Fix rest of the helpers
diff --git a/system/helpers/security_helper.php b/system/helpers/security_helper.php
index d6f134c..6187a4a 100644
--- a/system/helpers/security_helper.php
+++ b/system/helpers/security_helper.php
@@ -37,15 +37,15 @@
// ------------------------------------------------------------------------
-/**
- * XSS Filtering
- *
- * @param string
- * @param bool whether or not the content is an image file
- * @return string
- */
if ( ! function_exists('xss_clean'))
{
+ /**
+ * XSS Filtering
+ *
+ * @param string
+ * @param bool whether or not the content is an image file
+ * @return string
+ */
function xss_clean($str, $is_image = FALSE)
{
$CI =& get_instance();
@@ -55,14 +55,14 @@
// ------------------------------------------------------------------------
-/**
- * Sanitize Filename
- *
- * @param string
- * @return string
- */
if ( ! function_exists('sanitize_filename'))
{
+ /**
+ * Sanitize Filename
+ *
+ * @param string
+ * @return string
+ */
function sanitize_filename($filename)
{
$CI =& get_instance();
@@ -72,14 +72,15 @@
// --------------------------------------------------------------------
-/**
- * Hash encode a string
- *
- * @param string
- * @return string
- */
if ( ! function_exists('do_hash'))
{
+ /**
+ * Hash encode a string
+ *
+ * @param string
+ * @param string
+ * @return string
+ */
function do_hash($str, $type = 'sha1')
{
if ( ! in_array(strtolower($type), hash_algos()))
@@ -93,14 +94,14 @@
// ------------------------------------------------------------------------
-/**
- * Strip Image Tags
- *
- * @param string
- * @return string
- */
if ( ! function_exists('strip_image_tags'))
{
+ /**
+ * Strip Image Tags
+ *
+ * @param string
+ * @return string
+ */
function strip_image_tags($str)
{
return preg_replace(array('#<img\s+.*?src\s*=\s*["\'](.+?)["\'].*?\>#', '#<img\s+.*?src\s*=\s*(.+?).*?\>#'), '\\1', $str);
@@ -109,14 +110,14 @@
// ------------------------------------------------------------------------
-/**
- * Convert PHP tags to entities
- *
- * @param string
- * @return string
- */
if ( ! function_exists('encode_php_tags'))
{
+ /**
+ * Convert PHP tags to entities
+ *
+ * @param string
+ * @return string
+ */
function encode_php_tags($str)
{
return str_replace(array('<?php', '<?PHP', '<?', '?>'), array('<?php', '<?PHP', '<?', '?>'), $str);