5 files changed, 21 insertions, 9 deletions
diff --git a/system/core/Loader.php b/system/core/Loader.php
index 2eef9979c..70c1e4154 100644
--- a/system/core/Loader.php
+++ b/system/core/Loader.php
@@ -415,7 +415,7 @@ class CI_Loader {
 	 *				to be extracted for use in the view
 	 * @param	bool	$return	Whether to return the view output
 	 *				or leave it to the Output class
-	 * @return	void
+	 * @return	void|string
 	 */
 	public function view($view, $vars = array(), $return = FALSE)
 	{
@@ -471,6 +471,20 @@ class CI_Loader {
 	// --------------------------------------------------------------------
 
 	/**
+	 * Clear Cached Variables
+	 * 
+	 * Clears the cached variables.
+	 * 
+	 * @return  void
+	 */
+	public function clear_vars()
+	{
+		$this->_ci_cached_vars = array();
+	}
+	
+	// --------------------------------------------------------------------
+
+	/**
 	 * Get Variable
 	 *
 	 * Check if a variable is set and retrieve it.
diff --git a/system/core/Output.php b/system/core/Output.php
index 7a5fb66f6..04209d920 100644
--- a/system/core/Output.php
+++ b/system/core/Output.php
@@ -847,7 +847,7 @@ class CI_Output {
 		}
 
 		// Remove CSS comments
-		$output = preg_replace('!/\*([^/][^*]*\*)*/(?!.+?["\'])!i', '', $output);
+		$output = preg_replace('@/\*([^/][^*]*\*)*/(?!.+?["\'])@i', '', $output);
 
 		// Remove Javascript inline comments
 		if ($has_tags === TRUE && strpos(strtolower($open_tag), 'script') !== FALSE)
diff --git a/system/core/Security.php b/system/core/Security.php
index 70cf3e013..368e17dc3 100644
--- a/system/core/Security.php
+++ b/system/core/Security.php
@@ -603,7 +603,7 @@ class CI_Security {
 	 */
 	public function strip_image_tags($str)
 	{
-		return preg_replace(array('#<img\s+.*?src\s*=\s*["\'](.+?)["\'].*?\>#', '#<img\s+.*?src\s*=\s*(.+?).*?\>#'), '\\1', $str);
+		return preg_replace(array('#<img[\s/]+.*?src\s*=\s*["\'](.+?)["\'].*?\>#', '#<img[\s/]+.*?src\s*=\s*(.+?).*?\>#'), '\\1', $str);
 	}
 
 	// ----------------------------------------------------------------
diff --git a/system/helpers/form_helper.php b/system/helpers/form_helper.php
index 0cc5bd157..85f1f4e01 100644
--- a/system/helpers/form_helper.php
+++ b/system/helpers/form_helper.php
@@ -328,11 +328,8 @@ if ( ! function_exists('form_dropdown'))
 		{
 			$selected = array($_POST[$name]);
 		}
-
-		if ($extra != '')
-		{
-			$extra = ' '.$extra;
-		}
+		
+		$extra = _attributes_to_string($extra);
 
 		$multiple = (count($selected) > 1 && strpos($extra, 'multiple') === FALSE) ? ' multiple="multiple"' : '';
 
diff --git a/system/libraries/Pagination.php b/system/libraries/Pagination.php
index 10fb29dbd..c6ffd03d4 100644
--- a/system/libraries/Pagination.php
+++ b/system/libraries/Pagination.php
@@ -354,7 +354,8 @@ class CI_Pagination {
 	public function create_links()
 	{
 		// If our item count or per-page total is zero there is no need to continue.
-		if ($this->total_rows === 0 OR $this->per_page === 0)
+		// Note: DO NOT change the operator to === here!
+		if ($this->total_rows == 0 OR $this->per_page == 0)
 		{
 			return '';
 		}