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

31 files changed, 358 insertions, 80 deletions

diff --git a/system/libraries/Cache/Cache.php b/system/libraries/Cache/Cache.php
index 2e78a6660..7642a5270 100644
--- a/system/libraries/Cache/Cache.php
+++ b/system/libraries/Cache/Cache.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
@@ -39,20 +39,17 @@
 class CI_Cache extends CI_Driver_Library {
 
 	protected $valid_drivers 	= array(
-		'cache_apc', 'cache_file', 'cache_memcached', 'cache_dummy'
-	);
-
-	protected $_cache_path		= NULL;		// Path of cache files (if file-based cache)
-	protected $_adapter			= 'dummy';
+						'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';
 	protected $_backup_driver;
 
-	// ------------------------------------------------------------------------
-
-	/**
-	 * Constructor
-	 *
-	 * @param array
-	 */
 	public function __construct($config = array())
 	{
 		if ( ! empty($config))
diff --git a/system/libraries/Cache/drivers/Cache_apc.php b/system/libraries/Cache/drivers/Cache_apc.php
index a3dd46978..c387a30fc 100644
--- a/system/libraries/Cache/drivers/Cache_apc.php
+++ b/system/libraries/Cache/drivers/Cache_apc.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
diff --git a/system/libraries/Cache/drivers/Cache_dummy.php b/system/libraries/Cache/drivers/Cache_dummy.php
index fcd55da39..c9767e401 100644
--- a/system/libraries/Cache/drivers/Cache_dummy.php
+++ b/system/libraries/Cache/drivers/Cache_dummy.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
diff --git a/system/libraries/Cache/drivers/Cache_file.php b/system/libraries/Cache/drivers/Cache_file.php
index a960730d7..c0be0def4 100644
--- a/system/libraries/Cache/drivers/Cache_file.php
+++ b/system/libraries/Cache/drivers/Cache_file.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
diff --git a/system/libraries/Cache/drivers/Cache_memcached.php b/system/libraries/Cache/drivers/Cache_memcached.php
index ffe6f2ff7..b8f2d7e4c 100644
--- a/system/libraries/Cache/drivers/Cache_memcached.php
+++ b/system/libraries/Cache/drivers/Cache_memcached.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
diff --git a/system/libraries/Cache/drivers/Cache_wincache.php b/system/libraries/Cache/drivers/Cache_wincache.php
new file mode 100644
index 000000000..df619d4e6
--- /dev/null
+++ b/system/libraries/Cache/drivers/Cache_wincache.php
@@ -0,0 +1,165 @@
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.1.6 or newer
+ *
+ * NOTICE OF LICENSE
+ *
+ * Licensed under the Open Software License version 3.0
+ *
+ * This source file is subject to the Open Software License (OSL 3.0) that is
+ * bundled with this package in the files license.txt / license.rst.  It is
+ * also available through the world wide web at this URL:
+ * http://opensource.org/licenses/OSL-3.0
+ * If you did not receive a copy of the license and are unable to obtain it
+ * through the world wide web, please send an email to
+ * licensing@ellislab.com so we can send you a copy immediately.
+ *
+ * @package		CodeIgniter
+ * @author		EllisLab Dev Team
+ * @copyright	Copyright (c) 2006 - 2012 EllisLab, Inc.
+ * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
+ * @link		http://codeigniter.com
+ * @since		Version 3.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * CodeIgniter Wincache Caching Class
+ *
+ * Read more about Wincache functions here:
+ * http://www.php.net/manual/en/ref.wincache.php
+ *
+ * @package		CodeIgniter
+ * @subpackage	Libraries
+ * @category	Core
+ * @author		Mike Murkovic
+ * @link
+ */
+
+class CI_Cache_wincache extends CI_Driver {
+
+	/**
+	 * Get
+	 *
+	 * Look for a value in the cache. If it exists, return the data,
+	 * if not, return FALSE
+	 *
+	 * @param	string
+	 * @return	mixed	value that is stored/FALSE on failure
+	 */
+	public function get($id)
+	{
+		$success = FALSE;
+		$data = wincache_ucache_get($id, $success);
+
+		// Success returned by reference from wincache_ucache_get()
+		return ($success) ? $data : FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Save
+	 *
+	 * @param	string	Unique Key
+	 * @param	mixed	Data to store
+	 * @param	int	Length of time (in seconds) to cache the data
+	 * @return 	bool	true on success/false on failure
+	 */
+	public function save($id, $data, $ttl = 60)
+	{
+		return wincache_ucache_set($id, $data, $ttl);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Delete from Cache
+	 *
+	 * @param	mixed	unique identifier of the item in the cache
+	 * @param	bool	true on success/false on failure
+	 */
+	public function delete($id)
+	{
+		return wincache_ucache_delete($id);
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Clean the cache
+	 *
+	 * @return	bool	false on failure/true on success
+	 */
+	public function clean()
+	{
+		return wincache_ucache_clear();
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Cache Info
+	 *
+	 * @return	mixed	array on success, false on failure
+	 */
+	 public function cache_info()
+	 {
+		 return wincache_ucache_info(TRUE);
+	 }
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * Get Cache Metadata
+	 *
+	 * @param	mixed	key to get cache metadata on
+	 * @return	mixed	array on success/false on failure
+	 */
+	public function get_metadata($id)
+	{
+		if ($stored = wincache_ucache_info(FALSE, $id))
+		{
+			$age = $stored['ucache_entries'][1]['age_seconds'];
+			$ttl = $stored['ucache_entries'][1]['ttl_seconds'];
+			$hitcount = $stored['ucache_entries'][1]['hitcount'];
+
+			return array(
+				'expire'    => $ttl - $age,
+				'hitcount'  => $hitcount,
+				'age'       => $age,
+				'ttl'       => $ttl
+			);
+		}
+
+		return FALSE;
+	}
+
+	// ------------------------------------------------------------------------
+
+	/**
+	 * is_supported()
+	 *
+	 * Check to see if WinCache is available on this system, bail if it isn't.
+	 *
+	 * @return	bool
+	 */
+	public function is_supported()
+	{
+		if ( ! extension_loaded('wincache'))
+		{
+			log_message('error', 'The Wincache PHP extension must be loaded to use Wincache Cache.');
+			return FALSE;
+		}
+
+		return TRUE;
+	}
+
+}
+
+/* End of file Cache_wincache.php */
+/* Location: ./system/libraries/Cache/drivers/Cache_wincache.php */
diff --git a/system/libraries/Calendar.php b/system/libraries/Calendar.php
index a05a7babf..6c04de8a2 100644
--- a/system/libraries/Calendar.php
+++ b/system/libraries/Calendar.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
diff --git a/system/libraries/Cart.php b/system/libraries/Cart.php
index 10b5362a5..60a1e52fe 100644
--- a/system/libraries/Cart.php
+++ b/system/libraries/Cart.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
diff --git a/system/libraries/Driver.php b/system/libraries/Driver.php
index 4e8944311..9a073b336 100644
--- a/system/libraries/Driver.php
+++ b/system/libraries/Driver.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
diff --git a/system/libraries/Email.php b/system/libraries/Email.php
index c8a5b41af..f30fe40b6 100644
--- a/system/libraries/Email.php
+++ b/system/libraries/Email.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
@@ -1359,6 +1359,7 @@ class CI_Email {
 		if ( ! $this->$method())
 		{
 			$this->_set_error_message('lang:email_send_failure_' . ($this->_get_protocol() === 'mail' ? 'phpmail' : $this->_get_protocol()));
+			return FALSE;
 		}
 
 		$this->_set_error_message('lang:email_sent', $this->_get_protocol());
@@ -1433,8 +1434,10 @@ class CI_Email {
 			return FALSE;
 		}
 
-		$this->_smtp_connect();
-		$this->_smtp_authenticate();
+		if ( ! $this->_smtp_connect() OR ! $this->_smtp_authenticate())
+		{
+			return FALSE;
+		}
 
 		$this->_send_command('from', $this->clean_email($this->_headers['From']));
 
diff --git a/system/libraries/Encrypt.php b/system/libraries/Encrypt.php
index 0b0618991..b29eb470e 100644
--- a/system/libraries/Encrypt.php
+++ b/system/libraries/Encrypt.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
diff --git a/system/libraries/Form_validation.php b/system/libraries/Form_validation.php
index 2ee734ae6..9491f354c 100644
--- a/system/libraries/Form_validation.php
+++ b/system/libraries/Form_validation.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
@@ -47,14 +47,24 @@ class CI_Form_validation {
 	protected $_error_suffix		= '</p>';
 	protected $error_string			= '';
 	protected $_safe_form_data		= FALSE;
+	protected $validation_data		= array();
 
-	/**
-	 * Constructor
-	 */
 	public function __construct($rules = array())
 	{
 		$this->CI =& get_instance();
 
+		// applies delimiters set in config file.
+		if (isset($rules['error_prefix']))
+		{
+			$this->_error_prefix = $rules['error_prefix'];
+			unset($rules['error_prefix']);
+		}
+		if (isset($rules['error_suffix']))
+		{
+			$this->_error_suffix = $rules['error_suffix'];
+			unset($rules['error_suffix']);
+		}
+		
 		// Validation rules can be stored in a config file.
 		$this->_config_rules = $rules;
 
@@ -62,12 +72,12 @@ class CI_Form_validation {
 		$this->CI->load->helper('form');
 
 		// Set the character encoding in MB.
-		if (function_exists('mb_internal_encoding'))
+		if (MB_ENABLED === TRUE)
 		{
 			mb_internal_encoding($this->CI->config->item('charset'));
 		}
 
-		log_message('debug', "Form Validation Class Initialized");
+		log_message('debug', 'Form Validation Class Initialized');
 	}
 
 	// --------------------------------------------------------------------
@@ -85,7 +95,8 @@ class CI_Form_validation {
 	public function set_rules($field, $label = '', $rules = '')
 	{
 		// No reason to set rules if we have no POST data
-		if (count($_POST) === 0)
+		// or a validation array has not been specified
+		if ($this->CI->input->method() !== 'post' && empty($this->validation_data))
 		{
 			return $this;
 		}
@@ -162,10 +173,33 @@ class CI_Form_validation {
 	// --------------------------------------------------------------------
 
 	/**
+	 * By default, form validation uses the $_POST array to validate
+	 *
+	 * If an array is set through this method, then this array will
+	 * be used instead of the $_POST array
+	 *
+	 * Note that if you are validating multiple arrays, then the
+	 * reset_validation() function should be called after validating
+	 * each array due to the limitations of CI's singleton
+	 *
+	 * @param	array	$data
+	 * @return	void
+	 */
+	public function set_data($data = '')
+	{
+		if ( ! empty($data) && is_array($data))
+		{
+			$this->validation_data = $data;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
 	 * Set Error Message
 	 *
 	 * Lets users set their own error messages on the fly.  Note:  The key
-	 * name has to match the  function name that it corresponds to.
+	 * name has to match the function name that it corresponds to.
 	 *
 	 * @param	string
 	 * @param	string
@@ -235,6 +269,20 @@ class CI_Form_validation {
 	// --------------------------------------------------------------------
 
 	/**
+	 * Get Array of Error Messages
+	 *
+	 * Returns the error messages as an array
+	 *
+	 * @return	array
+	 */
+	public function error_array()
+	{
+		return $this->_error_array;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
 	 * Error String
 	 *
 	 * Returns the error messages as a string, wrapped in the error delimiters
@@ -286,7 +334,8 @@ class CI_Form_validation {
 	public function run($group = '')
 	{
 		// Do we even have any data to process?  Mm?
-		if (count($_POST) === 0)
+		$validation_array = ( ! empty($this->validation_data)) ? $this->validation_data : $_POST;
+		if (count($validation_array) === 0)
 		{
 			return FALSE;
 		}
@@ -328,18 +377,18 @@ class CI_Form_validation {
 		// corresponding $_POST item and test for errors
 		foreach ($this->_field_data as $field => $row)
 		{
-			// Fetch the data from the corresponding $_POST array and cache it in the _field_data array.
+			// Fetch the data from the corresponding $_POST or validation array and cache it in the _field_data array.
 			// Depending on whether the field name is an array or a string will determine where we get it from.
 
 			if ($row['is_array'] === TRUE)
 			{
-				$this->_field_data[$field]['postdata'] = $this->_reduce_array($_POST, $row['keys']);
+				$this->_field_data[$field]['postdata'] = $this->_reduce_array($validation_array, $row['keys']);
 			}
 			else
 			{
-				if (isset($_POST[$field]) AND $_POST[$field] != "")
+				if (isset($validation_array[$field]) AND $validation_array[$field] != "")
 				{
-					$this->_field_data[$field]['postdata'] = $_POST[$field];
+					$this->_field_data[$field]['postdata'] = $validation_array[$field];
 				}
 			}
 
@@ -853,12 +902,13 @@ class CI_Form_validation {
 	 */
 	public function matches($str, $field)
 	{
-		if ( ! isset($_POST[$field]))
+		$validation_array = ( ! empty($this->validation_data)) ? $this->validation_data : $_POST;
+		if ( ! isset($validation_array[$field]))
 		{
 			return FALSE;
 		}
 
-		return ($str === $_POST[$field]);
+		return ($str === $validation_array[$field]);
 	}
 
 	// --------------------------------------------------------------------
@@ -900,7 +950,7 @@ class CI_Form_validation {
 			return FALSE;
 		}
 
-		if (function_exists('mb_strlen'))
+		if (MB_ENABLED === TRUE)
 		{
 			return ! (mb_strlen($str) < $val);
 		}
@@ -924,7 +974,7 @@ class CI_Form_validation {
 			return FALSE;
 		}
 
-		if (function_exists('mb_strlen'))
+		if (MB_ENABLED === TRUE)
 		{
 			return ! (mb_strlen($str) > $val);
 		}
@@ -948,7 +998,7 @@ class CI_Form_validation {
 			return FALSE;
 		}
 
-		if (function_exists('mb_strlen'))
+		if (MB_ENABLED === TRUE)
 		{
 			return (mb_strlen($str) == $val);
 		}
@@ -1103,7 +1153,7 @@ class CI_Form_validation {
 	// --------------------------------------------------------------------
 
 	/**
-	 * Greather than
+	 * Greater than
 	 *
 	 * @param	string
 	 * @return	bool
@@ -1120,6 +1170,23 @@ class CI_Form_validation {
 	// --------------------------------------------------------------------
 
 	/**
+	 * Equal to or Greater than
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function greater_than_equal_to($str, $min)
+	{
+		if ( ! is_numeric($str))
+		{
+			return FALSE;
+		}
+		return $str >= $min;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
 	 * Less than
 	 *
 	 * @param	string
@@ -1137,6 +1204,23 @@ class CI_Form_validation {
 	// --------------------------------------------------------------------
 
 	/**
+	 * Equal to or Less than
+	 *
+	 * @param	string
+	 * @return	bool
+	 */
+	public function less_than_equal_to($str, $max)
+	{
+		if ( ! is_numeric($str))
+		{
+			return FALSE;
+		}
+		return $str <= $max;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
 	 * Is a Natural number  (0,1,2,3, etc.)
 	 *
 	 * @param	string
@@ -1269,6 +1353,25 @@ class CI_Form_validation {
 		return str_replace(array('<?php', '<?PHP', '<?', '?>'),  array('&lt;?php', '&lt;?PHP', '&lt;?', '?&gt;'), $str);
 	}
 
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reset validation vars
+	 *
+	 * Prevents subsequent validation routines from being affected by the
+	 * results of any previous validation routine due to the CI singleton.
+	 *
+	 * @return	void
+	 */
+	public function reset_validation()
+	{
+		$this->_field_data = array();
+		$this->_config_rules = array();
+		$this->_error_array = array();
+		$this->_error_messages = array();
+		$this->error_string = '';
+	}
+
 }
 
 /* End of file Form_validation.php */
diff --git a/system/libraries/Ftp.php b/system/libraries/Ftp.php
index ab395b0a0..4d96c00cc 100644
--- a/system/libraries/Ftp.php
+++ b/system/libraries/Ftp.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
diff --git a/system/libraries/Image_lib.php b/system/libraries/Image_lib.php
index 9826eabdd..86b77bf07 100644
--- a/system/libraries/Image_lib.php
+++ b/system/libraries/Image_lib.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
diff --git a/system/libraries/Javascript.php b/system/libraries/Javascript.php
index 33df6007a..9ba93000b 100644
--- a/system/libraries/Javascript.php
+++ b/system/libraries/Javascript.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
diff --git a/system/libraries/Log.php b/system/libraries/Log.php
index 944173fdd..955277acc 100644
--- a/system/libraries/Log.php
+++ b/system/libraries/Log.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
diff --git a/system/libraries/Migration.php b/system/libraries/Migration.php
index d07097223..c045ac0e2 100644
--- a/system/libraries/Migration.php
+++ b/system/libraries/Migration.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
diff --git a/system/libraries/Pagination.php b/system/libraries/Pagination.php
index 35ac541e8..86b8d79fa 100644
--- a/system/libraries/Pagination.php
+++ b/system/libraries/Pagination.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
diff --git a/system/libraries/Parser.php b/system/libraries/Parser.php
index 321248277..290e17fc0 100644
--- a/system/libraries/Parser.php
+++ b/system/libraries/Parser.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
diff --git a/system/libraries/Profiler.php b/system/libraries/Profiler.php
index 89c616543..d84e5d3fc 100644
--- a/system/libraries/Profiler.php
+++ b/system/libraries/Profiler.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
@@ -270,7 +270,7 @@ class CI_Profiler {
 				}
 
 				$output .= "<tr><td style='width:50%;color:#000;background-color:#ddd;padding:5px'>&#36;_GET[".$key."]&nbsp;&nbsp; </td><td style='width:50%;padding:5px;color:#cd6e00;font-weight:normal;background-color:#ddd;'>"
-					. (is_array($val) ? "<pre>" . htmlspecialchars(stripslashes(print_r($val, true))) . "</pre>" : htmlspecialchars(stripslashes($val)))
+					. ((is_array($val) OR is_object($val)) ? "<pre>" . htmlspecialchars(stripslashes(print_r($val, true))) . "</pre>" : htmlspecialchars(stripslashes($val)))
 					. "</td></tr>\n";
 			}
 
@@ -311,7 +311,7 @@ class CI_Profiler {
 				}
 
 				$output .= "<tr><td style='width:50%;padding:5px;color:#000;background-color:#ddd;'>&#36;_POST[".$key."]&nbsp;&nbsp; </td><td style='width:50%;padding:5px;color:#009900;font-weight:normal;background-color:#ddd;'>";
-				if (is_array($val))
+				if (is_array($val) OR is_object($val))
 				{
 					$output .= "<pre>" . htmlspecialchars(stripslashes(print_r($val, TRUE))) . "</pre>";
 				}
@@ -426,9 +426,9 @@ class CI_Profiler {
 			. '<legend style="color:#000;">&nbsp;&nbsp;'.$this->CI->lang->line('profiler_config').'&nbsp;&nbsp;(<span style="cursor: pointer;" onclick="var s=document.getElementById(\'ci_profiler_config_table\').style;s.display=s.display==\'none\'?\'\':\'none\';this.innerHTML=this.innerHTML==\''.$this->CI->lang->line('profiler_section_show').'\'?\''.$this->CI->lang->line('profiler_section_hide').'\':\''.$this->CI->lang->line('profiler_section_show').'\';">'.$this->CI->lang->line('profiler_section_show').'</span>)</legend>'
 			. "\n\n\n<table style='width:100%; display:none' id='ci_profiler_config_table'>\n";
 
-		foreach ($this->CI->config->config as $config=>$val)
+		foreach ($this->CI->config->config as $config => $val)
 		{
-			if (is_array($val))
+			if (is_array($val) OR is_object($val))
 			{
 				$val = print_r($val, TRUE);
 			}
@@ -459,7 +459,7 @@ class CI_Profiler {
 
 		foreach ($this->CI->session->all_userdata() as $key => $val)
 		{
-			if (is_array($val) || is_object($val))
+			if (is_array($val) OR is_object($val))
 			{
 				$val = print_r($val, TRUE);
 			}
@@ -501,7 +501,5 @@ class CI_Profiler {
 	}
 }
 
-// END CI_Profiler class
-
 /* End of file Profiler.php */
 /* Location: ./system/libraries/Profiler.php */
diff --git a/system/libraries/Session.php b/system/libraries/Session.php
index 66b39a6a2..0b9d45b2a 100644
--- a/system/libraries/Session.php
+++ b/system/libraries/Session.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
@@ -219,7 +219,7 @@ class CI_Session {
 				$this->CI->db->where('user_agent', $session['user_agent']);
 			}
 
-			$query = $this->CI->db->get($this->sess_table_name);
+			$query = $this->CI->db->limit(1)->get($this->sess_table_name);
 
 			// No result? Kill it!
 			if ($query->num_rows() === 0)
@@ -454,7 +454,7 @@ class CI_Session {
 	 */
 	public function userdata($item)
 	{
-		return ( ! isset($this->userdata[$item])) ? FALSE : $this->userdata[$item];
+		return isset($this->userdata[$item]) ? $this->userdata[$item] : FALSE;
 	}
 
 	// --------------------------------------------------------------------
@@ -729,7 +729,7 @@ class CI_Session {
 	 */
 	protected function _unserialize($data)
 	{
-		$data = @unserialize(strip_slashes($data));
+		$data = @unserialize(strip_slashes(trim($data)));
 
 		if (is_array($data))
 		{
@@ -737,9 +737,11 @@ class CI_Session {
 			return $data;
 		}
 
-		return (is_string($data)) ? str_replace('{{slash}}', '\\', $data) : $data;
+		return is_string($data) ? str_replace('{{slash}}', '\\', $data) : $data;
 	}
 
+	// --------------------------------------------------------------------
+
 	/**
 	 * Unescape slashes
 	 *
@@ -779,7 +781,7 @@ class CI_Session {
 		{
 			$expire = $this->now - $this->sess_expiration;
 
-			$this->CI->db->where("last_activity < {$expire}");
+			$this->CI->db->where('last_activity < '.$expire);
 			$this->CI->db->delete($this->sess_table_name);
 
 			log_message('debug', 'Session garbage collection performed.');
diff --git a/system/libraries/Table.php b/system/libraries/Table.php
index fb154e50f..99d001ce5 100644
--- a/system/libraries/Table.php
+++ b/system/libraries/Table.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
@@ -25,8 +25,6 @@
  * @filesource
  */
 
-// ------------------------------------------------------------------------
-
 /**
  * HTML Table Generating Class
  *
@@ -49,9 +47,21 @@ class CI_Table {
 	public $empty_cells		= '';
 	public $function		= FALSE;
 
-	public function __construct()
+	/**
+	 * Set the template from the table config file if it exists
+	 *
+	 * @param	array	$config	(default: array())
+	 * @return	void
+	 */
+	public function __construct($config = array())
 	{
-		log_message('debug', "Table Class Initialized");
+		log_message('debug', 'Table Class Initialized');
+
+		// initialize config
+		foreach ($config as $key => $val)
+		{
+			$this->template[$key] = $val;
+		}
 	}
 
 	// --------------------------------------------------------------------
diff --git a/system/libraries/Trackback.php b/system/libraries/Trackback.php
index 79a009133..be1de6f3f 100644
--- a/system/libraries/Trackback.php
+++ b/system/libraries/Trackback.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
@@ -141,7 +141,7 @@ class CI_Trackback {
 
 			$this->data['charset'] = ( ! isset($_POST['charset'])) ? 'auto' : strtoupper(trim($_POST['charset']));
 
-			if ($val != 'url' && function_exists('mb_convert_encoding'))
+			if ($val != 'url' && MB_ENABLED === TRUE)
 			{
 				$_POST[$val] = mb_convert_encoding($_POST[$val], $this->charset, $this->data['charset']);
 			}
diff --git a/system/libraries/Typography.php b/system/libraries/Typography.php
index 46c73ef8b..65e30b089 100644
--- a/system/libraries/Typography.php
+++ b/system/libraries/Typography.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
diff --git a/system/libraries/Unit_test.php b/system/libraries/Unit_test.php
index 38d767c69..2eb8df356 100644
--- a/system/libraries/Unit_test.php
+++ b/system/libraries/Unit_test.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
diff --git a/system/libraries/Upload.php b/system/libraries/Upload.php
index ac29c1bdd..42664a587 100644
--- a/system/libraries/Upload.php
+++ b/system/libraries/Upload.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
@@ -1101,7 +1101,7 @@ class CI_Upload {
 				$proc = @popen($cmd, 'r');
 				if (is_resource($proc))
 				{
-					$mime = @fread($test, 512);
+					$mime = @fread($proc, 512);
 					@pclose($proc);
 					if ($mime !== FALSE)
 					{
diff --git a/system/libraries/User_agent.php b/system/libraries/User_agent.php
index cd644c00d..9109edd0f 100644
--- a/system/libraries/User_agent.php
+++ b/system/libraries/User_agent.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
diff --git a/system/libraries/Xmlrpc.php b/system/libraries/Xmlrpc.php
index 730a0fc49..32e2e523b 100644
--- a/system/libraries/Xmlrpc.php
+++ b/system/libraries/Xmlrpc.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
diff --git a/system/libraries/Xmlrpcs.php b/system/libraries/Xmlrpcs.php
index 355d43f29..fc41444bc 100644
--- a/system/libraries/Xmlrpcs.php
+++ b/system/libraries/Xmlrpcs.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *
diff --git a/system/libraries/Zip.php b/system/libraries/Zip.php
index 50e84920e..e33eb4e5a 100644
--- a/system/libraries/Zip.php
+++ b/system/libraries/Zip.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  * 
diff --git a/system/libraries/javascript/Jquery.php b/system/libraries/javascript/Jquery.php
index 03574c66e..f30d7c639 100644
--- a/system/libraries/javascript/Jquery.php
+++ b/system/libraries/javascript/Jquery.php
@@ -2,7 +2,7 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
  *
  * NOTICE OF LICENSE
  *