
+		</testsuite>
+	</testsuites>
+	<filters>
+		<blacklist>
+			<directory suffix=".php">PEAR_INSTALL_DIR</directory>
+			<directory suffix=".php">PHP_LIBDIR</directory>
+			<directory suffix=".php">PROJECT_BASE.'tests'</directory>
+			<directory suffix=".php">'../../../system/core/CodeIgniter.php'</directory>
+		</blacklist>
+	</filters>
+</phpunit>
\ No newline at end of file
diff --git a/tests/travis/pdo/sqlite.phpunit.xml b/tests/travis/pdo/sqlite.phpunit.xml
new file mode 100644
index 0000000..1871f62
--- /dev/null
+++ b/tests/travis/pdo/sqlite.phpunit.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit 
+	bootstrap="../../Bootstrap.php"
+	colors="true"
+	convertNoticesToExceptions="true"
+	convertWarningsToExceptions="true"
+	stopOnError="false"
+	stopOnFailure="false"
+	stopOnIncomplete="false"
+	stopOnSkipped="false">
+	<php>
+        <const name="DB_DRIVER" value="pdo/sqlite"/>
+    </php>
+	<testsuites>
+		<testsuite name="CodeIgniter Core Test Suite">
+			<file>../../codeigniter/Setup_test.php</file>
+			<directory suffix="test.php">../../codeigniter/core</directory>
+			<directory suffix="test.php">../../codeigniter/helpers</directory>
+			<directory suffix="test.php">../../codeigniter/libraries</directory>
+			<directory suffix="test.php">../../codeigniter/database</directory>
+		</testsuite>
+	</testsuites>
+	<filters>
+		<blacklist>
+			<directory suffix=".php">PEAR_INSTALL_DIR</directory>
+			<directory suffix=".php">PHP_LIBDIR</directory>
+			<directory suffix=".php">PROJECT_BASE.'tests'</directory>
+			<directory suffix=".php">'../../../system/core/CodeIgniter.php'</directory>
+		</blacklist>
+	</filters>
+</phpunit>
\ No newline at end of file
diff --git a/tests/travis/pgsql.phpunit.xml b/tests/travis/pgsql.phpunit.xml
index 9f52b40..ad8aede 100644
--- a/tests/travis/pgsql.phpunit.xml
+++ b/tests/travis/pgsql.phpunit.xml
@@ -28,10 +28,5 @@
 			<directory suffix=".php">PROJECT_BASE.'tests'</directory>
 			<directory suffix=".php">'../../system/core/CodeIgniter.php'</directory>
 		</blacklist>
-		<whitelist>
-			<!--
-			<directory suffix=".php">'../system/core'</directory>
-			-->
-		</whitelist>
 	</filters>
 </phpunit>
\ No newline at end of file
diff --git a/tests/travis/sqlite.phpunit.xml b/tests/travis/sqlite.phpunit.xml
index 74ebb48..628370e 100644
--- a/tests/travis/sqlite.phpunit.xml
+++ b/tests/travis/sqlite.phpunit.xml
@@ -28,10 +28,5 @@
 			<directory suffix=".php">PROJECT_BASE.'tests'</directory>
 			<directory suffix=".php">'../../system/core/CodeIgniter.php'</directory>
 		</blacklist>
-		<whitelist>
-			<!--
-			<directory suffix=".php">'../system/core'</directory>
-			-->
-		</whitelist>
 	</filters>
 </phpunit>
\ No newline at end of file
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 3bd8f98..a705319 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -29,6 +29,7 @@
    -  Added support for 3gp, 3g2, mp4, wmv, f4v, vlc Video files to mimes.php.
    -  Added support for m4a, aac, m4u, xspf, au, ac3, flac, ogg Audio files to mimes.php.
    -  Added support for kmz and kml (Google Earth) files to mimes.php.
+   -  Added Romanian and Greek characters in foreign_characters.php
    -  Updated support for doc files in mimes.php.
    -  Added application/xml for xml and application/xml, text/xsl for xsl in mimes.php.
    -  Changed logger to only chmod when file is first created.
@@ -54,8 +55,11 @@
 
 -  Database
 
-   -  Added the ability to insert objects with insert_batch() in :doc:`Active Record <database/active_record>`.
-   -  Added new :doc:`Active Record <database/active_record>` methods that return
+   -  Renamed the Active Record class to Query Builder to remove confusion with
+      the Active Record design pattern
+   -  Added new :doc:`Query Builder <database/query_builder>` methods that return
+   -  Added the ability to insert objects with insert_batch() in :doc:`Query Builder <database/query_builder>`.
+   -  Added new :doc:`Query Builder <database/query_builder>` methods that return
       the SQL string of queries without executing them: get_compiled_select(),
       get_compiled_insert(), get_compiled_update(), get_compiled_delete().
    -  Adding $escape parameter to the order_by function, this enables ordering by custom fields.
@@ -200,6 +204,7 @@
 -  Fixed a bug (#23, #1238) - delete_all() in the `Database Caching Library <database/caching>` used to delete .htaccess and index.html files, which is a potential security risk.
 -  Fixed a bug in :doc:`Trackback Library <libraries/trackback>` method validate_url() where it didn't actually do anything, due to input not being passed by reference.
 -  Fixed a bug (#11, #183, #863) - CI_Form_validation::_execute() silently continued to the next rule, if a rule method/function is not found.
+-  Fixed a bug (#122) Where routed uri string was being reported incorrectly in sub-directories
 -  Fixed a bug (#1242) - read_dir() in the :doc:`Zip Library <libraries/zip>` wasn't compatible with Windows.
 -  Fixed a bug (#306) - ODBC driver didn't have an _insert_batch() method, which resulted in fatal error being triggered when insert_batch() is used with it.
 -  Fixed a bug in MSSQL and SQLSrv's _truncate() where the TABLE keyword was missing.
@@ -208,6 +213,9 @@
 -  Fixed a bug in Oracle's and MSSQL's delete() methods where an erroneous SQL statement was generated when used with limit().
 -  Fixed a bug in SQLSRV's delete() method where like() and limit() conditions were ignored.
 -  Fixed a bug (#1265) - Database connections were always closed, regardless of the 'pconnect' option value.
+-  Fixed a bug (#128) - :doc:`Language Library <libraries/language>` did not correctly keep track of loaded language files.
+-  Fixed a bug (#1242) Added Windows path compatibility to function read_dir of ZIP library
+-  Fixed a bug (#1314) sess_destroy() did not destroy userdata.
 
 Version 2.1.1
 =============
diff --git a/user_guide_src/source/database/configuration.rst b/user_guide_src/source/database/configuration.rst
index 3f3bae3..7a19c84 100644
--- a/user_guide_src/source/database/configuration.rst
+++ b/user_guide_src/source/database/configuration.rst
@@ -106,18 +106,18 @@
 default we've used the word "default" for the primary connection, but it
 too can be renamed to something more relevant to your project.
 
-Active Record
+Query Builder
 -------------
 
-The :doc:`Active Record Class <active_record>` is globally enabled or
-disabled by setting the $active_record variable in the database
+The :doc:`Query Builder Class <query_builder>` is globally enabled or
+disabled by setting the $query_builder variable in the database
 configuration file to TRUE/FALSE (boolean). If you are not using the
-active record class, setting it to FALSE will utilize fewer resources
+query builder class, setting it to FALSE will utilize fewer resources
 when the database classes are initialized.
 
 ::
 
-	$active_record = TRUE;
+	$query_builder = TRUE;
 
 .. note:: that some CodeIgniter classes such as Sessions require Active
 	Records be enabled to access certain functionality.
@@ -134,7 +134,7 @@
 **database**		The name of the database you want to connect to.
 **dbdriver**		The database type. ie: mysql, postgre, odbc, etc. Must be specified in lower case.
 **dbprefix**		An optional table prefix which will added to the table name when running :doc:
-			`Active Record <active_record>` queries. This permits multiple CodeIgniter installations
+			`Query Builder <query_builder>` queries. This permits multiple CodeIgniter installations
 			to share one database.
 **pconnect**		TRUE/FALSE (boolean) - Whether to use a persistent connection.
 **db_debug**		TRUE/FALSE (boolean) - Whether database errors should be displayed.
diff --git a/user_guide_src/source/database/connecting.rst b/user_guide_src/source/database/connecting.rst
index fb45241..5822ca6 100644
--- a/user_guide_src/source/database/connecting.rst
+++ b/user_guide_src/source/database/connecting.rst
@@ -36,7 +36,7 @@
    string.
 #. TRUE/FALSE (boolean). Whether to return the connection ID (see
    Connecting to Multiple Databases below).
-#. TRUE/FALSE (boolean). Whether to enable the Active Record class. Set
+#. TRUE/FALSE (boolean). Whether to enable the Query Builder class. Set
    to TRUE by default.
 
 Manually Connecting to a Database
diff --git a/user_guide_src/source/database/examples.rst b/user_guide_src/source/database/examples.rst
index d1cd488..8b3cc47 100644
--- a/user_guide_src/source/database/examples.rst
+++ b/user_guide_src/source/database/examples.rst
@@ -104,10 +104,10 @@
 	$this->db->query($sql);
 	echo $this->db->affected_rows();
 
-Active Record Query
+Query Builder Query
 ===================
 
-The :doc:`Active Record Pattern <active_record>` gives you a simplified
+The :doc:`Query Builder Pattern <query_builder>` gives you a simplified
 means of retrieving data::
 
 	$query = $this->db->get('table_name');
@@ -118,10 +118,10 @@
 	}
 
 The above get() function retrieves all the results from the supplied
-table. The :doc:`Active Record <active_record>` class contains a full
+table. The :doc:`Query Builder <query_builder>` class contains a full
 compliment of functions for working with data.
 
-Active Record Insert
+Query Builder Insert
 ====================
 
 ::
diff --git a/user_guide_src/source/database/index.rst b/user_guide_src/source/database/index.rst
index ab12b7c..7ccb8fb 100644
--- a/user_guide_src/source/database/index.rst
+++ b/user_guide_src/source/database/index.rst
@@ -3,7 +3,7 @@
 ##################
 
 CodeIgniter comes with a full-featured and very fast abstracted database
-class that supports both traditional structures and Active Record
+class that supports both traditional structures and Query Builder
 patterns. The database functions offer clear, simple syntax.
 
 .. toctree::
@@ -15,7 +15,7 @@
 	Running Queries <queries>
 	Generating Query Results <results>
 	Query Helper Functions <helpers>
-	Active Record Class <active_record>
+	Query Builder Class <query_builder>
 	Transactions <transactions>
 	Table MetaData <table_data>
 	Field MetaData <fields>
diff --git a/user_guide_src/source/database/queries.rst b/user_guide_src/source/database/queries.rst
index 15a7361..d23efec 100644
--- a/user_guide_src/source/database/queries.rst
+++ b/user_guide_src/source/database/queries.rst
@@ -50,7 +50,7 @@
 **********************
 
 In many databases it is advisable to protect table and field names - for
-example with backticks in MySQL. **Active Record queries are
+example with backticks in MySQL. **Query Builder queries are
 automatically protected**, however if you need to manually protect an
 identifier you can use::
 
diff --git a/user_guide_src/source/database/active_record.rst b/user_guide_src/source/database/query_builder.rst
similarity index 95%
rename from user_guide_src/source/database/active_record.rst
rename to user_guide_src/source/database/query_builder.rst
index e328c11..54e8df6 100644
--- a/user_guide_src/source/database/active_record.rst
+++ b/user_guide_src/source/database/query_builder.rst
@@ -1,15 +1,15 @@
 ###################
-Active Record Class
+Query Builder Class
 ###################
 
-CodeIgniter uses a modified version of the Active Record Database
-Pattern. This pattern allows information to be retrieved, inserted, and
-updated in your database with minimal scripting. In some cases only one
-or two lines of code are necessary to perform a database action.
+CodeIgniter gives you access to a Query Builder class. This pattern 
+allows information to be retrieved, inserted, and updated in your 
+database with minimal scripting. In some cases only one or two lines
+of code are necessary to perform a database action.
 CodeIgniter does not require that each database table be its own class
 file. It instead provides a more simplified interface.
 
-Beyond simplicity, a major benefit to using the Active Record features
+Beyond simplicity, a major benefit to using the Query Builder features
 is that it allows you to create database independent applications, since
 the query syntax is generated by each database adapter. It also allows
 for safer queries, since the values are escaped automatically by the
@@ -67,8 +67,8 @@
 
 	// Produces string: SELECT * FROM mytable
 
-The second parameter enables you to set whether or not the active record query
-will be reset (by default it will be just like `$this->db->get()`)::
+The second parameter enables you to set whether or not the query builder query
+will be reset (by default it will be&mdash;just like `$this->db->get()`)::
 
 	echo $this->db->limit(10,20)->get_compiled_select('mytable', FALSE);
 	// Produces string: SELECT * FROM mytable LIMIT 20, 10
@@ -512,7 +512,7 @@
 ==============================
 
 Permits you to determine the number of rows in a particular Active
-Record query. Queries will accept Active Record restrictors such as
+Record query. Queries will accept Query Builder restrictors such as
 where(), or_where(), like(), or_like(), etc. Example::
 
 	echo $this->db->count_all_results('my_table');  // Produces an integer, like 25
@@ -636,7 +636,7 @@
 
 	// Produces string: INSERT INTO mytable (title, name, date) VALUES ('My title', 'My name', 'My date')
 
-The second parameter enables you to set whether or not the active record query
+The second parameter enables you to set whether or not the query builder query
 will be reset (by default it will be--just like `$this->db->insert()`_)::
 
 	echo $this->db->set('title', 'My Title')->get_compiled_insert('mytable', FALSE);
@@ -928,12 +928,12 @@
 .. _ar-caching:
 
 *********************
-Active Record Caching
+Query Builder Caching
 *********************
 
-While not "true" caching, Active Record enables you to save (or "cache")
+While not "true" caching, Query Builder enables you to save (or "cache")
 certain parts of your queries for reuse at a later point in your
-script's execution. Normally, when an Active Record call is completed,
+script's execution. Normally, when an Query Builder call is completed,
 all stored information is reset for the next call. With caching, you can
 prevent this reset, and reuse information easily.
 
@@ -944,7 +944,7 @@
 $this->db->start_cache()
 ========================
 
-This function must be called to begin caching. All Active Record queries
+This function must be called to begin caching. All Query Builder queries
 of the correct type (see below for supported queries) are stored for
 later use.
 
@@ -956,7 +956,7 @@
 $this->db->flush_cache()
 ========================
 
-This function deletes all items from the Active Record cache.
+This function deletes all items from the Query Builder cache.
 
 Here's a usage example::
 
@@ -983,12 +983,12 @@
 $this->db->reset_query()
 ========================
 
-Resetting Active Record allows you to start fresh with your query without
+Resetting Query Builder allows you to start fresh with your query without
 executing it first using a method like $this->db->get() or $this->db->insert().
 Just like the methods that execute a query, this will *not* reset items you've
-cached using `Active Record Caching`_.
+cached using `Query Builder Caching`_.
 
-This is useful in situations where you are using Active Record to generate SQL
+This is useful in situations where you are using Query Builder to generate SQL
 (ex. ``$this->db->get_compiled_select()``) but then choose to, for instance,
 run the query::
 
diff --git a/user_guide_src/source/general/models.rst b/user_guide_src/source/general/models.rst
index b816f95..0156b04 100644
--- a/user_guide_src/source/general/models.rst
+++ b/user_guide_src/source/general/models.rst
@@ -55,7 +55,7 @@
 	}
 
 .. note:: The functions in the above example use the :doc:`Active
-	Record <../database/active_record>` database functions.
+	Record <../database/query_builder>` database functions.
 
 .. note:: For the sake of simplicity in this example we're using $_POST
 	directly. This is generally bad practice, and a more common approach
diff --git a/user_guide_src/source/general/styleguide.rst b/user_guide_src/source/general/styleguide.rst
index 2b91d1c..925954c 100644
--- a/user_guide_src/source/general/styleguide.rst
+++ b/user_guide_src/source/general/styleguide.rst
@@ -149,7 +149,7 @@
 the following are recommended.
 
 `DocBlock <http://manual.phpdoc.org/HTMLSmartyConverter/HandS/phpDocumentor/tutorial_phpDocumentor.howto.pkg.html#basics.docblock>`_
-style comments preceding class and method declarations so they can be
+style comments preceding class, method, and property declarations so they can be
 picked up by IDEs::
 
 	/**
@@ -172,6 +172,17 @@
 	 * @return	string
 	 */
 	function xml_encode($str)
+	
+::
+
+	/**
+	 * Data for class manipulation
+	 *
+	 * @var	array
+	 */
+	public $data
+	
+	
 
 Use single line comments within code, leaving a blank line between large
 comment blocks and code.
diff --git a/user_guide_src/source/helpers/date_helper.rst b/user_guide_src/source/helpers/date_helper.rst
index b21d147..18216c5 100644
--- a/user_guide_src/source/helpers/date_helper.rst
+++ b/user_guide_src/source/helpers/date_helper.rst
@@ -330,36 +330,46 @@
 
 	<form action="#">
 		<select name="timezones">
-			<option value='UM12'>(UTC - 12:00) Enitwetok, Kwajalien</option>
-			<option value='UM11'>(UTC - 11:00) Nome, Midway Island, Samoa</option>
-			<option value='UM10'>(UTC - 10:00) Hawaii</option>
-			<option value='UM9'>(UTC - 9:00) Alaska</option>
-			<option value='UM8'>(UTC - 8:00) Pacific Time</option>
-			<option value='UM7'>(UTC - 7:00) Mountain Time</option>
-			<option value='UM6'>(UTC - 6:00) Central Time, Mexico City</option>
-			<option value='UM5'>(UTC - 5:00) Eastern Time, Bogota, Lima, Quito</option>
-			<option value='UM4'>(UTC - 4:00) Atlantic Time, Caracas, La Paz</option>
-			<option value='UM25'>(UTC - 3:30) Newfoundland</option>
-			<option value='UM3'>(UTC - 3:00) Brazil, Buenos Aires, Georgetown, Falkland Is.</option>
-			<option value='UM2'>(UTC - 2:00) Mid-Atlantic, Ascention Is., St Helena</option>
-			<option value='UM1'>(UTC - 1:00) Azores, Cape Verde Islands</option>
-			<option value='UTC' selected='selected'>(UTC) Casablanca, Dublin, Edinburgh, London, Lisbon, Monrovia</option>
-			<option value='UP1'>(UTC + 1:00) Berlin, Brussels, Copenhagen, Madrid, Paris, Rome</option>
-			<option value='UP2'>(UTC + 2:00) Kaliningrad, South Africa, Warsaw</option>
-			<option value='UP3'>(UTC + 3:00) Baghdad, Riyadh, Moscow, Nairobi</option>
-			<option value='UP25'>(UTC + 3:30) Tehran</option>
-			<option value='UP4'>(UTC + 4:00) Adu Dhabi, Baku, Muscat, Tbilisi</option>
-			<option value='UP35'>(UTC + 4:30) Kabul</option>
-			<option value='UP5'>(UTC + 5:00) Islamabad, Karachi, Tashkent</option>
-			<option value='UP45'>(UTC + 5:30) Bombay, Calcutta, Madras, New Delhi</option>
-			<option value='UP6'>(UTC + 6:00) Almaty, Colomba, Dhaka</option>
-			<option value='UP7'>(UTC + 7:00) Bangkok, Hanoi, Jakarta</option>
-			<option value='UP8'>(UTC + 8:00) Beijing, Hong Kong, Perth, Singapore, Taipei</option>
-			<option value='UP9'>(UTC + 9:00) Osaka, Sapporo, Seoul, Tokyo, Yakutsk</option>
-			<option value='UP85'>(UTC + 9:30) Adelaide, Darwin</option>
-			<option value='UP10'>(UTC + 10:00) Melbourne, Papua New Guinea, Sydney, Vladivostok</option>
-			<option value='UP11'>(UTC + 11:00) Magadan, New Caledonia, Solomon Islands</option>
-			<option value='UP12'>(UTC + 12:00) Auckland, Wellington, Fiji, Marshall Island</option>
+			<option value='UM12'>(UTC -12:00) Baker/Howland Island</option>
+			<option value='UM11'>(UTC -11:00) Samoa Time Zone, Niue</option>
+			<option value='UM10'>(UTC -10:00) Hawaii-Aleutian Standard Time, Cook Islands, Tahiti</option>
+			<option value='UM95'>(UTC -9:30) Marquesas Islands</option>
+			<option value='UM9'>(UTC -9:00) Alaska Standard Time, Gambier Islands</option>
+			<option value='UM8'>(UTC -8:00) Pacific Standard Time, Clipperton Island</option>
+			<option value='UM7'>(UTC -7:00) Mountain Standard Time</option>
+			<option value='UM6'>(UTC -6:00) Central Standard Time</option>
+			<option value='UM5'>(UTC -5:00) Eastern Standard Time, Western Caribbean Standard Time</option>
+			<option value='UM45'>(UTC -4:30) Venezuelan Standard Time</option>
+			<option value='UM4'>(UTC -4:00) Atlantic Standard Time, Eastern Caribbean Standard Time</option>
+			<option value='UM35'>(UTC -3:30) Newfoundland Standard Time</option>
+			<option value='UM3'>(UTC -3:00) Argentina, Brazil, French Guiana, Uruguay</option>
+			<option value='UM2'>(UTC -2:00) South Georgia/South Sandwich Islands</option>
+			<option value='UM1'>(UTC -1:00) Azores, Cape Verde Islands</option>
+			<option value='UTC' selected='selected'>(UTC) Greenwich Mean Time, Western European Time</option>
+			<option value='UP1'>(UTC +1:00) Central European Time, West Africa Time</option>
+			<option value='UP2'>(UTC +2:00) Central Africa Time, Eastern European Time, Kaliningrad Time</option>
+			<option value='UP3'>(UTC +3:00) Moscow Time, East Africa Time</option>
+			<option value='UP35'>(UTC +3:30) Iran Standard Time</option>
+			<option value='UP4'>(UTC +4:00) Azerbaijan Standard Time, Samara Time</option>
+			<option value='UP45'>(UTC +4:30) Afghanistan</option>
+			<option value='UP5'>(UTC +5:00) Pakistan Standard Time, Yekaterinburg Time</option>
+			<option value='UP55'>(UTC +5:30) Indian Standard Time, Sri Lanka Time</option>
+			<option value='UP575'>(UTC +5:45) Nepal Time</option>
+			<option value='UP6'>(UTC +6:00) Bangladesh Standard Time, Bhutan Time, Omsk Time</option>
+			<option value='UP65'>(UTC +6:30) Cocos Islands, Myanmar</option>
+			<option value='UP7'>(UTC +7:00) Krasnoyarsk Time, Cambodia, Laos, Thailand, Vietnam</option>
+			<option value='UP8'>(UTC +8:00) Australian Western Standard Time, Beijing Time, Irkutsk Time</option>
+			<option value='UP875'>(UTC +8:45) Australian Central Western Standard Time</option>
+			<option value='UP9'>(UTC +9:00) Japan Standard Time, Korea Standard Time, Yakutsk Time</option>
+			<option value='UP95'>(UTC +9:30) Australian Central Standard Time</option>
+			<option value='UP10'>(UTC +10:00) Australian Eastern Standard Time, Vladivostok Time</option>
+			<option value='UP105'>(UTC +10:30) Lord Howe Island</option>
+			<option value='UP11'>(UTC +11:00) Magadan Time, Solomon Islands, Vanuatu</option>
+			<option value='UP115'>(UTC +11:30) Norfolk Island</option>
+			<option value='UP12'>(UTC +12:00) Fiji, Gilbert Islands, Kamchatka Time, New Zealand Standard Time</option>
+			<option value='UP1275'>(UTC +12:45) Chatham Islands Standard Time</option>
+			<option value='UP13'>(UTC +13:00) Phoenix Islands Time, Tonga</option>
+			<option value='UP14'>(UTC +14:00) Line Islands</option>
 		</select>
 	</form>
 
@@ -396,66 +406,88 @@
 
 The following table indicates each timezone and its location.
 
+Note some of the location lists have been abridged for clarity and formatting.
+
 +------------+----------------------------------------------------------------+
 | Time Zone  | Location                                                       |
 +============+================================================================+
-| UM12       | (UTC - 12:00) Enitwetok, Kwajalien                             |
+| UM12       | (UTC - 12:00) Baker/Howland Island	                          |
 +------------+----------------------------------------------------------------+
-| UM11       | (UTC - 11:00) Nome, Midway Island, Samoa                       |
+| UM11       | (UTC - 11:00) Samoa Time Zone, Niue						      |
 +------------+----------------------------------------------------------------+
-| UM10       | (UTC - 10:00) Hawaii                                           |
+| UM10       | (UTC - 10:00) Hawaii-Aleutian Standard Time, Cook Islands	  |
 +------------+----------------------------------------------------------------+
-| UM9        | (UTC - 9:00) Alaska                                            |
+| UM95       | (UTC - 09:30) Marquesas Islands							      |
 +------------+----------------------------------------------------------------+
-| UM8        | (UTC - 8:00) Pacific Time                                      |
+| UM9        | (UTC - 09:00) Alaska Standard Time, Gambier Islands		      |
 +------------+----------------------------------------------------------------+
-| UM7        | (UTC - 7:00) Mountain Time                                     |
+| UM8        | (UTC - 08:00) Pacific Standard Time, Clipperton Island	      |
 +------------+----------------------------------------------------------------+
-| UM6        | (UTC - 6:00) Central Time, Mexico City                         |
+| UM7        | (UTC - 11:00) Mountain Standard Time						      |
 +------------+----------------------------------------------------------------+
-| UM5        | (UTC - 5:00) Eastern Time, Bogota, Lima, Quito                 |
+| UM6        | (UTC - 06:00) Central Standard Time						      |
 +------------+----------------------------------------------------------------+
-| UM4        | (UTC - 4:00) Atlantic Time, Caracas, La Paz                    |
+| UM5        | (UTC - 05:00) Eastern Standard Time, Western Caribbean		  |
 +------------+----------------------------------------------------------------+
-| UM25       | (UTC - 3:30) Newfoundland                                      |
+| UM45       | (UTC - 04:30) Venezuelan Standard Time					      |
 +------------+----------------------------------------------------------------+
-| UM3        | (UTC - 3:00) Brazil, Buenos Aires, Georgetown, Falkland Is.    |
+| UM4        | (UTC - 04:00) Atlantic Standard Time, Eastern Caribbean		  |
 +------------+----------------------------------------------------------------+
-| UM2        | (UTC - 2:00) Mid-Atlantic, Ascention Is., St Helena            |
+| UM35       | (UTC - 03:30) Newfoundland Standard Time					      |
 +------------+----------------------------------------------------------------+
-| UM1        | (UTC - 1:00) Azores, Cape Verde Islands                        |
+| UM3        | (UTC - 03:00) Argentina, Brazil, French Guiana, Uruguay	      |
 +------------+----------------------------------------------------------------+
-| UTC        | (UTC) Casablanca, Dublin, Edinburgh, London, Lisbon, Monrovia  |
+| UM2        | (UTC - 02:00) South Georgia/South Sandwich Islands		      |
 +------------+----------------------------------------------------------------+
-| UP1        | (UTC + 1:00) Berlin, Brussels, Copenhagen, Madrid, Paris, Rome |
+| UM1        | (UTC -1:00) Azores, Cape Verde Islands						  |
 +------------+----------------------------------------------------------------+
-| UP2        | (UTC + 2:00) Kaliningrad, South Africa, Warsaw                 |
+| UTC        | (UTC) Greenwich Mean Time, Western European Time				  |
 +------------+----------------------------------------------------------------+
-| UP3        | (UTC + 3:00) Baghdad, Riyadh, Moscow, Nairobi                  |
+| UP1        | (UTC +1:00) Central European Time, West Africa Time			  |
 +------------+----------------------------------------------------------------+
-| UP25       | (UTC + 3:30) Tehran                                            |
+| UP2        | (UTC +2:00) Central Africa Time, Eastern European Time		  |
 +------------+----------------------------------------------------------------+
-| UP4        | (UTC + 4:00) Adu Dhabi, Baku, Muscat, Tbilisi                  |
+| UP3        | (UTC +3:00) Moscow Time, East Africa Time			  		  |
 +------------+----------------------------------------------------------------+
-| UP35       | (UTC + 4:30) Kabul                                             |
+| UP35       | (UTC +3:30) Iran Standard Time								  |
 +------------+----------------------------------------------------------------+
-| UP5        | (UTC + 5:00) Islamabad, Karachi, Tashkent                      |
+| UP4        | (UTC +4:00) Azerbaijan Standard Time, Samara Time			  |
 +------------+----------------------------------------------------------------+
-| UP45       | (UTC + 5:30) Bombay, Calcutta, Madras, New Delhi               |
+| UP45       | (UTC +4:30) Afghanistan										  |
 +------------+----------------------------------------------------------------+
-| UP6        | (UTC + 6:00) Almaty, Colomba, Dhaka                            |
+| UP5        | (UTC +5:00) Pakistan Standard Time, Yekaterinburg Time		  |
 +------------+----------------------------------------------------------------+
-| UP7        | (UTC + 7:00) Bangkok, Hanoi, Jakarta                           |
+| UP55       | (UTC +5:30) Indian Standard Time, Sri Lanka Time				  |
 +------------+----------------------------------------------------------------+
-| UP8        | (UTC + 8:00) Beijing, Hong Kong, Perth, Singapore, Taipei      |
+| UP575      | (UTC +5:45) Nepal Time										  |
 +------------+----------------------------------------------------------------+
-| UP9        | (UTC + 9:00) Osaka, Sapporo, Seoul, Tokyo, Yakutsk             |
+| UP6        | (UTC +6:00) Bangladesh Standard Time, Bhutan Time, Omsk Time   |
 +------------+----------------------------------------------------------------+
-| UP85       | (UTC + 9:30) Adelaide, Darwin                                  |
+| UP65       | (UTC +6:30) Cocos Islands, Myanmar							  |
 +------------+----------------------------------------------------------------+
-| UP10       | (UTC + 10:00) Melbourne, Papua New Guinea, Sydney, Vladivostok |
+| UP7        | (UTC +7:00) Krasnoyarsk Time, Cambodia, Laos, Thailand, Vietnam|
 +------------+----------------------------------------------------------------+
-| UP11       | (UTC + 11:00) Magadan, New Caledonia, Solomon Islands          |
+| UP8        | (UTC +8:00) Australian Western Standard Time, Beijing Time	  |
 +------------+----------------------------------------------------------------+
-| UP12       | (UTC + 12:00) Auckland, Wellington, Fiji, Marshall Island      |
+| UP875      | (UTC +8:45) Australian Central Western Standard Time		      |
++------------+----------------------------------------------------------------+
+| UP9        | (UTC +9:00) Japan Standard Time, Korea Standard Time, Yakutsk  |
++------------+----------------------------------------------------------------+
+| UP95       | (UTC +9:30) Australian Central Standard Time					  |
++------------+----------------------------------------------------------------+
+| UP10       | (UTC +10:00) Australian Eastern Standard Time, Vladivostok Time|
++------------+----------------------------------------------------------------+
+| UP105      | (UTC +10:30) Lord Howe Island								  |
++------------+----------------------------------------------------------------+
+| UP11       | (UTC +11:00) Magadan Time, Solomon Islands, Vanuatu            |
++------------+----------------------------------------------------------------+
+| UP115      | (UTC +11:30) Norfolk Island									  |
++------------+----------------------------------------------------------------+
+| UP12       | (UTC +12:00) Fiji, Gilbert Islands, Kamchatka, New Zealand     |
++------------+----------------------------------------------------------------+
+| UP1275     | (UTC +12:45) Chatham Islands Standard Time					  |
++------------+----------------------------------------------------------------+
+| UP13       | (UTC +13:00) Phoenix Islands Time, Tonga						  |
++------------+----------------------------------------------------------------+
+| UP14       | (UTC +14:00) Line Islands									  |
 +------------+----------------------------------------------------------------+
diff --git a/user_guide_src/source/helpers/directory_helper.rst b/user_guide_src/source/helpers/directory_helper.rst
index fd16988..cf88732 100644
--- a/user_guide_src/source/helpers/directory_helper.rst
+++ b/user_guide_src/source/helpers/directory_helper.rst
@@ -59,7 +59,7 @@
 				[1] => config.html        
 				[database] => Array
 					(              
-						[0] => active_record.html              
+						[0] => query_builder.html              
 						[1] => binds.html              
 						[2] => configuration.html
 						[3] => connecting.html              
diff --git a/user_guide_src/source/installation/upgrade_300.rst b/user_guide_src/source/installation/upgrade_300.rst
index 4c594ab..e434e8d 100644
--- a/user_guide_src/source/installation/upgrade_300.rst
+++ b/user_guide_src/source/installation/upgrade_300.rst
@@ -31,3 +31,13 @@
 
 Use of the `$autoload['core']` config array has been deprecated as of CodeIgniter 1.4.1 and is now removed.
 Move any entries that you might have listed there to `$autoload['libraries']` instead.
+
+Step 4: Update your config/database.php
+=======================================
+
+Due to 3.0.0's renaming of Active Record to Query Builder, inside your _config/database.php_, you will
+need to rename the `$active_record` variable to `$query_builder`.
+
+    $active_group = 'default';
+    // $active_record = TRUE;
+    $query_builder = TRUE;
\ No newline at end of file
diff --git a/user_guide_src/source/libraries/javascript.rst b/user_guide_src/source/libraries/javascript.rst
index 5e80fb9..d5e09c3 100644
--- a/user_guide_src/source/libraries/javascript.rst
+++ b/user_guide_src/source/libraries/javascript.rst
@@ -86,14 +86,14 @@
 To initialize the jQuery class manually in your controller constructor,
 use the $this->load->library function::
 
-	$this->load->library('jquery');
+	$this->load->library('javascript/jquery');
 
 You may send an optional parameter to determine whether or not a script
 tag for the main jQuery file will be automatically included when loading
 the library. It will be created by default. To prevent this, load the
 library as follows::
 
-	$this->load->library('jquery', FALSE);
+	$this->load->library('javascript/jquery', FALSE);
 
 Once loaded, the jQuery library object will be available using:
 $this->jquery
diff --git a/user_guide_src/source/overview/features.rst b/user_guide_src/source/overview/features.rst
index 44db08a..8c27b14 100644
--- a/user_guide_src/source/overview/features.rst
+++ b/user_guide_src/source/overview/features.rst
@@ -15,7 +15,7 @@
 -  Model-View-Controller Based System
 -  Extremely Light Weight
 -  Full Featured database classes with support for several platforms.
--  Active Record Database Support
+-  Query Builder Database Support
 -  Form and Data Validation
 -  Security and XSS Filtering
 -  Session Management
diff --git a/user_guide_src/source/tutorial/create_news_items.rst b/user_guide_src/source/tutorial/create_news_items.rst
index 794b67e..bfaf135 100644
--- a/user_guide_src/source/tutorial/create_news_items.rst
+++ b/user_guide_src/source/tutorial/create_news_items.rst
@@ -94,7 +94,7 @@
 -----
 
 The only thing that remains is writing a method that writes the data to
-the database. You'll use the Active Record class to insert the
+the database. You'll use the Query Builder class to insert the
 information and use the input library to get the posted data. Open up
 the model created earlier and add the following:
 
diff --git a/user_guide_src/source/tutorial/index.rst b/user_guide_src/source/tutorial/index.rst
index c959d04..b1ab331 100644
--- a/user_guide_src/source/tutorial/index.rst
+++ b/user_guide_src/source/tutorial/index.rst
@@ -16,7 +16,7 @@
 -  Model-View-Controller basics
 -  Routing basics
 -  Form validation
--  Performing basic database queries using "Active Record"
+-  Performing basic database queries using "Query Builder"
 
 The entire tutorial is split up over several pages, each explaining a
 small part of the functionality of the CodeIgniter framework. You'll go
diff --git a/user_guide_src/source/tutorial/news_section.rst b/user_guide_src/source/tutorial/news_section.rst
index 38e4214..82b3e3b 100644
--- a/user_guide_src/source/tutorial/news_section.rst
+++ b/user_guide_src/source/tutorial/news_section.rst
@@ -54,7 +54,7 @@
 Now that the database and a model have been set up, you'll need a method
 to get all of our posts from our database. To do this, the database
 abstraction layer that is included with CodeIgniter — `Active
-Record <../database/active_record.html>`_ — is used. This makes it
+Record <../database/query_builder.html>`_ — is used. This makes it
 possible to write your 'queries' once and make them work on `all
 supported database systems <../general/requirements.html>`_. Add the
 following code to your model.
@@ -76,7 +76,7 @@
 With this code you can perform two different queries. You can get all
 news records, or get a news item by its `slug <#>`_. You might have
 noticed that the $slug variable wasn't sanitized before running the
-query; Active Record does this for you.
+query; Query Builder does this for you.
 
 Display the news
 ----------------