Rename the 'interbase' DB driver to 'ibase' in order to match PHP's function prefix
diff --git a/application/config/database.php b/application/config/database.php
index cb6ebad..bb0d87b 100644
--- a/application/config/database.php
+++ b/application/config/database.php
@@ -42,8 +42,9 @@
 |	['username'] The username used to connect to the database
 |	['password'] The password used to connect to the database
 |	['database'] The name of the database you want to connect to
-|	['dbdriver'] The database type. e.g.: mysql.  Currently supported:
-|				 cubrid, interbase, mssql, mysql, mysqli, oci8,
+|	['dbdriver'] The database driver. e.g.: mysqli.
+			Currently supported:
+|				 cubrid, ibase, 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  Query Builder class
diff --git a/system/database/drivers/interbase/interbase_driver.php b/system/database/drivers/ibase/ibase_driver.php
similarity index 97%
rename from system/database/drivers/interbase/interbase_driver.php
rename to system/database/drivers/ibase/ibase_driver.php
index 38d3096..a257e3c 100644
--- a/system/database/drivers/interbase/interbase_driver.php
+++ b/system/database/drivers/ibase/ibase_driver.php
@@ -38,9 +38,9 @@
  * @author		EllisLab Dev Team
  * @link		http://codeigniter.com/user_guide/database/
  */
-class CI_DB_interbase_driver extends CI_DB {
+class CI_DB_ibase_driver extends CI_DB {
 
-	public $dbdriver = 'interbase';
+	public $dbdriver = 'ibase';
 
 	// The character used to escape with
 	protected $_escape_char = '"';
@@ -443,5 +443,5 @@
 
 }
 
-/* End of file interbase_driver.php */
-/* Location: ./system/database/drivers/interbase/interbase_driver.php */
\ No newline at end of file
+/* End of file ibase_driver.php */
+/* Location: ./system/database/drivers/ibase/ibase_driver.php */
\ No newline at end of file
diff --git a/system/database/drivers/interbase/interbase_forge.php b/system/database/drivers/ibase/ibase_forge.php
similarity index 96%
rename from system/database/drivers/interbase/interbase_forge.php
rename to system/database/drivers/ibase/ibase_forge.php
index d1b006e..da75eb9 100644
--- a/system/database/drivers/interbase/interbase_forge.php
+++ b/system/database/drivers/ibase/ibase_forge.php
@@ -32,7 +32,7 @@
  * @author		EllisLab Dev Team
  * @link		http://codeigniter.com/user_guide/database/
  */
-class CI_DB_interbase_forge extends CI_DB_forge {
+class CI_DB_ibase_forge extends CI_DB_forge {
 
 	protected $_drop_table	= 'DROP TABLE %s';
 
@@ -190,5 +190,5 @@
 
 }
 
-/* End of file interbase_forge.php */
-/* Location: ./system/database/drivers/interbase/interbase_forge.php */
\ No newline at end of file
+/* End of file ibase_forge.php */
+/* Location: ./system/database/drivers/ibase/ibase_forge.php */
\ No newline at end of file
diff --git a/system/database/drivers/interbase/interbase_result.php b/system/database/drivers/ibase/ibase_result.php
similarity index 96%
rename from system/database/drivers/interbase/interbase_result.php
rename to system/database/drivers/ibase/ibase_result.php
index 5ddb6fa..4aaaaba 100644
--- a/system/database/drivers/interbase/interbase_result.php
+++ b/system/database/drivers/ibase/ibase_result.php
@@ -34,7 +34,7 @@
  * @author		EllisLab Dev Team
  * @link		http://codeigniter.com/user_guide/database/
  */
-class CI_DB_interbase_result extends CI_DB_result {
+class CI_DB_ibase_result extends CI_DB_result {
 
 	public $num_rows;
 
@@ -256,5 +256,5 @@
 
 }
 
-/* End of file interbase_result.php */
-/* Location: ./system/database/drivers/interbase/interbase_result.php */
\ No newline at end of file
+/* End of file ibase_result.php */
+/* Location: ./system/database/drivers/ibase/ibase_result.php */
\ No newline at end of file
diff --git a/system/database/drivers/interbase/interbase_utility.php b/system/database/drivers/ibase/ibase_utility.php
similarity index 90%
rename from system/database/drivers/interbase/interbase_utility.php
rename to system/database/drivers/ibase/ibase_utility.php
index 1642118..d0e84a7 100644
--- a/system/database/drivers/interbase/interbase_utility.php
+++ b/system/database/drivers/ibase/ibase_utility.php
@@ -32,7 +32,7 @@
  * @author		EllisLab Dev Team
  * @link		http://codeigniter.com/user_guide/database/
  */
-class CI_DB_interbase_utility extends CI_DB_utility {
+class CI_DB_ibase_utility extends CI_DB_utility {
 
 	protected $_list_databases	= FALSE;
 
@@ -58,5 +58,5 @@
 
 }
 
-/* End of file interbase_utility.php */
-/* Location: ./system/database/drivers/interbase/interbase_utility.php */
\ No newline at end of file
+/* End of file ibase_utility.php */
+/* Location: ./system/database/drivers/ibase/ibase_utility.php */
\ No newline at end of file
diff --git a/system/database/drivers/interbase/index.html b/system/database/drivers/ibase/index.html
similarity index 100%
rename from system/database/drivers/interbase/index.html
rename to system/database/drivers/ibase/index.html
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 9a7cec3..bfbb1bf 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -95,7 +95,7 @@
 	 - Added support for backup() in :doc:`Database Utilities <database/utilities>`.
    -  Added 'dsn' configuration setting for drivers that support DSN strings (PDO, PostgreSQL, Oracle, ODBC, CUBRID).
    -  Improved PDO database support.
-   -  Added Interbase/Firebird database support via the "interbase" driver.
+   -  Added Interbase/Firebird database support via the 'ibase' driver.
    -  Added an optional database name parameter to db_select().
    -  Replaced the _error_message() and _error_number() methods with error(), that returns an array containing the last database error code and message.
    -  Improved version() implementation so that drivers that have a native function to get the version number don't have to be defined in the core DB_driver class.