Merge remote-tracking branch 'upstream/develop' into develop-db-sqlite

5 files changed, 279 insertions, 340 deletions

diff --git a/system/libraries/Cache/drivers/Cache_file.php b/system/libraries/Cache/drivers/Cache_file.php
index 4a81b0422..a960730d7 100644
--- a/system/libraries/Cache/drivers/Cache_file.php
+++ b/system/libraries/Cache/drivers/Cache_file.php
@@ -99,7 +99,7 @@ class CI_Cache_file extends CI_Driver {
 
 		if (write_file($this->_cache_path.$id, serialize($contents)))
 		{
-			@chmod($this->_cache_path.$id, 0777);
+			@chmod($this->_cache_path.$id, 0660);
 			return TRUE;
 		}
 
diff --git a/system/libraries/Cart.php b/system/libraries/Cart.php
index ba8d69be2..10b5362a5 100644
--- a/system/libraries/Cart.php
+++ b/system/libraries/Cart.php
@@ -329,13 +329,6 @@ class CI_Cart {
 			return FALSE;
 		}
 
-		// Is the new quantity different than what is already saved in the cart?
-		// If it's the same there's nothing to do
-		if ($this->_cart_contents[$items['rowid']]['qty'] == $items['qty'])
-		{
-			return FALSE;
-		}
-
 		// Is the quantity zero?  If so we will remove the item from the cart.
 		// If the quantity is greater than zero we are updating
 		if ($items['qty'] == 0)
diff --git a/system/libraries/Form_validation.php b/system/libraries/Form_validation.php
index 0a6a2af0d..2ee734ae6 100644
--- a/system/libraries/Form_validation.php
+++ b/system/libraries/Form_validation.php
@@ -703,11 +703,11 @@ class CI_Form_validation {
 	 *
 	 * @param	string	the field name
 	 * @param	string
-	 * @return	void
+	 * @return	string
 	 */
 	public function set_value($field = '', $default = '')
 	{
-		if ( ! isset($this->_field_data[$field]))
+		if ( ! isset($this->_field_data[$field], $this->_field_data[$field]['postdata']))
 		{
 			return $default;
 		}
@@ -736,13 +736,9 @@ class CI_Form_validation {
 	 */
 	public function set_select($field = '', $value = '', $default = FALSE)
 	{
-		if ( ! isset($this->_field_data[$field]) OR ! isset($this->_field_data[$field]['postdata']))
+		if ( ! isset($this->_field_data[$field], $this->_field_data[$field]['postdata']))
 		{
-			if ($default === TRUE AND count($this->_field_data) === 0)
-			{
-				return ' selected="selected"';
-			}
-			return '';
+			return ($default === TRUE && count($this->_field_data) === 0) ? ' selected="selected"' : '';
 		}
 
 		$field = $this->_field_data[$field]['postdata'];
@@ -754,12 +750,9 @@ class CI_Form_validation {
 				return '';
 			}
 		}
-		else
+		elseif (($field == '' OR $value == '') OR ($field != $value))
 		{
-			if (($field == '' OR $value == '') OR ($field != $value))
-			{
-				return '';
-			}
+			return '';
 		}
 
 		return ' selected="selected"';
@@ -779,13 +772,9 @@ class CI_Form_validation {
 	 */
 	public function set_radio($field = '', $value = '', $default = FALSE)
 	{
-		if ( ! isset($this->_field_data[$field]) OR ! isset($this->_field_data[$field]['postdata']))
+		if ( ! isset($this->_field_data[$field], $this->_field_data[$field]['postdata']))
 		{
-			if ($default === TRUE AND count($this->_field_data) === 0)
-			{
-				return ' checked="checked"';
-			}
-			return '';
+			return ($default === TRUE && count($this->_field_data) === 0) ? ' checked="checked"' : '';
 		}
 
 		$field = $this->_field_data[$field]['postdata'];
@@ -869,9 +858,7 @@ class CI_Form_validation {
 			return FALSE;
 		}
 
-		$field = $_POST[$field];
-
-		return ($str === $field);
+		return ($str === $_POST[$field]);
 	}
 
 	// --------------------------------------------------------------------
@@ -908,7 +895,7 @@ class CI_Form_validation {
 	 */
 	public function min_length($str, $val)
 	{
-		if (preg_match("/[^0-9]/", $val))
+		if (preg_match('/[^0-9]/', $val))
 		{
 			return FALSE;
 		}
@@ -932,7 +919,7 @@ class CI_Form_validation {
 	 */
 	public function max_length($str, $val)
 	{
-		if (preg_match("/[^0-9]/", $val))
+		if (preg_match('/[^0-9]/', $val))
 		{
 			return FALSE;
 		}
@@ -956,7 +943,7 @@ class CI_Form_validation {
 	 */
 	public function exact_length($str, $val)
 	{
-		if (preg_match("/[^0-9]/", $val))
+		if (preg_match('/[^0-9]/', $val))
 		{
 			return FALSE;
 		}
@@ -1170,7 +1157,7 @@ class CI_Form_validation {
 	 */
 	public function is_natural_no_zero($str)
 	{
-		return ($str != 0 AND preg_match('/^[0-9]+$/', $str));
+		return ($str != 0 && preg_match('/^[0-9]+$/', $str));
 	}
 
 	// --------------------------------------------------------------------
@@ -1217,7 +1204,7 @@ class CI_Form_validation {
 			return $data;
 		}
 
-		return str_replace(array("'", '"', '<', '>'), array("&#39;", "&quot;", '&lt;', '&gt;'), stripslashes($data));
+		return str_replace(array("'", '"', '<', '>'), array('&#39;', '&quot;', '&lt;', '&gt;'), stripslashes($data));
 	}
 
 	// --------------------------------------------------------------------
@@ -1283,7 +1270,6 @@ class CI_Form_validation {
 	}
 
 }
-// END Form Validation Class
 
 /* End of file Form_validation.php */
 /* Location: ./system/libraries/Form_validation.php */
diff --git a/system/libraries/Image_lib.php b/system/libraries/Image_lib.php
index a226ae8f8..5ea830fb1 100644
--- a/system/libraries/Image_lib.php
+++ b/system/libraries/Image_lib.php
@@ -25,8 +25,6 @@
  * @filesource
  */
 
-// ------------------------------------------------------------------------
-
 /**
  * Image Manipulation class
  *
@@ -88,12 +86,6 @@ class CI_Image_lib {
 	protected $wm_use_drop_shadow	= FALSE;
 	public $wm_use_truetype	= FALSE;
 
-	/**
-	 * Constructor
-	 *
-	 * @param	string
-	 * @return	void
-	 */
 	public function __construct($props = array())
 	{
 		if (count($props) > 0)
@@ -101,7 +93,7 @@ class CI_Image_lib {
 			$this->initialize($props);
 		}
 
-		log_message('debug', "Image Lib Class Initialized");
+		log_message('debug', 'Image Lib Class Initialized');
 	}
 
 	// --------------------------------------------------------------------
@@ -158,9 +150,7 @@ class CI_Image_lib {
 	 */
 	public function initialize($props = array())
 	{
-		/*
-		 * Convert array elements into class variables
-		 */
+		// Convert array elements into class variables
 		if (count($props) > 0)
 		{
 			foreach ($props as $key => $val)
@@ -195,25 +185,18 @@ class CI_Image_lib {
 			}
 		}
 
-		/*
-		 * Is there a source image?
-		 *
-		 * If not, there's no reason to continue
-		 *
-		 */
+		// Is there a source image? If not, there's no reason to continue
 		if ($this->source_image == '')
 		{
 			$this->set_error('imglib_source_image_required');
 			return FALSE;
 		}
 
-		/*
-		 * Is getimagesize() Available?
+		/* Is getimagesize() available?
 		 *
 		 * We use it to determine the image properties (width/height).
-		 * Note:  We need to figure out how to determine image
+		 * Note: We need to figure out how to determine image
 		 * properties using ImageMagick and NetPBM
-		 *
 		 */
 		if ( ! function_exists('getimagesize'))
 		{
@@ -223,17 +206,15 @@ class CI_Image_lib {
 
 		$this->image_library = strtolower($this->image_library);
 
-		/*
-		 * Set the full server path
+		/* Set the full server path
 		 *
 		 * The source image may or may not contain a path.
 		 * Either way, we'll try use realpath to generate the
 		 * full server path in order to more reliably read it.
-		 *
 		 */
-		if (function_exists('realpath') AND @realpath($this->source_image) !== FALSE)
+		if (function_exists('realpath') && @realpath($this->source_image) !== FALSE)
 		{
-			$full_source_path = str_replace("\\", "/", realpath($this->source_image));
+			$full_source_path = str_replace('\\', '/', realpath($this->source_image));
 		}
 		else
 		{
@@ -255,64 +236,58 @@ class CI_Image_lib {
 		 *
 		 * If the user has set a "new_image" name it means
 		 * we are making a copy of the source image. If not
-		 * it means we are altering the original.  We'll
+		 * it means we are altering the original. We'll
 		 * set the destination filename and path accordingly.
-		 *
 		 */
 		if ($this->new_image == '')
 		{
 			$this->dest_image = $this->source_image;
 			$this->dest_folder = $this->source_folder;
 		}
+		elseif (strpos($this->new_image, '/') === FALSE)
+		{
+			$this->dest_folder = $this->source_folder;
+			$this->dest_image = $this->new_image;
+		}
 		else
 		{
-			if (strpos($this->new_image, '/') === FALSE)
+			if (function_exists('realpath') && @realpath($this->new_image) !== FALSE)
 			{
-				$this->dest_folder = $this->source_folder;
-				$this->dest_image = $this->new_image;
+				$full_dest_path = str_replace('\\', '/', realpath($this->new_image));
 			}
 			else
 			{
-				if (function_exists('realpath') AND @realpath($this->new_image) !== FALSE)
-				{
-					$full_dest_path = str_replace("\\", "/", realpath($this->new_image));
-				}
-				else
-				{
-					$full_dest_path = $this->new_image;
-				}
+				$full_dest_path = $this->new_image;
+			}
 
-				// Is there a file name?
-				if ( ! preg_match("#\.(jpg|jpeg|gif|png)$#i", $full_dest_path))
-				{
-					$this->dest_folder = $full_dest_path.'/';
-					$this->dest_image = $this->source_image;
-				}
-				else
-				{
-					$x = explode('/', $full_dest_path);
-					$this->dest_image = end($x);
-					$this->dest_folder = str_replace($this->dest_image, '', $full_dest_path);
-				}
+			// Is there a file name?
+			if ( ! preg_match('#\.(jpg|jpeg|gif|png)$#i', $full_dest_path))
+			{
+				$this->dest_folder = $full_dest_path.'/';
+				$this->dest_image = $this->source_image;
+			}
+			else
+			{
+				$x = explode('/', $full_dest_path);
+				$this->dest_image = end($x);
+				$this->dest_folder = str_replace($this->dest_image, '', $full_dest_path);
 			}
 		}
 
-		/*
-		 * Compile the finalized filenames/paths
+		/* Compile the finalized filenames/paths
 		 *
 		 * We'll create two master strings containing the
 		 * full server path to the source image and the
 		 * full server path to the destination image.
 		 * We'll also split the destination image name
 		 * so we can insert the thumbnail marker if needed.
-		 *
 		 */
 		if ($this->create_thumb === FALSE OR $this->thumb_marker == '')
 		{
 			$this->thumb_marker = '';
 		}
 
-		$xp	= $this->explode_name($this->dest_image);
+		$xp = $this->explode_name($this->dest_image);
 
 		$filename = $xp['name'];
 		$file_ext = $xp['ext'];
@@ -320,54 +295,55 @@ class CI_Image_lib {
 		$this->full_src_path = $this->source_folder.$this->source_image;
 		$this->full_dst_path = $this->dest_folder.$filename.$this->thumb_marker.$file_ext;
 
-		/*
-		 * Should we maintain image proportions?
+		/* Should we maintain image proportions?
 		 *
 		 * When creating thumbs or copies, the target width/height
 		 * might not be in correct proportion with the source
-		 * image's width/height.  We'll recalculate it here.
-		 *
+		 * image's width/height. We'll recalculate it here.
 		 */
-		if ($this->maintain_ratio === TRUE && ($this->width != '' AND $this->height != ''))
+		if ($this->maintain_ratio === TRUE && ($this->width != 0 OR $this->height != 0))
 		{
 			$this->image_reproportion();
 		}
 
-		/*
-		 * Was a width and height specified?
-		 *
-		 * If the destination width/height was
-		 * not submitted we will use the values
-		 * from the actual file
+		/* Was a width and height specified?
 		 *
+		 * If the destination width/height was not submitted we
+		 * will use the values from the actual file
 		 */
 		if ($this->width == '')
+		{
 			$this->width = $this->orig_width;
+		}
 
 		if ($this->height == '')
+		{
 			$this->height = $this->orig_height;
+		}
 
 		// Set the quality
-		$this->quality = trim(str_replace("%", "", $this->quality));
+		$this->quality = trim(str_replace('%', '', $this->quality));
 
-		if ($this->quality == '' OR $this->quality == 0 OR ! is_numeric($this->quality))
+		if ($this->quality == '' OR $this->quality == 0 OR ! preg_match('/^[0-9]+$/', $this->quality))
+		{
 			$this->quality = 90;
+		}
 
 		// Set the x/y coordinates
-		$this->x_axis = ($this->x_axis == '' OR ! is_numeric($this->x_axis)) ? 0 : $this->x_axis;
-		$this->y_axis = ($this->y_axis == '' OR ! is_numeric($this->y_axis)) ? 0 : $this->y_axis;
+		$this->x_axis = ($this->x_axis == '' OR ! preg_match('/^[0-9]+$/', $this->x_axis)) ? 0 : $this->x_axis;
+		$this->y_axis = ($this->y_axis == '' OR ! preg_match('/^[0-9]+$/', $this->y_axis)) ? 0 : $this->y_axis;
 
 		// Watermark-related Stuff...
 		if ($this->wm_overlay_path != '')
 		{
-			$this->wm_overlay_path = str_replace("\\", "/", realpath($this->wm_overlay_path));
+			$this->wm_overlay_path = str_replace('\\', '/', realpath($this->wm_overlay_path));
 		}
 
 		if ($this->wm_shadow_color != '')
 		{
 			$this->wm_use_drop_shadow = TRUE;
 		}
-		elseif ($this->wm_use_drop_shadow == TRUE AND $this->wm_shadow_color == '')
+		elseif ($this->wm_use_drop_shadow == TRUE && $this->wm_shadow_color == '')
 		{
 			$this->wm_use_drop_shadow = FALSE;
 		}
@@ -445,22 +421,16 @@ class CI_Image_lib {
 			$this->height	= $this->orig_height;
 		}
 
-
 		// Choose resizing function
-		if ($this->image_library == 'imagemagick' OR $this->image_library == 'netpbm')
+		if ($this->image_library === 'imagemagick' OR $this->image_library === 'netpbm')
 		{
 			$protocol = 'image_process_'.$this->image_library;
 			return $this->$protocol('rotate');
 		}
 
-		if ($this->rotation_angle == 'hor' OR $this->rotation_angle == 'vrt')
-		{
-			return $this->image_mirror_gd();
-		}
-		else
-		{
-			return $this->image_rotate_gd();
-		}
+		return ($this->rotation_angle === 'hor' OR $this->rotation_angle === 'vrt')
+			? $this->image_mirror_gd()
+			: $this->image_rotate_gd();
 	}
 
 	// --------------------------------------------------------------------
@@ -479,9 +449,9 @@ class CI_Image_lib {
 
 		// If the target width/height match the source, AND if the new file name is not equal to the old file name
 		// we'll simply make a copy of the original with the new name... assuming dynamic rendering is off.
-		if ($this->dynamic_output === FALSE AND $this->orig_width == $this->width AND $this->orig_height == $this->height)
+		if ($this->dynamic_output === FALSE && $this->orig_width == $this->width && $this->orig_height == $this->height)
 		{
-			if ($this->source_image != $this->new_image AND @copy($this->full_src_path, $this->full_dst_path))
+			if ($this->source_image != $this->new_image && @copy($this->full_src_path, $this->full_dst_path))
 			{
 				@chmod($this->full_dst_path, FILE_WRITE_MODE);
 			}
@@ -492,7 +462,7 @@ class CI_Image_lib {
 		// Let's set up our values based on the action
 		if ($action == 'crop')
 		{
-			//  Reassign the source width/height if cropping
+			// Reassign the source width/height if cropping
 			$this->orig_width  = $this->width;
 			$this->orig_height = $this->height;
 
@@ -516,14 +486,15 @@ class CI_Image_lib {
 			return FALSE;
 		}
 
-		//  Create The Image
-		//
-		//  old conditional which users report cause problems with shared GD libs who report themselves as "2.0 or greater"
-		//  it appears that this is no longer the issue that it was in 2004, so we've removed it, retaining it in the comment
-		//  below should that ever prove inaccurate.
-		//
-		//  if ($this->image_library == 'gd2' AND function_exists('imagecreatetruecolor') AND $v2_override == FALSE)
-		if ($this->image_library == 'gd2' AND function_exists('imagecreatetruecolor'))
+		/* Create the image
+		 *
+		 * Old conditional which users report cause problems with shared GD libs who report themselves as "2.0 or greater"
+		 * it appears that this is no longer the issue that it was in 2004, so we've removed it, retaining it in the comment
+		 * below should that ever prove inaccurate.
+		 *
+		 * if ($this->image_library === 'gd2' && function_exists('imagecreatetruecolor') && $v2_override == FALSE)
+		 */
+		if ($this->image_library === 'gd2' && function_exists('imagecreatetruecolor'))
 		{
 			$create	= 'imagecreatetruecolor';
 			$copy	= 'imagecopyresampled';
@@ -544,21 +515,17 @@ class CI_Image_lib {
 
 		$copy($dst_img, $src_img, 0, 0, $this->x_axis, $this->y_axis, $this->width, $this->height, $this->orig_width, $this->orig_height);
 
-		//  Show the image
+		// Show the image
 		if ($this->dynamic_output == TRUE)
 		{
 			$this->image_display_gd($dst_img);
 		}
-		else
+		elseif ( ! $this->image_save_gd($dst_img)) // Or save it
 		{
-			// Or save it
-			if ( ! $this->image_save_gd($dst_img))
-			{
-				return FALSE;
-			}
+			return FALSE;
 		}
 
-		//  Kill the file handles
+		// Kill the file handles
 		imagedestroy($dst_img);
 		imagedestroy($src_img);
 
@@ -587,42 +554,34 @@ class CI_Image_lib {
 			return FALSE;
 		}
 
-		if ( ! preg_match("/convert$/i", $this->library_path))
+		if ( ! preg_match('/convert$/i', $this->library_path))
 		{
 			$this->library_path = rtrim($this->library_path, '/').'/convert';
 		}
 
 		// Execute the command
-		$cmd = $this->library_path." -quality ".$this->quality;
+		$cmd = $this->library_path.' -quality '.$this->quality;
 
 		if ($action == 'crop')
 		{
-			$cmd .= " -crop ".$this->width."x".$this->height."+".$this->x_axis."+".$this->y_axis." \"$this->full_src_path\" \"$this->full_dst_path\" 2>&1";
+			$cmd .= ' -crop '.$this->width.'x'.$this->height.'+'.$this->x_axis.'+'.$this->y_axis.' "'.$this->full_src_path.'" "'.$this->full_dst_path .'" 2>&1';
 		}
 		elseif ($action == 'rotate')
 		{
-			switch ($this->rotation_angle)
-			{
-				case 'hor'	: $angle = '-flop';
-					break;
-				case 'vrt'	: $angle = '-flip';
-					break;
-				default		: $angle = '-rotate '.$this->rotation_angle;
-					break;
-			}
+			$angle = ($this->rotation_angle === 'hor' OR $this->rotation_angle === 'vrt')
+					? '-flop' : '-rotate '.$this->rotation_angle;
 
-			$cmd .= " ".$angle." \"$this->full_src_path\" \"$this->full_dst_path\" 2>&1";
+			$cmd .= ' '.$angle.' "'.$this->full_src_path.'" "'.$this->full_dst_path.'" 2>&1';
 		}
-		else  // Resize
+		else // Resize
 		{
-			$cmd .= " -resize ".$this->width."x".$this->height." \"$this->full_src_path\" \"$this->full_dst_path\" 2>&1";
+			$cmd .= ' -resize '.$this->width.'x'.$this->height.' "'.$this->full_src_path.'" "'.$this->full_dst_path.'" 2>&1';
 		}
 
 		$retval = 1;
-
 		@exec($cmd, $output, $retval);
 
-		//	Did it work?
+		// Did it work?
 		if ($retval > 0)
 		{
 			$this->set_error('imglib_image_process_failed');
@@ -653,7 +612,7 @@ class CI_Image_lib {
 			return FALSE;
 		}
 
-		//  Build the resizing command
+		// Build the resizing command
 		switch ($this->image_type)
 		{
 			case 1 :
@@ -700,10 +659,9 @@ class CI_Image_lib {
 		$cmd = $this->library_path.$cmd_in.' '.$this->full_src_path.' | '.$cmd_inner.' | '.$cmd_out.' > '.$this->dest_folder.'netpbm.tmp';
 
 		$retval = 1;
-
 		@exec($cmd, $output, $retval);
 
-		//  Did it work?
+		// Did it work?
 		if ($retval > 0)
 		{
 			$this->set_error('imglib_image_process_failed');
@@ -714,7 +672,7 @@ class CI_Image_lib {
 		// If you try manipulating the original it fails so
 		// we have to rename the temp file.
 		copy ($this->dest_folder.'netpbm.tmp', $this->full_dst_path);
-		unlink ($this->dest_folder.'netpbm.tmp');
+		unlink($this->dest_folder.'netpbm.tmp');
 		@chmod($this->full_dst_path, FILE_WRITE_MODE);
 
 		return TRUE;
@@ -729,7 +687,7 @@ class CI_Image_lib {
 	 */
 	public function image_rotate_gd()
 	{
-		//  Create the image handle
+		// Create the image handle
 		if ( ! ($src_img = $this->image_create_gd()))
 		{
 			return FALSE;
@@ -742,29 +700,24 @@ class CI_Image_lib {
 
 		$white	= imagecolorallocate($src_img, 255, 255, 255);
 
-		//  Rotate it!
+		// Rotate it!
 		$dst_img = imagerotate($src_img, $this->rotation_angle, $white);
 
-		//  Save the Image
+		// Show the image
 		if ($this->dynamic_output == TRUE)
 		{
 			$this->image_display_gd($dst_img);
 		}
-		else
+		elseif ( ! $this->image_save_gd($dst_img)) // ... or save it
 		{
-			// Or save it
-			if ( ! $this->image_save_gd($dst_img))
-			{
-				return FALSE;
-			}
+			return FALSE;
 		}
 
-		//  Kill the file handles
+		// Kill the file handles
 		imagedestroy($dst_img);
 		imagedestroy($src_img);
 
 		// Set the file to 777
-
 		@chmod($this->full_dst_path, FILE_WRITE_MODE);
 
 		return TRUE;
@@ -789,7 +742,7 @@ class CI_Image_lib {
 		$width  = $this->orig_width;
 		$height = $this->orig_height;
 
-		if ($this->rotation_angle == 'hor')
+		if ($this->rotation_angle === 'hor')
 		{
 			for ($i = 0; $i < $height; $i++, $left = 0, $right = $width-1)
 			{
@@ -824,21 +777,17 @@ class CI_Image_lib {
 			}
 		}
 
-		//  Show the image
+		// Show the image
 		if ($this->dynamic_output == TRUE)
 		{
 			$this->image_display_gd($src_img);
 		}
-		else
+		elseif ( ! $this->image_save_gd($src_img)) // ... or save it
 		{
-			// Or save it
-			if ( ! $this->image_save_gd($src_img))
-			{
-				return FALSE;
-			}
+			return FALSE;
 		}
 
-		//  Kill the file handles
+		// Kill the file handles
 		imagedestroy($src_img);
 
 		// Set the file to 777
@@ -860,14 +809,7 @@ class CI_Image_lib {
 	 */
 	public function watermark()
 	{
-		if ($this->wm_type == 'overlay')
-		{
-			return $this->overlay_watermark();
-		}
-		else
-		{
-			return $this->text_watermark();
-		}
+		return ($this->wm_type === 'overlay') ? $this->overlay_watermark() : $this->text_watermark();
 	}
 
 	// --------------------------------------------------------------------
@@ -885,28 +827,28 @@ class CI_Image_lib {
 			return FALSE;
 		}
 
-		//  Fetch source image properties
+		// Fetch source image properties
 		$this->get_image_properties();
 
-		//  Fetch watermark image properties
-		$props			= $this->get_image_properties($this->wm_overlay_path, TRUE);
+		// Fetch watermark image properties
+		$props		= $this->get_image_properties($this->wm_overlay_path, TRUE);
 		$wm_img_type	= $props['image_type'];
-		$wm_width		= $props['width'];
-		$wm_height		= $props['height'];
+		$wm_width	= $props['width'];
+		$wm_height	= $props['height'];
 
-		//  Create two image resources
+		// Create two image resources
 		$wm_img  = $this->image_create_gd($this->wm_overlay_path, $wm_img_type);
 		$src_img = $this->image_create_gd($this->full_src_path);
 
 		// Reverse the offset if necessary
 		// When the image is positioned at the bottom
 		// we don't want the vertical offset to push it
-		// further down.  We want the reverse, so we'll
-		// invert the offset.  Same with the horizontal
+		// further down. We want the reverse, so we'll
+		// invert the offset. Same with the horizontal
 		// offset when the image is at the right
 
-		$this->wm_vrt_alignment = strtoupper(substr($this->wm_vrt_alignment, 0, 1));
-		$this->wm_hor_alignment = strtoupper(substr($this->wm_hor_alignment, 0, 1));
+		$this->wm_vrt_alignment = strtoupper($this->wm_vrt_alignment[0]);
+		$this->wm_hor_alignment = strtoupper($this->wm_hor_alignment[0]);
 
 		if ($this->wm_vrt_alignment == 'B')
 			$this->wm_vrt_offset = $this->wm_vrt_offset * -1;
@@ -914,34 +856,32 @@ class CI_Image_lib {
 		if ($this->wm_hor_alignment == 'R')
 			$this->wm_hor_offset = $this->wm_hor_offset * -1;
 
-		//  Set the base x and y axis values
+		// Set the base x and y axis values
 		$x_axis = $this->wm_hor_offset + $this->wm_padding;
 		$y_axis = $this->wm_vrt_offset + $this->wm_padding;
 
-		//  Set the vertical position
-		switch ($this->wm_vrt_alignment)
+		// Set the vertical position
+		if ($this->wm_vrt_alignment === 'M')
 		{
-			case 'T':
-				break;
-			case 'M':	$y_axis += ($this->orig_height / 2) - ($wm_height / 2);
-				break;
-			case 'B':	$y_axis += $this->orig_height - $wm_height;
-				break;
+			$y_axis += ($this->orig_height / 2) - ($wm_height / 2);
+		}
+		elseif ($this->wm_vrt_alignment === 'B')
+		{
+			$y_axis += $this->orig_height - $wm_height;
 		}
 
-		//  Set the horizontal position
-		switch ($this->wm_hor_alignment)
+		// Set the horizontal position
+		if ($this->wm_hor_alignment === 'C')
 		{
-			case 'L':
-				break;
-			case 'C':	$x_axis += ($this->orig_width / 2) - ($wm_width / 2);
-				break;
-			case 'R':	$x_axis += $this->orig_width - $wm_width;
-				break;
+			$x_axis += ($this->orig_width / 2) - ($wm_width / 2);
+		}
+		elseif ($this->wm_hor_alignment === 'R')
+		{
+			$x_axis += $this->orig_width - $wm_width;
 		}
 
 		//  Build the finalized image
-		if ($wm_img_type == 3 AND function_exists('imagealphablending'))
+		if ($wm_img_type == 3 && function_exists('imagealphablending'))
 		{
 			@imagealphablending($src_img, TRUE);
 		}
@@ -963,12 +903,12 @@ class CI_Image_lib {
 			imagecopymerge($src_img, $wm_img, $x_axis, $y_axis, 0, 0, $wm_width, $wm_height, $this->wm_opacity);
 		}
 
-		//  Output the image
+		// Output the image
 		if ($this->dynamic_output == TRUE)
 		{
 			$this->image_display_gd($src_img);
 		}
-		elseif ( ! $this->image_save_gd($src_img))
+		elseif ( ! $this->image_save_gd($src_img)) // ... or save it
 		{
 			return FALSE;
 		}
@@ -993,20 +933,20 @@ class CI_Image_lib {
 			return FALSE;
 		}
 
-		if ($this->wm_use_truetype == TRUE AND ! file_exists($this->wm_font_path))
+		if ($this->wm_use_truetype == TRUE && ! file_exists($this->wm_font_path))
 		{
 			$this->set_error('imglib_missing_font');
 			return FALSE;
 		}
 
-		//  Fetch source image properties
+		// Fetch source image properties
 		$this->get_image_properties();
 
 		// Reverse the vertical offset
 		// When the image is positioned at the bottom
 		// we don't want the vertical offset to push it
-		// further down.  We want the reverse, so we'll
-		// invert the offset.  Note: The horizontal
+		// further down. We want the reverse, so we'll
+		// invert the offset. Note: The horizontal
 		// offset flips itself automatically
 
 		if ($this->wm_vrt_alignment == 'B')
@@ -1039,49 +979,39 @@ class CI_Image_lib {
 		$x_axis = $this->wm_hor_offset + $this->wm_padding;
 		$y_axis = $this->wm_vrt_offset + $this->wm_padding;
 
-		// Set verticle alignment
 		if ($this->wm_use_drop_shadow == FALSE)
 			$this->wm_shadow_distance = 0;
 
 		$this->wm_vrt_alignment = strtoupper(substr($this->wm_vrt_alignment, 0, 1));
 		$this->wm_hor_alignment = strtoupper(substr($this->wm_hor_alignment, 0, 1));
 
-		switch ($this->wm_vrt_alignment)
+		// Set verticle alignment
+		if ($this->wm_vrt_alignment === 'M')
 		{
-			case 'T':
-				break;
-			case 'M':	$y_axis += ($this->orig_height/2)+($fontheight/2);
-				break;
-			case 'B':	$y_axis += ($this->orig_height - $fontheight - $this->wm_shadow_distance - ($fontheight/2));
-				break;
+			$y_axis += ($this->orig_height / 2) + ($fontheight / 2);
+		}
+		elseif ($this->wm_vrt_alignment === 'B')
+		{
+			$y_axis += $this->orig_height - $fontheight - $this->wm_shadow_distance - ($fontheight / 2);
 		}
 
 		$x_shad = $x_axis + $this->wm_shadow_distance;
 		$y_shad = $y_axis + $this->wm_shadow_distance;
 
-		// Set horizontal alignment
-		switch ($this->wm_hor_alignment)
-		{
-			case 'L':
-				break;
-			case 'R':
-				if ($this->wm_use_drop_shadow)
-				{
-					$x_shad += ($this->orig_width - $fontwidth*strlen($this->wm_text));
-					$x_axis += ($this->orig_width - $fontwidth*strlen($this->wm_text));
-				}
-				break;
-			case 'C':
-				if ($this->wm_use_drop_shadow)
-				{
-					$x_shad += floor(($this->orig_width - $fontwidth*strlen($this->wm_text))/2);
-					$x_axis += floor(($this->orig_width - $fontwidth*strlen($this->wm_text))/2);
-				}
-				break;
-		}
-
 		if ($this->wm_use_drop_shadow)
 		{
+			// Set horizontal alignment
+			if ($this->wm_hor_alignment === 'R')
+			{
+				$x_shad += $this->orig_width - ($fontwidth * strlen($this->wm_text));
+				$x_axis += $this->orig_width - ($fontwidth * strlen($this->wm_text));
+			}
+			elseif ($this->wm_hor_alignment === 'C')
+			{
+				$x_shad += floor(($this->orig_width - ($fontwidth * strlen($this->wm_text))) / 2);
+				$x_axis += floor(($this->orig_width - ($fontwidth * strlen($this->wm_text))) / 2);
+			}
+
 			/* Set RGB values for text and shadow
 			 *
 			 * First character is #, so we don't really need it.
@@ -1093,7 +1023,7 @@ class CI_Image_lib {
 			$drp_color = str_split(substr($this->wm_shadow_color, 1, 6), 2);
 			$drp_color = imagecolorclosest($src_img, hexdec($drp_color[0]), hexdec($drp_color[1]), hexdec($drp_color[2]));
 
-			//  Add the text to the source image
+			// Add the text to the source image
 			if ($this->wm_use_truetype)
 			{
 				imagettftext($src_img, $this->wm_font_size, 0, $x_shad, $y_shad, $drp_color, $this->wm_font_path, $this->wm_text);
@@ -1106,7 +1036,7 @@ class CI_Image_lib {
 			}
 		}
 
-		//  Output the final image
+		// Output the final image
 		if ($this->dynamic_output == TRUE)
 		{
 			$this->image_display_gd($src_img);
@@ -1250,8 +1180,8 @@ class CI_Image_lib {
 	 */
 	public function image_display_gd($resource)
 	{
-		header("Content-Disposition: filename={$this->source_image};");
-		header("Content-Type: {$this->mime_type}");
+		header('Content-Disposition: filename='.$this->source_image.';');
+		header('Content-Type: '.$this->mime_type);
 		header('Content-Transfer-Encoding: binary');
 		header('Last-Modified: '.gmdate('D, d M Y H:i:s', time()).' GMT');
 
@@ -1284,33 +1214,43 @@ class CI_Image_lib {
 	 */
 	public function image_reproportion()
 	{
-		if ( ! is_numeric($this->width) OR ! is_numeric($this->height) OR $this->width == 0 OR $this->height == 0)
-			return;
-
-		if ( ! is_numeric($this->orig_width) OR ! is_numeric($this->orig_height) OR $this->orig_width == 0 OR $this->orig_height == 0)
-			return;
-
-		$new_width	= ceil($this->orig_width*$this->height/$this->orig_height);
-		$new_height	= ceil($this->width*$this->orig_height/$this->orig_width);
-
-		$ratio = (($this->orig_height/$this->orig_width) - ($this->height/$this->width));
-
-		if ($this->master_dim != 'width' AND $this->master_dim != 'height')
+		if (($this->width == 0 && $this->height == 0) OR $this->orig_width == 0 OR $this->orig_height == 0
+			OR ( ! preg_match('/^[0-9]+$/', $this->width) && ! preg_match('/^[0-9]+$/', $this->height))
+			OR ! preg_match('/^[0-9]+$/', $this->orig_width) OR ! preg_match('/^[0-9]+$/', $this->orig_height))
 		{
-			$this->master_dim = ($ratio < 0) ? 'width' : 'height';
+			return;
 		}
 
-		if (($this->width != $new_width) AND ($this->height != $new_height))
+		// Sanitize so we don't call preg_match() anymore
+		$this->width = (int) $this->width;
+		$this->height = (int) $this->height;
+
+		if ($this->master_dim !== 'width' && $this->master_dim !== 'height')
 		{
-			if ($this->master_dim == 'height')
+			if ($this->width > 0 && $this->height > 0)
 			{
-				$this->width = $new_width;
+				$this->master_dim = ((($this->orig_height/$this->orig_width) - ($this->height/$this->width)) < 0)
+							? 'width' : 'height';
 			}
 			else
 			{
-				$this->height = $new_height;
+				$this->master_dim = ($this->height === 0) ? 'width' : 'height';
 			}
 		}
+		elseif (($this->master_dim === 'width' && $this->width === 0)
+			OR ($this->master_dim === 'height' && $this->height === 0))
+		{
+			return;
+		}
+
+		if ($this->master_dim === 'width')
+		{
+			$this->height = (int) ceil($this->width*$this->orig_height/$this->orig_width);
+		}
+		else
+		{
+			$this->width = (int) ceil($this->orig_width*$this->height/$this->orig_height);
+		}
 	}
 
 	// --------------------------------------------------------------------
@@ -1329,7 +1269,9 @@ class CI_Image_lib {
 		// find a way to determine this using IM or NetPBM
 
 		if ($path == '')
+		{
 			$path = $this->full_src_path;
+		}
 
 		if ( ! file_exists($path))
 		{
@@ -1367,15 +1309,15 @@ class CI_Image_lib {
 	 * Size calculator
 	 *
 	 * This function takes a known width x height and
-	 * recalculates it to a new size.  Only one
+	 * recalculates it to a new size. Only one
 	 * new variable needs to be known
 	 *
 	 *	$props = array(
-	 *					'width'			=> $width,
-	 *					'height'		=> $height,
-	 *					'new_width'		=> 40,
-	 *					'new_height'	=> ''
-	 *				  );
+	 *			'width'		=> $width,
+	 *			'height'	=> $height,
+	 *			'new_width'	=> 40,
+	 *			'new_height'	=> ''
+	 *		);
 	 *
 	 * @param	array
 	 * @return	array
@@ -1419,7 +1361,7 @@ class CI_Image_lib {
 	 *
 	 * This is a helper function that extracts the extension
 	 * from the source_image.  This function lets us deal with
-	 * source_images with multiple periods, like:  my.cool.jpg
+	 * source_images with multiple periods, like: my.cool.jpg
 	 * It returns an associative array with two elements:
 	 * $array['ext']  = '.jpg';
 	 * $array['name'] = 'my.cool';
@@ -1449,7 +1391,7 @@ class CI_Image_lib {
 			/* As it is stated in the PHP manual, dl() is not always available
 			 * and even if so - it could generate an E_WARNING message on failure
 			 */
-			return (function_exists('dl') AND @dl('gd.so'));
+			return (function_exists('dl') && @dl('gd.so'));
 		}
 
 		return TRUE;
@@ -1467,9 +1409,7 @@ class CI_Image_lib {
 		if (function_exists('gd_info'))
 		{
 			$gd_version = @gd_info();
-			$gd_version = preg_replace("/\D/", "", $gd_version['GD Version']);
-
-			return $gd_version;
+			return preg_replace('/\D/', '', $gd_version['GD Version']);
 		}
 
 		return FALSE;
@@ -1516,11 +1456,10 @@ class CI_Image_lib {
 	 */
 	public function display_errors($open = '<p>', $close = '</p>')
 	{
-		return (count($this->error_msg) > 0) ? $open . implode($close . $open, $this->error_msg) . $close : '';
+		return (count($this->error_msg) > 0) ? $open.implode($close.$open, $this->error_msg).$close : '';
 	}
 
 }
-// END Image_lib Class
 
 /* End of file Image_lib.php */
 /* Location: ./system/libraries/Image_lib.php */
diff --git a/system/libraries/Session.php b/system/libraries/Session.php
index 04103a4d9..66b39a6a2 100644
--- a/system/libraries/Session.php
+++ b/system/libraries/Session.php
@@ -25,8 +25,6 @@
  * @filesource
  */
 
-// ------------------------------------------------------------------------
-
 /**
  * Session Class
  *
@@ -67,7 +65,7 @@ class CI_Session {
 	 */
 	public function __construct($params = array())
 	{
-		log_message('debug', "Session Class Initialized");
+		log_message('debug', 'Session Class Initialized');
 
 		// Set the super object to a local variable for use throughout the class
 		$this->CI =& get_instance();
@@ -93,14 +91,14 @@ class CI_Session {
 			$this->CI->load->library('encrypt');
 		}
 
-		// Are we using a database?  If so, load it
-		if ($this->sess_use_database === TRUE AND $this->sess_table_name != '')
+		// Are we using a database? If so, load it
+		if ($this->sess_use_database === TRUE && $this->sess_table_name != '')
 		{
 			$this->CI->load->database();
 		}
 
-		// Set the "now" time.  Can either be GMT or server time, based on the
-		// config prefs.  We use this to set the "last activity" time
+		// Set the "now" time. Can either be GMT or server time, based on the
+		// config prefs. We use this to set the "last activity" time
 		$this->now = $this->_get_time();
 
 		// Set the session length. If the session expiration is
@@ -114,7 +112,7 @@ class CI_Session {
 		$this->sess_cookie_name = $this->cookie_prefix.$this->sess_cookie_name;
 
 		// Run the Session routine. If a session doesn't exist we'll
-		// create a new one.  If it does, we'll update it.
+		// create a new one. If it does, we'll update it.
 		if ( ! $this->sess_read())
 		{
 			$this->sess_create();
@@ -133,7 +131,7 @@ class CI_Session {
 		// Delete expired sessions if necessary
 		$this->_sess_gc();
 
-		log_message('debug', "Session routines successfully run");
+		log_message('debug', 'Session routines successfully run');
 	}
 
 	// --------------------------------------------------------------------
@@ -166,7 +164,7 @@ class CI_Session {
 			$hash	 = substr($session, strlen($session)-32); // get last 32 chars
 			$session = substr($session, 0, strlen($session)-32);
 
-			// Does the md5 hash match?  This is to prevent manipulation of session data in userspace
+			// Does the md5 hash match? This is to prevent manipulation of session data in userspace
 			if ($hash !==  md5($session.$this->encryption_key))
 			{
 				log_message('error', 'The session cookie data did not match what was expected. This could be a possible hacking attempt.');
@@ -179,7 +177,7 @@ class CI_Session {
 		$session = $this->_unserialize($session);
 
 		// Is the session data we unserialized an array with the correct format?
-		if ( ! is_array($session) OR ! isset($session['session_id']) OR ! isset($session['ip_address']) OR ! isset($session['user_agent']) OR ! isset($session['last_activity']))
+		if ( ! is_array($session) OR ! isset($session['session_id'], $session['ip_address'], $session['user_agent'], $session['last_activity']))
 		{
 			$this->sess_destroy();
 			return FALSE;
@@ -192,15 +190,15 @@ class CI_Session {
 			return FALSE;
 		}
 
-		// Does the IP Match?
-		if ($this->sess_match_ip == TRUE AND $session['ip_address'] !== $this->CI->input->ip_address())
+		// Does the IP match?
+		if ($this->sess_match_ip == TRUE && $session['ip_address'] !== $this->CI->input->ip_address())
 		{
 			$this->sess_destroy();
 			return FALSE;
 		}
 
 		// Does the User Agent Match?
-		if ($this->sess_match_useragent == TRUE AND trim($session['user_agent']) !== trim(substr($this->CI->input->user_agent(), 0, 120)))
+		if ($this->sess_match_useragent == TRUE && trim($session['user_agent']) !== trim(substr($this->CI->input->user_agent(), 0, 120)))
 		{
 			$this->sess_destroy();
 			return FALSE;
@@ -223,7 +221,7 @@ class CI_Session {
 
 			$query = $this->CI->db->get($this->sess_table_name);
 
-			// No result?  Kill it!
+			// No result? Kill it!
 			if ($query->num_rows() === 0)
 			{
 				$this->sess_destroy();
@@ -232,7 +230,7 @@ class CI_Session {
 
 			// Is there custom data?  If so, add it to the main session array
 			$row = $query->row();
-			if (isset($row->user_data) AND $row->user_data != '')
+			if (isset($row->user_data) && $row->user_data != '')
 			{
 				$custom_data = $this->_unserialize($row->user_data);
 
@@ -282,7 +280,7 @@ class CI_Session {
 			$cookie_userdata[$val] = $this->userdata[$val];
 		}
 
-		// Did we find any custom data?  If not, we turn the empty array into a string
+		// Did we find any custom data? If not, we turn the empty array into a string
 		// since there's no reason to serialize and store an empty array in the DB
 		if (count($custom_userdata) === 0)
 		{
@@ -298,7 +296,7 @@ class CI_Session {
 		$this->CI->db->where('session_id', $this->userdata['session_id']);
 		$this->CI->db->update($this->sess_table_name, array('last_activity' => $this->userdata['last_activity'], 'user_data' => $custom_userdata));
 
-		// Write the cookie.  Notice that we manually pass the cookie data array to the
+		// Write the cookie. Notice that we manually pass the cookie data array to the
 		// _set_cookie() function. Normally that function will store $this->userdata, but
 		// in this case that array contains custom data, which we do not want in the cookie.
 		$this->_set_cookie($cookie_userdata);
@@ -324,13 +322,12 @@ class CI_Session {
 		$sessid .= $this->CI->input->ip_address();
 
 		$this->userdata = array(
-							'session_id'	=> md5(uniqid($sessid, TRUE)),
-							'ip_address'	=> $this->CI->input->ip_address(),
-							'user_agent'	=> substr($this->CI->input->user_agent(), 0, 120),
-							'last_activity'	=> $this->now,
-							'user_data'		=> ''
-							);
-
+					'session_id'	=> md5(uniqid($sessid, TRUE)),
+					'ip_address'	=> $this->CI->input->ip_address(),
+					'user_agent'	=> substr($this->CI->input->user_agent(), 0, 120),
+					'last_activity'	=> $this->now,
+					'user_data'	=> ''
+				);
 
 		// Save the data to the DB if needed
 		if ($this->sess_use_database === TRUE)
@@ -357,6 +354,35 @@ class CI_Session {
 			return;
 		}
 
+		// _set_cookie() will handle this for us if we aren't using database sessions
+		// by pushing all userdata to the cookie.
+		$cookie_data = NULL;
+
+		/* Changing the session ID during an AJAX call causes problems,
+		 * so we'll only update our last_activity
+		 */
+		if ($this->CI->input->is_ajax_request())
+		{
+			$this->userdata['last_activity'] = $this->now;
+
+			// Update the session ID and last_activity field in the DB if needed
+			if ($this->sess_use_database === TRUE)
+			{
+				// set cookie explicitly to only have our session data
+				$cookie_data = array();
+				foreach (array('session_id','ip_address','user_agent','last_activity') as $val)
+				{
+					$cookie_data[$val] = $this->userdata[$val];
+				}
+
+				$this->CI->db->query($this->CI->db->update_string($this->sess_table_name,
+											array('last_activity' => $this->userdata['last_activity']),
+											array('session_id' => $this->userdata['session_id'])));
+			}
+
+			return $this->_set_cookie($cookie_data);
+		}
+
 		// Save the old session id so we know which record to
 		// update in the database if we need it
 		$old_sessid = $this->userdata['session_id'];
@@ -374,10 +400,6 @@ class CI_Session {
 		$this->userdata['session_id'] = $new_sessid = md5(uniqid($new_sessid, TRUE));
 		$this->userdata['last_activity'] = $this->now;
 
-		// _set_cookie() will handle this for us if we aren't using database sessions
-		// by pushing all userdata to the cookie.
-		$cookie_data = NULL;
-
 		// Update the session ID and last_activity field in the DB if needed
 		if ($this->sess_use_database === TRUE)
 		{
@@ -405,7 +427,7 @@ class CI_Session {
 	public function sess_destroy()
 	{
 		// Kill the session DB row
-		if ($this->sess_use_database === TRUE AND isset($this->userdata['session_id']))
+		if ($this->sess_use_database === TRUE && isset($this->userdata['session_id']))
 		{
 			$this->CI->db->where('session_id', $this->userdata['session_id']);
 			$this->CI->db->delete($this->sess_table_name);
@@ -413,13 +435,13 @@ class CI_Session {
 
 		// Kill the cookie
 		setcookie(
-					$this->sess_cookie_name,
-					addslashes(serialize(array())),
-					($this->now - 31500000),
-					$this->cookie_path,
-					$this->cookie_domain,
-					0
-				);
+				$this->sess_cookie_name,
+				addslashes(serialize(array())),
+				($this->now - 31500000),
+				$this->cookie_path,
+				$this->cookie_domain,
+				0
+			);
 	}
 
 	// --------------------------------------------------------------------
@@ -535,7 +557,7 @@ class CI_Session {
 	 */
 	public function keep_flashdata($key)
 	{
-		// 'old' flashdata gets removed.  Here we mark all
+		// 'old' flashdata gets removed. Here we mark all
 		// flashdata as 'new' to preserve it from _flashdata_sweep()
 		// Note the function will return FALSE if the $key
 		// provided cannot be found
@@ -586,7 +608,6 @@ class CI_Session {
 	 *
 	 * @return	void
 	 */
-
 	protected function _flashdata_sweep()
 	{
 		$userdata = $this->all_userdata();
@@ -609,13 +630,9 @@ class CI_Session {
 	 */
 	protected function _get_time()
 	{
-		if (strtolower($this->time_reference) === 'gmt')
-		{
-			$now = time();
-			return mktime(gmdate('H', $now), gmdate('i', $now), gmdate('s', $now), gmdate('m', $now), gmdate('d', $now), gmdate('Y', $now));
-		}
-
-		return time();
+		return (strtolower($this->time_reference) === 'gmt')
+			? mktime(gmdate('H'), gmdate('i'), gmdate('s'), gmdate('m'), gmdate('d'), gmdate('Y'))
+			: time();
 	}
 
 	// --------------------------------------------------------------------
@@ -649,13 +666,13 @@ class CI_Session {
 
 		// Set the cookie
 		setcookie(
-					$this->sess_cookie_name,
-					$cookie_data,
-					$expire,
-					$this->cookie_path,
-					$this->cookie_domain,
-					$this->cookie_secure
-				);
+				$this->sess_cookie_name,
+				$cookie_data,
+				$expire,
+				$this->cookie_path,
+				$this->cookie_domain,
+				$this->cookie_secure
+			);
 	}
 
 	// --------------------------------------------------------------------
@@ -687,8 +704,11 @@ class CI_Session {
 	 *
 	 * This function converts any slashes found into a temporary marker
 	 *
+	 * @param	string
+	 * @param	string
+	 * @return	void
 	 */
-	function _escape_slashes(&$val, $key)
+	protected function _escape_slashes(&$val, $key)
 	{
 		if (is_string($val))
 		{
@@ -725,6 +745,9 @@ class CI_Session {
 	 *
 	 * This function converts any slash markers back into actual slashes
 	 *
+	 * @param	string
+	 * @param	string
+	 * @return	void
 	 */
 	protected function _unescape_slashes(&$val, $key)
 	{
@@ -763,9 +786,7 @@ class CI_Session {
 		}
 	}
 
-
 }
-// END Session Class
 
 /* End of file Session.php */
 /* Location: ./system/libraries/Session.php */