Update to CodeIgniter 2.1.0

application/config/migration.php

@@ -0,0 +1,41 @@
+<?php defined('BASEPATH') OR exit('No direct script access allowed');
+/*
+|--------------------------------------------------------------------------
+| Enable/Disable Migrations
+|--------------------------------------------------------------------------
+|
+| Migrations are disabled by default but should be enabled 
+| whenever you intend to do a schema migration.
+|
+*/
+$config['migration_enabled'] = FALSE;
+
+
+/*
+|--------------------------------------------------------------------------
+| Migrations version
+|--------------------------------------------------------------------------
+|
+| This is used to set migration version that the file system should be on.
+| If you run $this->migration->latest() this is the version that schema will
+| be upgraded / downgraded to.
+|
+*/
+$config['migration_version'] = 0;
+
+
+/*
+|--------------------------------------------------------------------------
+| Migrations Path
+|--------------------------------------------------------------------------
+|
+| Path to your migrations folder.
+| Typically, it will be within your application path.
+| Also, writing permission is required within the migrations path.
+|
+*/
+$config['migration_path'] = APPPATH . 'migrations/';
+
+
+/* End of file migration.php */
+/* Location: ./application/config/migration.php */

application/config/mimes.php

@@ -1,4 +1,4 @@
-<?php defined('BASEPATH') || exit('No direct script access allowed');
+<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 /*
 | -------------------------------------------------------------------
 | MIME TYPES
@@ -8,100 +8,98 @@
 |
 */
 
-$mimes = array(
+$mimes = array(	'hqx'	=>	'application/mac-binhex40',
-		'hqx' => 'application/mac-binhex40',
+				'cpt'	=>	'application/mac-compactpro',
-		'cpt' => 'application/mac-compactpro',
+				'csv'	=>	array('text/x-comma-separated-values', 'text/comma-separated-values', 'application/octet-stream', 'application/vnd.ms-excel', 'application/x-csv', 'text/x-csv', 'text/csv', 'application/csv', 'application/excel', 'application/vnd.msexcel'),
-		'csv' => array('text/x-comma-separated-values', 'text/comma-separated-values', 'application/octet-stream', 'application/vnd.ms-excel', 'text/x-csv', 'text/csv', 'application/csv', 'application/excel', 'application/vnd.msexcel'),
+				'bin'	=>	'application/macbinary',
-		'bin' => 'application/macbinary',
+				'dms'	=>	'application/octet-stream',
-		'dms' => 'application/octet-stream',
+				'lha'	=>	'application/octet-stream',
-		'lha' => 'application/octet-stream',
+				'lzh'	=>	'application/octet-stream',
-		'lzh' => 'application/octet-stream',
+				'exe'	=>	array('application/octet-stream', 'application/x-msdownload'),
-		'exe' => array('application/octet-stream', 'application/x-msdownload'),
+				'class'	=>	'application/octet-stream',
-		'class' => 'application/octet-stream',
+				'psd'	=>	'application/x-photoshop',
-		'psd' => 'application/x-photoshop',
+				'so'	=>	'application/octet-stream',
-		'so' => 'application/octet-stream',
+				'sea'	=>	'application/octet-stream',
-		'sea' => 'application/octet-stream',
+				'dll'	=>	'application/octet-stream',
-		'dll' => 'application/octet-stream',
+				'oda'	=>	'application/oda',
-		'oda' => 'application/oda',
+				'pdf'	=>	array('application/pdf', 'application/x-download'),
-		'pdf' => array('application/pdf', 'application/x-download'),
+				'ai'	=>	'application/postscript',
-		'ai' => 'application/postscript',
+				'eps'	=>	'application/postscript',
-		'eps' => 'application/postscript',
+				'ps'	=>	'application/postscript',
-		'ps' => 'application/postscript',
+				'smi'	=>	'application/smil',
-		'smi' => 'application/smil',
+				'smil'	=>	'application/smil',
-		'smil' => 'application/smil',
+				'mif'	=>	'application/vnd.mif',
-		'mif' => 'application/vnd.mif',
+				'xls'	=>	array('application/excel', 'application/vnd.ms-excel', 'application/msexcel'),
-		'xls' => array('application/excel', 'application/vnd.ms-excel', 'application/msexcel'),
+				'ppt'	=>	array('application/powerpoint', 'application/vnd.ms-powerpoint'),
-		'ppt' => array('application/powerpoint', 'application/vnd.ms-powerpoint'),
+				'wbxml'	=>	'application/wbxml',
-		'wbxml' => 'application/wbxml',
+				'wmlc'	=>	'application/wmlc',
-		'wmlc' => 'application/wmlc',
+				'dcr'	=>	'application/x-director',
-		'dcr' => 'application/x-director',
+				'dir'	=>	'application/x-director',
-		'dir' => 'application/x-director',
+				'dxr'	=>	'application/x-director',
-		'dxr' => 'application/x-director',
+				'dvi'	=>	'application/x-dvi',
-		'dvi' => 'application/x-dvi',
+				'gtar'	=>	'application/x-gtar',
-		'gtar' => 'application/x-gtar',
+				'gz'	=>	'application/x-gzip',
-		'gz' => 'application/x-gzip',
+				'php'	=>	'application/x-httpd-php',
-		'php' => 'application/x-httpd-php',
+				'php4'	=>	'application/x-httpd-php',
-		'php4' => 'application/x-httpd-php',
+				'php3'	=>	'application/x-httpd-php',
-		'php3' => 'application/x-httpd-php',
+				'phtml'	=>	'application/x-httpd-php',
-		'phtml' => 'application/x-httpd-php',
+				'phps'	=>	'application/x-httpd-php-source',
-		'phps' => 'application/x-httpd-php-source',
+				'js'	=>	'application/x-javascript',
-		'js' => 'application/x-javascript',
+				'swf'	=>	'application/x-shockwave-flash',
-		'swf' => 'application/x-shockwave-flash',
+				'sit'	=>	'application/x-stuffit',
-		'sit' => 'application/x-stuffit',
+				'tar'	=>	'application/x-tar',
-		'tar' => 'application/x-tar',
+				'tgz'	=>	array('application/x-tar', 'application/x-gzip-compressed'),
-		'tgz' => array('application/x-tar', 'application/x-gzip-compressed'),
+				'xhtml'	=>	'application/xhtml+xml',
-		'xhtml' => 'application/xhtml+xml',
+				'xht'	=>	'application/xhtml+xml',
-		'xht' => 'application/xhtml+xml',
+				'zip'	=>  array('application/x-zip', 'application/zip', 'application/x-zip-compressed'),
-		'zip' => array('application/x-zip', 'application/zip', 'application/x-zip-compressed'),
+				'mid'	=>	'audio/midi',
-		'mid' => 'audio/midi',
+				'midi'	=>	'audio/midi',
-		'midi' => 'audio/midi',
+				'mpga'	=>	'audio/mpeg',
-		'mpga' => 'audio/mpeg',
+				'mp2'	=>	'audio/mpeg',
-		'mp2' => 'audio/mpeg',
+				'mp3'	=>	array('audio/mpeg', 'audio/mpg', 'audio/mpeg3', 'audio/mp3'),
-		'mp3' => array('audio/mpeg', 'audio/mpg', 'audio/mpeg3', 'audio/mp3'),
+				'aif'	=>	'audio/x-aiff',
-		'aif' => 'audio/x-aiff',
+				'aiff'	=>	'audio/x-aiff',
-		'aiff' => 'audio/x-aiff',
+				'aifc'	=>	'audio/x-aiff',
-		'aifc' => 'audio/x-aiff',
+				'ram'	=>	'audio/x-pn-realaudio',
-		'ram' => 'audio/x-pn-realaudio',
+				'rm'	=>	'audio/x-pn-realaudio',
-		'rm' => 'audio/x-pn-realaudio',
+				'rpm'	=>	'audio/x-pn-realaudio-plugin',
-		'rpm' => 'audio/x-pn-realaudio-plugin',
+				'ra'	=>	'audio/x-realaudio',
-		'ra' => 'audio/x-realaudio',
+				'rv'	=>	'video/vnd.rn-realvideo',
-		'rv' => 'video/vnd.rn-realvideo',
+				'wav'	=>	array('audio/x-wav', 'audio/wave', 'audio/wav'),
-		'wav' => 'audio/x-wav',
+				'bmp'	=>	array('image/bmp', 'image/x-windows-bmp'),
-		'bmp' => 'image/bmp',
+				'gif'	=>	'image/gif',
-		'gif' => 'image/gif',
+				'jpeg'	=>	array('image/jpeg', 'image/pjpeg'),
-		'jpeg' => array('image/jpeg', 'image/pjpeg'),
+				'jpg'	=>	array('image/jpeg', 'image/pjpeg'),
-		'jpg' => array('image/jpeg', 'image/pjpeg'),
+				'jpe'	=>	array('image/jpeg', 'image/pjpeg'),
-		'jpe' => array('image/jpeg', 'image/pjpeg'),
+				'png'	=>	array('image/png',  'image/x-png'),
-		'png' => array('image/png', 'image/x-png'),
+				'tiff'	=>	'image/tiff',
-		'tiff' => 'image/tiff',
+				'tif'	=>	'image/tiff',
-		'tif' => 'image/tiff',
+				'css'	=>	'text/css',
-		'css' => 'text/css',
+				'html'	=>	'text/html',
-		'html' => 'text/html',
+				'htm'	=>	'text/html',
-		'htm' => 'text/html',
+				'shtml'	=>	'text/html',
-		'shtml' => 'text/html',
+				'txt'	=>	'text/plain',
-		'txt' => 'text/plain',
+				'text'	=>	'text/plain',
-		'text' => 'text/plain',
+				'log'	=>	array('text/plain', 'text/x-log'),
-		'log' => array('text/plain', 'text/x-log'),
+				'rtx'	=>	'text/richtext',
-		'rtx' => 'text/richtext',
+				'rtf'	=>	'text/rtf',
-		'rtf' => 'text/rtf',
+				'xml'	=>	'text/xml',
-		'xml' => 'text/xml',
+				'xsl'	=>	'text/xml',
-		'xsl' => 'text/xml',
+				'mpeg'	=>	'video/mpeg',
-		'mpeg' => 'video/mpeg',
+				'mpg'	=>	'video/mpeg',
-		'mpg' => 'video/mpeg',
+				'mpe'	=>	'video/mpeg',
-		'mpe' => 'video/mpeg',
+				'qt'	=>	'video/quicktime',
-		'qt' => 'video/quicktime',
+				'mov'	=>	'video/quicktime',
-		'mov' => 'video/quicktime',
+				'avi'	=>	'video/x-msvideo',
-		'avi' => 'video/x-msvideo',
+				'movie'	=>	'video/x-sgi-movie',
-		'movie' => 'video/x-sgi-movie',
+				'doc'	=>	'application/msword',
-		'doc' => 'application/msword',
+				'docx'	=>	'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
-		'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
+				'xlsx'	=>	'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
-		'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+				'word'	=>	array('application/msword', 'application/octet-stream'),
-		'word' => array('application/msword', 'application/octet-stream'),
+				'xl'	=>	'application/excel',
-		'xl' => 'application/excel',
+				'eml'	=>	'message/rfc822',
-		'eml' => 'message/rfc822',
+				'json' => array('application/json', 'text/json')
-		'json' => array('application/json', 'text/json'),
+			);
-		'obj' => 'text/plain',
-);
 
 
 /* End of file mimes.php */

system/core/Benchmark.php

@@ -29,6 +29,11 @@
  */
 class CI_Benchmark {
 
+	/**
+	 * List of all benchmark markers and when they were added
+	 *
+	 * @var array
+	 */
 	var $marker = array();
 
 	// --------------------------------------------------------------------

system/core/CodeIgniter.php

@@ -27,17 +27,19 @@
  * @link		http://codeigniter.com/user_guide/
  */
 
-/*
+/**
- * ------------------------------------------------------
+ * CodeIgniter Version
- *  Define the CodeIgniter Version
+ *
- * ------------------------------------------------------
+ * @var string
+ *
  */
-	define('CI_VERSION', '2.0.3');
+	define('CI_VERSION', '2.1.0');
 
-/*
+/**
- * ------------------------------------------------------
+ * CodeIgniter Branch (Core = TRUE, Reactor = FALSE)
- *  Define the CodeIgniter Branch (Core = TRUE, Reactor = FALSE)
+ *
- * ------------------------------------------------------
+ * @var boolean
+ *
  */
 	define('CI_CORE', FALSE);
 
@@ -267,7 +269,25 @@
 		OR in_array(strtolower($method), array_map('strtolower', get_class_methods('CI_Controller')))
 		)
 	{
-		show_404("{$class}/{$method}");
+		if ( ! empty($RTR->routes['404_override']))
+		{
+			$x = explode('/', $RTR->routes['404_override']);
+			$class = $x[0];
+			$method = (isset($x[1]) ? $x[1] : 'index');
+			if ( ! class_exists($class))
+			{
+				if ( ! file_exists(APPPATH.'controllers/'.$class.'.php'))
+				{
+					show_404("{$class}/{$method}");
+				}
+
+				include_once(APPPATH.'controllers/'.$class.'.php');
+			}
+		}
+		else
+		{
+			show_404("{$class}/{$method}");
+		}
 	}
 
 /*

system/core/Common.php

@@ -132,9 +132,9 @@ if ( ! function_exists('load_class'))
 
 		$name = FALSE;
 
-		// Look for the class first in the native system/libraries folder
+		// Look for the class first in the local application/libraries folder
-		// thenin the local application/libraries folder
+		// then in the native system/libraries folder
-		foreach (array(BASEPATH, APPPATH) as $path)
+		foreach (array(APPPATH, BASEPATH) as $path)
 		{
 			if (file_exists($path.$directory.'/'.$class.'.php'))
 			{
@@ -536,5 +536,29 @@ if ( ! function_exists('remove_invisible_characters'))
 	}
 }
 
+// ------------------------------------------------------------------------
+
+/**
+* Returns HTML escaped variable
+*
+* @access	public
+* @param	mixed
+* @return	mixed
+*/
+if ( ! function_exists('html_escape'))
+{
+	function html_escape($var)
+	{
+		if (is_array($var))
+		{
+			return array_map('html_escape', $var);
+		}
+		else
+		{
+			return htmlspecialchars($var, ENT_QUOTES, config_item('charset'));
+		}
+	}
+}
+
 /* End of file Common.php */
 /* Location: ./system/core/Common.php */

system/core/Config.php

@@ -28,8 +28,23 @@
  */
 class CI_Config {
 
+	/**
+	 * List of all loaded config values
+	 *
+	 * @var array
+	 */
 	var $config = array();
+	/**
+	 * List of all loaded config files
+	 *
+	 * @var array
+	 */
 	var $is_loaded = array();
+	/**
+	 * List of paths to search when trying to load a config file
+	 *
+	 * @var array
+	 */
 	var $_config_paths = array(APPPATH);
 
 	/**

system/core/Controller.php

@@ -48,7 +48,7 @@ class CI_Controller {
 
 		$this->load =& load_class('Loader', 'core');
 
-		$this->load->set_base_classes()->ci_autoloader();
+		$this->load->initialize();
 		
 		log_message('debug', "Controller Class Initialized");
 	}

system/core/Exceptions.php

@@ -30,8 +30,21 @@ class CI_Exceptions {
 	var $message;
 	var $filename;
 	var $line;
+
+	/**
+	 * Nesting level of the output buffering mechanism
+	 *
+	 * @var int
+	 * @access public
+	 */
 	var $ob_level;
 
+	/**
+	 * List if available error levels
+	 *
+	 * @var array
+	 * @access public
+	 */
 	var $levels = array(
 						E_ERROR				=>	'Error',
 						E_WARNING			=>	'Warning',
@@ -84,7 +97,8 @@ class CI_Exceptions {
 	 * 404 Page Not Found Handler
 	 *
 	 * @access	private
-	 * @param	string
+	 * @param	string	the page
+	 * @param 	bool	log error yes/no
 	 * @return	string
 	 */
 	function show_404($page = '', $log_error = TRUE)
@@ -115,6 +129,7 @@ class CI_Exceptions {
 	 * @param	string	the heading
 	 * @param	string	the message
 	 * @param	string	the template name
+	 * @param 	int		the status code
 	 * @return	string
 	 */
 	function show_error($heading, $message, $template = 'error_general', $status_code = 500)

system/core/Hooks.php

@@ -28,8 +28,23 @@
  */
 class CI_Hooks {
 
+	/**
+	 * Determines wether hooks are enabled
+	 *
+	 * @var bool
+	 */
 	var $enabled		= FALSE;
+	/**
+	 * List of all hooks set in config/hooks.php
+	 *
+	 * @var array
+	 */
 	var $hooks			= array();
+	/**
+	 * Determines wether hook is in progress, used to prevent infinte loops
+	 *
+	 * @var bool
+	 */
 	var $in_progress	= FALSE;
 
 	/**

system/core/Input.php

@@ -28,13 +28,49 @@
  */
 class CI_Input {
 
+	/**
+	 * IP address of the current user
+	 *
+	 * @var string
+	 */
 	var $ip_address				= FALSE;
+	/**
+	 * user agent (web browser) being used by the current user
+	 *
+	 * @var string
+	 */
 	var $user_agent				= FALSE;
+	/**
+	 * If FALSE, then $_GET will be set to an empty array
+	 *
+	 * @var bool
+	 */
 	var $_allow_get_array		= TRUE;
+	/**
+	 * If TRUE, then newlines are standardized
+	 *
+	 * @var bool
+	 */
 	var $_standardize_newlines	= TRUE;
-	var $_enable_xss			= FALSE; // Set automatically based on config setting
+	/**
-	var $_enable_csrf			= FALSE; // Set automatically based on config setting
+	 * Determines whether the XSS filter is always active when GET, POST or COOKIE data is encountered
-
+	 * Set automatically based on config setting
+	 *
+	 * @var bool
+	 */
+	var $_enable_xss			= FALSE;
+	/**
+	 * Enables a CSRF cookie token to be set.
+	 * Set automatically based on config setting
+	 *
+	 * @var bool
+	 */
+	var $_enable_csrf			= FALSE;
+	/**
+	 * List of all HTTP request headers
+	 *
+	 * @var array
+	 */
 	protected $headers			= array();
 
 
@@ -512,8 +548,12 @@ class CI_Input {
 			return $new_array;
 		}
 
-		// We strip slashes if magic quotes is on to keep things consistent
+		/* We strip slashes if magic quotes is on to keep things consistent
-		if (function_exists('get_magic_quotes_gpc') AND get_magic_quotes_gpc())
+
+		   NOTE: In PHP 5.4 get_magic_quotes_gpc() will always return 0 and
+			 it will probably not exist in future versions at all.
+		*/
+		if ( ! is_php('5.4') && get_magic_quotes_gpc())
 		{
 			$str = stripslashes($str);
 		}
@@ -582,6 +622,8 @@ class CI_Input {
 	 * In Apache, you can simply call apache_request_headers(), however for
 	 * people running other webservers the function is undefined.
 	 *
+	 * @param	bool XSS cleaning
+	 *
 	 * @return array
 	 */
 	public function request_headers($xss_clean = FALSE)
@@ -676,7 +718,6 @@ class CI_Input {
 	}
 
 }
-// END Input class
 
 /* End of file Input.php */
 /* Location: ./system/core/Input.php */

system/core/Lang.php

@@ -26,7 +26,17 @@
  */
 class CI_Lang {
 
+	/**
+	 * List of translations
+	 *
+	 * @var array
+	 */
 	var $language	= array();
+	/**
+	 * List of loaded language files
+	 *
+	 * @var array
+	 */
 	var $is_loaded	= array();
 
 	/**
@@ -47,6 +57,9 @@ class CI_Lang {
 	 * @access	public
 	 * @param	mixed	the name of the language file to be loaded. Can be an array
 	 * @param	string	the language (english, etc.)
+	 * @param	bool	return loaded array of translations
+	 * @param 	bool	add suffix to $langfile
+	 * @param 	string	alternative path to look for language file
 	 * @return	mixed
 	 */
 	function load($langfile = '', $idiom = '', $return = FALSE, $add_suffix = TRUE, $alt_path = '')

system/core/Loader.php

@@ -29,17 +29,90 @@
 class CI_Loader {
 
 	// All these are set automatically. Don't mess with them.
+	/**
+	 * Nesting level of the output buffering mechanism
+	 *
+	 * @var int
+	 * @access protected
+	 */
 	protected $_ci_ob_level;
+	/**
+	 * List of paths to load views from
+	 *
+	 * @var array
+	 * @access protected
+	 */
 	protected $_ci_view_paths		= array();
+	/**
+	 * List of paths to load libraries from
+	 *
+	 * @var array
+	 * @access protected
+	 */
 	protected $_ci_library_paths	= array();
+	/**
+	 * List of paths to load models from
+	 *
+	 * @var array
+	 * @access protected
+	 */
 	protected $_ci_model_paths		= array();
+	/**
+	 * List of paths to load helpers from
+	 *
+	 * @var array
+	 * @access protected
+	 */
 	protected $_ci_helper_paths		= array();
+	/**
+	 * List of loaded base classes
+	 * Set by the controller class
+	 *
+	 * @var array
+	 * @access protected
+	 */
 	protected $_base_classes		= array(); // Set by the controller class
+	/**
+	 * List of cached variables
+	 *
+	 * @var array
+	 * @access protected
+	 */
 	protected $_ci_cached_vars		= array();
+	/**
+	 * List of loaded classes
+	 *
+	 * @var array
+	 * @access protected
+	 */
 	protected $_ci_classes			= array();
+	/**
+	 * List of loaded files
+	 *
+	 * @var array
+	 * @access protected
+	 */
 	protected $_ci_loaded_files		= array();
+	/**
+	 * List of loaded models
+	 *
+	 * @var array
+	 * @access protected
+	 */
 	protected $_ci_models			= array();
+	/**
+	 * List of loaded helpers
+	 *
+	 * @var array
+	 * @access protected
+	 */
 	protected $_ci_helpers			= array();
+	/**
+	 * List of class name mappings
+	 *
+	 * @var array
+	 * @access protected
+	 */
 	protected $_ci_varmap			= array('unit_test' => 'unit',
 											'user_agent' => 'agent');
 
@@ -62,17 +135,22 @@ class CI_Loader {
 	// --------------------------------------------------------------------
 
 	/**
-	 * Set _base_classes variable
+	 * Initialize the Loader
 	 *
 	 * This method is called once in CI_Controller.
 	 *
 	 * @param 	array
 	 * @return 	object
 	 */
-	public function set_base_classes()
+	public function initialize()
 	{
+		$this->_ci_classes = array();
+		$this->_ci_loaded_files = array();
+		$this->_ci_models = array();
 		$this->_base_classes =& is_loaded();
 
+		$this->_ci_autoloader();
+
 		return $this;
 	}
 
@@ -366,6 +444,7 @@ class CI_Loader {
 	 * the controller class and its "view" files.
 	 *
 	 * @param	array
+	 * @param 	string
 	 * @return	void
 	 */
 	public function vars($vars = array(), $val = '')
@@ -507,6 +586,8 @@ class CI_Loader {
 	 * Loads a config file
 	 *
 	 * @param	string
+	 * @param	bool
+	 * @param 	bool
 	 * @return	void
 	 */
 	public function config($file = '', $use_sections = FALSE, $fail_gracefully = FALSE)
@@ -535,6 +616,11 @@ class CI_Loader {
 			require BASEPATH.'libraries/Driver.php';
 		}
 
+		if ($library == '')
+		{
+			return FALSE;
+		}
+
 		// We can save the loader some time since Drivers will *always* be in a subfolder,
 		// and typically identically named to the library
 		if ( ! strpos($library, '/'))
@@ -595,6 +681,7 @@ class CI_Loader {
 	 * If no path is provided, the most recently added path is removed.
 	 *
 	 * @param	type
+	 * @param 	bool
 	 * @return	type
 	 */
 	public function remove_package_path($path = '', $remove_config_path = TRUE)
@@ -913,6 +1000,7 @@ class CI_Loader {
 	 *
 	 * @param	string
 	 * @param	string
+	 * @param	bool
 	 * @param	string	an optional object name
 	 * @return	null
 	 */
@@ -935,22 +1023,22 @@ class CI_Loader {
 					// first, global next
 					if (defined('ENVIRONMENT') AND file_exists($path .'config/'.ENVIRONMENT.'/'.strtolower($class).'.php'))
 					{
-						include_once($path .'config/'.ENVIRONMENT.'/'.strtolower($class).'.php');
+						include($path .'config/'.ENVIRONMENT.'/'.strtolower($class).'.php');
 						break;
 					}
 					elseif (defined('ENVIRONMENT') AND file_exists($path .'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).'.php'))
 					{
-						include_once($path .'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).'.php');
+						include($path .'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).'.php');
 						break;
 					}
 					elseif (file_exists($path .'config/'.strtolower($class).'.php'))
 					{
-						include_once($path .'config/'.strtolower($class).'.php');
+						include($path .'config/'.strtolower($class).'.php');
 						break;
 					}
 					elseif (file_exists($path .'config/'.ucfirst(strtolower($class)).'.php'))
 					{
-						include_once($path .'config/'.ucfirst(strtolower($class)).'.php');
+						include($path .'config/'.ucfirst(strtolower($class)).'.php');
 						break;
 					}
 				}
@@ -1020,24 +1108,20 @@ class CI_Loader {
 	 * The config/autoload.php file contains an array that permits sub-systems,
 	 * libraries, and helpers to be loaded automatically.
 	 *
-	 * This function is public, as it's used in the CI_Controller class.  
-	 * However, there is no reason you should ever needs to use it.
-	 *
 	 * @param	array
 	 * @return	void
 	 */
-	public function ci_autoloader()
+	private function _ci_autoloader()
 	{
 		if (defined('ENVIRONMENT') AND file_exists(APPPATH.'config/'.ENVIRONMENT.'/autoload.php'))
 		{
-			include_once(APPPATH.'config/'.ENVIRONMENT.'/autoload.php');
+			include(APPPATH.'config/'.ENVIRONMENT.'/autoload.php');
 		}
 		else
 		{
-			include_once(APPPATH.'config/autoload.php');
+			include(APPPATH.'config/autoload.php');
 		}
 
-
 		if ( ! isset($autoload))
 		{
 			return FALSE;
@@ -1122,6 +1206,7 @@ class CI_Loader {
 	/**
 	 * Get a reference to a specific library or model
 	 *
+	 * @param 	string
 	 * @return	bool
 	 */
 	protected function &_ci_get_component($component)
@@ -1138,6 +1223,7 @@ class CI_Loader {
 	 * This function preps the name of various items to make loading them more reliable.
 	 *
 	 * @param	mixed
+	 * @param 	string
 	 * @return	array
 	 */
 	protected function _ci_prep_filename($filename, $extension)

system/core/Model.php

@@ -42,6 +42,7 @@ class CI_Model {
 	 * Allows models to access CI's loaded classes using the same
 	 * syntax as controllers.
 	 *
+	 * @param	string
 	 * @access private
 	 */
 	function __get($key)

system/core/Output.php

@@ -28,15 +28,67 @@
  */
 class CI_Output {
 
+	/**
+	 * Current output string
+	 *
+	 * @var string
+	 * @access 	protected
+	 */
 	protected $final_output;
+	/**
+	 * Cache expiration time
+	 *
+	 * @var int
+	 * @access 	protected
+	 */
 	protected $cache_expiration	= 0;
+	/**
+	 * List of server headers
+	 *
+	 * @var array
+	 * @access 	protected
+	 */
 	protected $headers			= array();
-	protected $mime_types			= array();
+	/**
+	 * List of mime types
+	 *
+	 * @var array
+	 * @access 	protected
+	 */
+	protected $mime_types		= array();
+	/**
+	 * Determines wether profiler is enabled
+	 *
+	 * @var book
+	 * @access 	protected
+	 */
 	protected $enable_profiler	= FALSE;
+	/**
+	 * Determines if output compression is enabled
+	 *
+	 * @var bool
+	 * @access 	protected
+	 */
 	protected $_zlib_oc			= FALSE;
+	/**
+	 * List of profiler sections
+	 *
+	 * @var array
+	 * @access 	protected
+	 */
 	protected $_profiler_sections = array();
-	protected $parse_exec_vars	= TRUE;	// whether or not to parse variables like {elapsed_time} and {memory_usage}
+	/**
+	 * Whether or not to parse variables like {elapsed_time} and {memory_usage}
+	 *
+	 * @var bool
+	 * @access 	protected
+	 */
+	protected $parse_exec_vars	= TRUE;
 
+	/**
+	 * Constructor
+	 *
+	 */
 	function __construct()
 	{
 		$this->_zlib_oc = @ini_get('zlib.output_compression');
@@ -127,6 +179,7 @@ class CI_Output {
 	 *
 	 * @access	public
 	 * @param	string
+	 * @param 	bool
 	 * @return	void
 	 */
 	function set_header($header, $replace = TRUE)
@@ -265,6 +318,7 @@ class CI_Output {
 	 * benchmark timer so the page rendering speed and memory usage can be shown.
 	 *
 	 * @access	public
+	 * @param 	string
 	 * @return	mixed
 	 */
 	function _display($output = '')
@@ -401,6 +455,7 @@ class CI_Output {
 	 * Write a Cache File
 	 *
 	 * @access	public
+	 * @param 	string
 	 * @return	void
 	 */
 	function _write_cache($output)
@@ -452,6 +507,8 @@ class CI_Output {
 	 * Update/serve a cached file
 	 *
 	 * @access	public
+	 * @param 	object	config class
+	 * @param 	object	uri class
 	 * @return	void
 	 */
 	function _display_cache(&$CFG, &$URI)

system/core/Router.php

@@ -28,12 +28,54 @@
  */
 class CI_Router {
 
+	/**
+	 * Config class
+	 *
+	 * @var object
+	 * @access public
+	 */
 	var $config;
+	/**
+	 * List of routes
+	 *
+	 * @var array
+	 * @access public
+	 */
 	var $routes			= array();
+	/**
+	 * List of error routes
+	 *
+	 * @var array
+	 * @access public
+	 */
 	var $error_routes	= array();
+	/**
+	 * Current class name
+	 *
+	 * @var string
+	 * @access public
+	 */
 	var $class			= '';
+	/**
+	 * Current method name
+	 *
+	 * @var string
+	 * @access public
+	 */
 	var $method			= 'index';
+	/**
+	 * Sub-directory that contains the requested controller class
+	 *
+	 * @var string
+	 * @access public
+	 */
 	var $directory		= '';
+	/**
+	 * Default controller (and method if specific)
+	 *
+	 * @var string
+	 * @access public
+	 */
 	var $default_controller;
 
 	/**
@@ -244,7 +286,20 @@ class CI_Router {
 				// Does the requested controller exist in the sub-folder?
 				if ( ! file_exists(APPPATH.'controllers/'.$this->fetch_directory().$segments[0].'.php'))
 				{
-					show_404($this->fetch_directory().$segments[0]);
+					if ( ! empty($this->routes['404_override']))
+					{
+						$x = explode('/', $this->routes['404_override']);
+
+						$this->set_directory('');
+						$this->set_class($x[0]);
+						$this->set_method(isset($x[1]) ? $x[1] : 'index');
+
+						return $x;
+					}
+					else
+					{
+						show_404($this->fetch_directory().$segments[0]);
+					}
 				}
 			}
 			else

system/core/Security.php

@@ -26,13 +26,48 @@
  */
 class CI_Security {
 
+	/**
+	 * Random Hash for protecting URLs
+	 *
+	 * @var string
+	 * @access protected
+	 */
 	protected $_xss_hash			= '';
+	/**
+	 * Random Hash for Cross Site Request Forgery Protection Cookie
+	 *
+	 * @var string
+	 * @access protected
+	 */
 	protected $_csrf_hash			= '';
-	protected $_csrf_expire			= 7200;  // Two hours (in seconds)
+	/**
+	 * Expiration time for Cross Site Request Forgery Protection Cookie
+	 * Defaults to two hours (in seconds)
+	 *
+	 * @var int
+	 * @access protected
+	 */
+	protected $_csrf_expire			= 7200;
+	/**
+	 * Token name for Cross Site Request Forgery Protection Cookie
+	 *
+	 * @var string
+	 * @access protected
+	 */
 	protected $_csrf_token_name		= 'ci_csrf_token';
+	/**
+	 * Cookie name for Cross Site Request Forgery Protection Cookie
+	 *
+	 * @var string
+	 * @access protected
+	 */
 	protected $_csrf_cookie_name	= 'ci_csrf_token';
-
+	/**
-	/* never allowed, string replacement */
+	 * List of never allowed strings
+	 *
+	 * @var array
+	 * @access protected
+	 */
 	protected $_never_allowed_str = array(
 					'document.cookie'	=> '[removed]',
 					'document.write'	=> '[removed]',
@@ -42,10 +77,17 @@ class CI_Security {
 					'-moz-binding'		=> '[removed]',
 					'<!--'				=> '&lt;!--',
 					'-->'				=> '--&gt;',
-					'<![CDATA['			=> '&lt;![CDATA['
+					'<![CDATA['			=> '&lt;![CDATA[',
+					'<comment>'			=> '&lt;comment&gt;'
 	);
 
 	/* never allowed, regex replacement */
+	/**
+	 * List of never allowed regex replacement
+	 *
+	 * @var array
+	 * @access protected
+	 */
 	protected $_never_allowed_regex = array(
 					"javascript\s*:"			=> '[removed]',
 					"expression\s*(\(|&\#40;)"	=> '[removed]', // CSS and IE
@@ -215,6 +257,7 @@ class CI_Security {
 	 * http://ha.ckers.org/xss.html
 	 *
 	 * @param	mixed	string or array
+	 * @param 	bool
 	 * @return	string
 	 */
 	public function xss_clean($str, $is_image = FALSE)
@@ -433,15 +476,7 @@ class CI_Security {
 	{
 		if ($this->_xss_hash == '')
 		{
-			if (phpversion() >= 4.2)
+			mt_srand();
-			{
-				mt_srand();
-			}
-			else
-			{
-				mt_srand(hexdec(substr(md5(microtime()), -8)) & 0x7fffffff);
-			}
-
 			$this->_xss_hash = md5(time() + mt_rand(0, 1999999999));
 		}
 
@@ -455,14 +490,11 @@ class CI_Security {
 	 *
 	 * This function is a replacement for html_entity_decode()
 	 *
-	 * In some versions of PHP the native function does not work
+	 * The reason we are not using html_entity_decode() by itself is because
-	 * when UTF-8 is the specified character set, so this gives us
+	 * while it is not technically correct to leave out the semicolon
-	 * a work-around.  More info here:
+	 * at the end of an entity most browsers will still interpret the entity
-	 * http://bugs.php.net/bug.php?id=25670
+	 * correctly.  html_entity_decode() does not convert entities without
-	 *
+	 * semicolons, so we are left with our own little solution here. Bummer.
-	 * NOTE: html_entity_decode() has a bug in some PHP versions when UTF-8 is the
-	 * character set, and the PHP developers said they were not back porting the
-	 * fix to versions other than PHP 5.x.
 	 *
 	 * @param	string
 	 * @param	string
@@ -470,33 +502,14 @@ class CI_Security {
 	 */
 	public function entity_decode($str, $charset='UTF-8')
 	{
-		if (stristr($str, '&') === FALSE) return $str;
-
-		// The reason we are not using html_entity_decode() by itself is because
-		// while it is not technically correct to leave out the semicolon
-		// at the end of an entity most browsers will still interpret the entity
-		// correctly.  html_entity_decode() does not convert entities without
-		// semicolons, so we are left with our own little solution here. Bummer.
-
-		if (function_exists('html_entity_decode') && 
-			(strtolower($charset) != 'utf-8'))
-		{
-			$str = html_entity_decode($str, ENT_COMPAT, $charset);
-			$str = preg_replace('~&#x(0*[0-9a-f]{2,5})~ei', 'chr(hexdec("\\1"))', $str);
-			return preg_replace('~&#([0-9]{2,4})~e', 'chr(\\1)', $str);
-		}
-
-		// Numeric Entities
-		$str = preg_replace('~&#x(0*[0-9a-f]{2,5});{0,1}~ei', 'chr(hexdec("\\1"))', $str);
-		$str = preg_replace('~&#([0-9]{2,4});{0,1}~e', 'chr(\\1)', $str);
-
-		// Literal Entities - Slightly slow so we do another check
 		if (stristr($str, '&') === FALSE)
 		{
-			$str = strtr($str, array_flip(get_html_translation_table(HTML_ENTITIES)));
+			return $str;
 		}
 
-		return $str;
+		$str = html_entity_decode($str, ENT_COMPAT, $charset);
+		$str = preg_replace('~&#x(0*[0-9a-f]{2,5})~ei', 'chr(hexdec("\\1"))', $str);
+		return preg_replace('~&#([0-9]{2,4})~e', 'chr(\\1)', $str);
 	}
 
 	// --------------------------------------------------------------------
@@ -505,6 +518,7 @@ class CI_Security {
 	 * Filename Security
 	 *
 	 * @param	string
+	 * @param 	bool
 	 * @return	string
 	 */
 	public function sanitize_filename($str, $relative_path = FALSE)
@@ -589,7 +603,7 @@ class CI_Security {
 	protected function _remove_evil_attributes($str, $is_image)
 	{
 		// All javascript event handlers (e.g. onload, onclick, onmouseover), style, and xmlns
-		$evil_attributes = array('on\w*', 'style', 'xmlns');
+		$evil_attributes = array('on\w*', 'style', 'xmlns', 'formaction');
 
 		if ($is_image === TRUE)
 		{
@@ -601,11 +615,31 @@ class CI_Security {
 		}
 		
 		do {
-			$str = preg_replace(
+			$count = 0;
-				"#<(/?[^><]+?)([^A-Za-z\-])(".implode('|', $evil_attributes).")(\s*=\s*)([\"][^>]*?[\"]|[\'][^>]*?[\']|[^>]*?)([\s><])([><]*)#i",
+			$attribs = array();
-				"<$1$6",
+			
-				$str, -1, $count
+			// find occurrences of illegal attribute strings without quotes
-			);
+			preg_match_all("/(".implode('|', $evil_attributes).")\s*=\s*([^\s]*)/is",  $str, $matches, PREG_SET_ORDER);
+			
+			foreach ($matches as $attr)
+			{
+				$attribs[] = preg_quote($attr[0], '/');
+			}
+			
+			// find occurrences of illegal attribute strings with quotes (042 and 047 are octal quotes)
+			preg_match_all("/(".implode('|', $evil_attributes).")\s*=\s*(\042|\047)([^\\2]*?)(\\2)/is",  $str, $matches, PREG_SET_ORDER);
+
+			foreach ($matches as $attr)
+			{
+				$attribs[] = preg_quote($attr[0], '/');
+			}
+
+			// replace illegal attribute strings that are inside an html tag
+			if (count($attribs) > 0)
+			{
+				$str = preg_replace("/<(\/?[^><]+?)([^A-Za-z\-])(".implode('|', $attribs).")([\s><])([><]*)/i", '<$1$2$4$5', $str, -1, $count);
+			}
+			
 		} while ($count);
 		
 		return $str;

system/core/URI.php

@@ -28,9 +28,34 @@
  */
 class CI_URI {
 
+	/**
+	 * List of cached uri segments
+	 *
+	 * @var array
+	 * @access public
+	 */
 	var	$keyval			= array();
+	/**
+	 * Current uri string
+	 *
+	 * @var string
+	 * @access public
+	 */
 	var $uri_string;
+	/**
+	 * List of uri segments
+	 *
+	 * @var array
+	 * @access public
+	 */
 	var $segments		= array();
+	/**
+	 * Re-indexed list of uri segments
+	 * Starts at 1 instead of 0
+	 *
+	 * @var array
+	 * @access public
+	 */
 	var $rsegments		= array();
 
 	/**
@@ -127,6 +152,7 @@ class CI_URI {
 	 * Set the URI String
 	 *
 	 * @access	public
+	 * @param 	string
 	 * @return	string
 	 */
 	function _set_uri_string($str)
@@ -366,6 +392,11 @@ class CI_URI {
 	/**
 	 * Identical to above only it uses the re-routed segment array
 	 *
+	 * @access 	public
+	 * @param 	integer	the starting segment number
+	 * @param 	array	an array of default values
+	 * @return 	array
+	 *
 	 */
 	function ruri_to_assoc($n = 3, $default = array())
 	{

system/database/DB.php

@@ -21,6 +21,8 @@
  * @category	Database
  * @author		ExpressionEngine Dev Team
  * @link		http://codeigniter.com/user_guide/database/
+ * @param 	string
+ * @param 	bool	Determines if active record should be used or not
  */
 function &DB($params = '', $active_record_override = NULL)
 {

system/database/DB_active_rec.php

@@ -870,11 +870,11 @@ class CI_DB_active_record extends CI_DB_driver {
 	 */
 	public function limit($value, $offset = '')
 	{
-		$this->ar_limit = $value;
+		$this->ar_limit = (int) $value;
 
 		if ($offset != '')
 		{
-			$this->ar_offset = $offset;
+			$this->ar_offset = (int) $offset;
 		}
 
 		return $this;
@@ -1322,7 +1322,7 @@ class CI_DB_active_record extends CI_DB_driver {
 		{
 			if ($this->db_debug)
 			{
-				return $this->display_error('db_myst_use_index');
+				return $this->display_error('db_must_use_index');
 			}
 
 			return FALSE;

system/database/DB_cache.php

@@ -33,7 +33,7 @@ class CI_DB_Cache {
 	 * Grabs the CI super object instance so we can access it.
 	 *
 	 */
-	function CI_DB_Cache(&$db)
+	function __construct(&$db)
 	{
 		// Assign the main CI object to $this->CI
 		// and load the file helper since we use it a lot

system/database/DB_driver.php

@@ -78,7 +78,7 @@ class CI_DB_driver {
 	 *
 	 * @param array
 	 */
-	function CI_DB_driver($params)
+	function __construct($params)
 	{
 		if (is_array($params))
 		{
@@ -218,7 +218,7 @@ class CI_DB_driver {
 
 		// Some DBs have functions that return the version, and don't run special
 		// SQL queries per se. In these instances, just return the result.
-		$driver_version_exceptions = array('oci8', 'sqlite');
+		$driver_version_exceptions = array('oci8', 'sqlite', 'cubrid');
 
 		if (in_array($this->dbdriver, $driver_version_exceptions))
 		{

system/database/DB_forge.php

@@ -35,7 +35,7 @@ class CI_DB_forge {
 	 * Grabs the CI super object instance so we can access it.
 	 *
 	 */
-	function CI_DB_forge()
+	function __construct()
 	{
 		// Assign the main database object to $this->db
 		$CI =& get_instance();
@@ -234,7 +234,7 @@ class CI_DB_forge {
 			show_error('A table name is required for that operation.');
 		}
 
-		$sql = $this->_rename_table($table_name, $new_table_name);
+		$sql = $this->_rename_table($this->db->dbprefix.$table_name, $this->db->dbprefix.$new_table_name);
 		return $this->db->query($sql);
 	}
 

system/database/DB_result.php

@@ -45,7 +45,7 @@ class CI_DB_result {
 	 * @param	string	can be "object" or "array"
 	 * @return	mixed	either a result object or array
 	 */
-	function result($type = 'object')
+	public function result($type = 'object')
 	{
 		if ($type == 'array') return $this->result_array();
 		else if ($type == 'object') return $this->result_object();
@@ -60,7 +60,7 @@ class CI_DB_result {
 	 * @param class_name A string that represents the type of object you want back
 	 * @return array of objects
 	 */
-	function custom_result_object($class_name)
+	public function custom_result_object($class_name)
 	{
 		if (array_key_exists($class_name, $this->custom_result_object))
 		{
@@ -100,7 +100,7 @@ class CI_DB_result {
 	 * @access	public
 	 * @return	object
 	 */
-	function result_object()
+	public function result_object()
 	{
 		if (count($this->result_object) > 0)
 		{
@@ -132,7 +132,7 @@ class CI_DB_result {
 	 * @access	public
 	 * @return	array
 	 */
-	function result_array()
+	public function result_array()
 	{
 		if (count($this->result_array) > 0)
 		{
@@ -166,7 +166,7 @@ class CI_DB_result {
 	 * @param	string	can be "object" or "array"
 	 * @return	mixed	either a result object or array
 	 */
-	function row($n = 0, $type = 'object')
+	public function row($n = 0, $type = 'object')
 	{
 		if ( ! is_numeric($n))
 		{
@@ -198,7 +198,7 @@ class CI_DB_result {
 	 * @access	public
 	 * @return	object
 	 */
-	function set_row($key, $value = NULL)
+	public function set_row($key, $value = NULL)
 	{
 		// We cache the row data for subsequent uses
 		if ( ! is_array($this->row_data))
@@ -230,7 +230,7 @@ class CI_DB_result {
 	 * @access	public
 	 * @return	object
 	 */
-	function custom_row_object($n, $type)
+	public function custom_row_object($n, $type)
 	{
 		$result = $this->custom_result_object($type);
 
@@ -253,7 +253,7 @@ class CI_DB_result {
 	 * @access	public
 	 * @return	object
 	 */
-	function row_object($n = 0)
+	public function row_object($n = 0)
 	{
 		$result = $this->result_object();
 
@@ -278,7 +278,7 @@ class CI_DB_result {
 	 * @access	public
 	 * @return	array
 	 */
-	function row_array($n = 0)
+	public function row_array($n = 0)
 	{
 		$result = $this->result_array();
 
@@ -304,7 +304,7 @@ class CI_DB_result {
 	 * @access	public
 	 * @return	object
 	 */
-	function first_row($type = 'object')
+	public function first_row($type = 'object')
 	{
 		$result = $this->result($type);
 
@@ -323,7 +323,7 @@ class CI_DB_result {
 	 * @access	public
 	 * @return	object
 	 */
-	function last_row($type = 'object')
+	public function last_row($type = 'object')
 	{
 		$result = $this->result($type);
 
@@ -342,7 +342,7 @@ class CI_DB_result {
 	 * @access	public
 	 * @return	object
 	 */
-	function next_row($type = 'object')
+	public function next_row($type = 'object')
 	{
 		$result = $this->result($type);
 
@@ -367,7 +367,7 @@ class CI_DB_result {
 	 * @access	public
 	 * @return	object
 	 */
-	function previous_row($type = 'object')
+	public function previous_row($type = 'object')
 	{
 		$result = $this->result($type);
 
@@ -394,14 +394,14 @@ class CI_DB_result {
 	 * operational due to the unavailability of the database resource IDs with
 	 * cached results.
 	 */
-	function num_rows() { return $this->num_rows; }
+	public function num_rows() { return $this->num_rows; }
-	function num_fields() { return 0; }
+	public function num_fields() { return 0; }
-	function list_fields() { return array(); }
+	public function list_fields() { return array(); }
-	function field_data() { return array(); }
+	public function field_data() { return array(); }
-	function free_result() { return TRUE; }
+	public function free_result() { return TRUE; }
-	function _data_seek() { return TRUE; }
+	protected function _data_seek() { return TRUE; }
-	function _fetch_assoc() { return array(); }
+	protected function _fetch_assoc() { return array(); }
-	function _fetch_object() { return array(); }
+	protected function _fetch_object() { return array(); }
 
 }
 // END DB_result class

system/database/DB_utility.php

@@ -33,7 +33,7 @@ class CI_DB_utility extends CI_DB_forge {
 	 * Grabs the CI super object instance so we can access it.
 	 *
 	 */
-	function CI_DB_utility()
+	function __construct()
 	{
 		// Assign the main database object to $this->db
 		$CI =& get_instance();

system/database/drivers/cubrid/cubrid_driver.php

@@ -0,0 +1,792 @@
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.1.6 or newer
+ *
+ * @package		CodeIgniter
+ * @author		Esen Sagynov
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
+ * @license		http://codeigniter.com/user_guide/license.html
+ * @link		http://codeigniter.com
+ * @since		Version 2.0.2
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * CUBRID Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the active record
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		Esen Sagynov
+ * @link		http://codeigniter.com/user_guide/database/
+ */
+class CI_DB_cubrid_driver extends CI_DB {
+
+	// Default CUBRID Broker port. Will be used unless user
+	// explicitly specifies another one.
+	const DEFAULT_PORT = 33000;
+
+	var $dbdriver = 'cubrid';
+
+	// The character used for escaping - no need in CUBRID
+	var	$_escape_char = '';
+
+	// clause and character used for LIKE escape sequences - not used in CUBRID
+	var $_like_escape_str = '';
+	var $_like_escape_chr = '';
+
+	/**
+	 * The syntax to count rows is slightly different across different
+	 * database engines, so this string appears in each driver and is
+	 * used for the count_all() and count_all_results() functions.
+	 */
+	var $_count_string = 'SELECT COUNT(*) AS ';
+	var $_random_keyword = ' RAND()'; // database specific random keyword
+
+	/**
+	 * Non-persistent database connection
+	 *
+	 * @access	private called by the base class
+	 * @return	resource
+	 */
+	function db_connect()
+	{
+		// If no port is defined by the user, use the default value
+		if ($this->port == '')
+		{
+			$this->port = self::DEFAULT_PORT;
+		}
+
+		$conn = cubrid_connect($this->hostname, $this->port, $this->database, $this->username, $this->password);
+
+		if ($conn)
+		{
+			// Check if a user wants to run queries in dry, i.e. run the
+			// queries but not commit them.
+			if (isset($this->auto_commit) && ! $this->auto_commit)
+			{
+				cubrid_set_autocommit($conn, CUBRID_AUTOCOMMIT_FALSE);
+			}
+			else
+			{
+				cubrid_set_autocommit($conn, CUBRID_AUTOCOMMIT_TRUE);
+				$this->auto_commit = TRUE;
+			}
+		}
+
+		return $conn;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Persistent database connection
+	 * In CUBRID persistent DB connection is supported natively in CUBRID
+	 * engine which can be configured in the CUBRID Broker configuration
+	 * file by setting the CCI_PCONNECT parameter to ON. In that case, all
+	 * connections established between the client application and the
+	 * server will become persistent. This is calling the same
+	 * @cubrid_connect function will establish persisten connection
+	 * considering that the CCI_PCONNECT is ON.
+	 *
+	 * @access	private called by the base class
+	 * @return	resource
+	 */
+	function db_pconnect()
+	{
+		return $this->db_connect();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reconnect
+	 *
+	 * Keep / reestablish the db connection if no queries have been
+	 * sent for a length of time exceeding the server's idle timeout
+	 *
+	 * @access	public
+	 * @return	void
+	 */
+	function reconnect()
+	{
+		if (cubrid_ping($this->conn_id) === FALSE)
+		{
+			$this->conn_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select the database
+	 *
+	 * @access	private called by the base class
+	 * @return	resource
+	 */
+	function db_select()
+	{
+		// In CUBRID there is no need to select a database as the database
+		// is chosen at the connection time.
+		// So, to determine if the database is "selected", all we have to
+		// do is ping the server and return that value.
+		return cubrid_ping($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set client character set
+	 *
+	 * @access	public
+	 * @param	string
+	 * @param	string
+	 * @return	resource
+	 */
+	function db_set_charset($charset, $collation)
+	{
+		// In CUBRID, there is no need to set charset or collation.
+		// This is why returning true will allow the application continue
+		// its normal process.
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Version number query string
+	 *
+	 * @access	public
+	 * @return	string
+	 */
+	function _version()
+	{
+		// To obtain the CUBRID Server version, no need to run the SQL query.
+		// CUBRID PHP API provides a function to determin this value.
+		// This is why we also need to add 'cubrid' value to the list of
+		// $driver_version_exceptions array in DB_driver class in
+		// version() function.
+		return cubrid_get_server_info($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @access	private called by the base class
+	 * @param	string	an SQL query
+	 * @return	resource
+	 */
+	function _execute($sql)
+	{
+		$sql = $this->_prep_query($sql);
+		return @cubrid_query($sql, $this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prep the query
+	 *
+	 * If needed, each database adapter can prep the query string
+	 *
+	 * @access	private called by execute()
+	 * @param	string	an SQL query
+	 * @return	string
+	 */
+	function _prep_query($sql)
+	{
+		// No need to prepare
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @access	public
+	 * @return	bool
+	 */
+	function trans_begin($test_mode = FALSE)
+	{
+		if ( ! $this->trans_enabled)
+		{
+			return TRUE;
+		}
+
+		// When transactions are nested we only begin/commit/rollback the outermost ones
+		if ($this->_trans_depth > 0)
+		{
+			return TRUE;
+		}
+
+		// Reset the transaction failure flag.
+		// If the $test_mode flag is set to TRUE transactions will be rolled back
+		// even if the queries produce a successful result.
+		$this->_trans_failure = ($test_mode === TRUE) ? TRUE : FALSE;
+
+		if (cubrid_get_autocommit($this->conn_id))
+		{
+			cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_FALSE);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @access	public
+	 * @return	bool
+	 */
+	function trans_commit()
+	{
+		if ( ! $this->trans_enabled)
+		{
+			return TRUE;
+		}
+
+		// When transactions are nested we only begin/commit/rollback the outermost ones
+		if ($this->_trans_depth > 0)
+		{
+			return TRUE;
+		}
+
+		cubrid_commit($this->conn_id);
+
+		if ($this->auto_commit && ! cubrid_get_autocommit($this->conn_id))
+		{
+			cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_TRUE);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @access	public
+	 * @return	bool
+	 */
+	function trans_rollback()
+	{
+		if ( ! $this->trans_enabled)
+		{
+			return TRUE;
+		}
+
+		// When transactions are nested we only begin/commit/rollback the outermost ones
+		if ($this->_trans_depth > 0)
+		{
+			return TRUE;
+		}
+
+		cubrid_rollback($this->conn_id);
+
+		if ($this->auto_commit && ! cubrid_get_autocommit($this->conn_id))
+		{
+			cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_TRUE);
+		}
+
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Escape String
+	 *
+	 * @access	public
+	 * @param	string
+	 * @param	bool	whether or not the string will be used in a LIKE condition
+	 * @return	string
+	 */
+	function escape_str($str, $like = FALSE)
+	{
+		if (is_array($str))
+		{
+			foreach ($str as $key => $val)
+			{
+				$str[$key] = $this->escape_str($val, $like);
+			}
+
+			return $str;
+		}
+
+		if (function_exists('cubrid_real_escape_string') AND is_resource($this->conn_id))
+		{
+			$str = cubrid_real_escape_string($str, $this->conn_id);
+		}
+		else
+		{
+			$str = addslashes($str);
+		}
+
+		// escape LIKE condition wildcards
+		if ($like === TRUE)
+		{
+			$str = str_replace(array('%', '_'), array('\\%', '\\_'), $str);
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @access	public
+	 * @return	integer
+	 */
+	function affected_rows()
+	{
+		return @cubrid_affected_rows($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @access	public
+	 * @return	integer
+	 */
+	function insert_id()
+	{
+		return @cubrid_insert_id($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * "Count All" query
+	 *
+	 * Generates a platform-specific query string that counts all records in
+	 * the specified table
+	 *
+	 * @access	public
+	 * @param	string
+	 * @return	string
+	 */
+	function count_all($table = '')
+	{
+		if ($table == '')
+		{
+			return 0;
+		}
+		
+		$query = $this->query($this->_count_string . $this->_protect_identifiers('numrows') . " FROM " . $this->_protect_identifiers($table, TRUE, NULL, FALSE));
+
+		if ($query->num_rows() == 0)
+		{
+			return 0;
+		}
+
+		$row = $query->row();
+		$this->_reset_select();
+		return (int) $row->numrows;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * List table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @access	private
+	 * @param	boolean
+	 * @return	string
+	 */
+	function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = "SHOW TABLES";
+
+		if ($prefix_limit !== FALSE AND $this->dbprefix != '')
+		{
+			$sql .= " LIKE '".$this->escape_like_str($this->dbprefix)."%'";
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @return	string
+	 */
+	function _list_columns($table = '')
+	{
+		return "SHOW COLUMNS FROM ".$this->_protect_identifiers($table, TRUE, NULL, FALSE);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data query
+	 *
+	 * Generates a platform-specific query so that the column data can be retrieved
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @return	object
+	 */
+	function _field_data($table)
+	{
+		return "SELECT * FROM ".$table." LIMIT 1";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * The error message string
+	 *
+	 * @access	private
+	 * @return	string
+	 */
+	function _error_message()
+	{
+		return cubrid_error($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * The error message number
+	 *
+	 * @access	private
+	 * @return	integer
+	 */
+	function _error_number()
+	{
+		return cubrid_errno($this->conn_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Escape the SQL Identifiers
+	 *
+	 * This function escapes column and table names
+	 *
+	 * @access	private
+	 * @param	string
+	 * @return	string
+	 */
+	function _escape_identifiers($item)
+	{
+		if ($this->_escape_char == '')
+		{
+			return $item;
+		}
+
+		foreach ($this->_reserved_identifiers as $id)
+		{
+			if (strpos($item, '.'.$id) !== FALSE)
+			{
+				$str = $this->_escape_char. str_replace('.', $this->_escape_char.'.', $item);
+
+				// remove duplicates if the user already included the escape
+				return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str);
+			}
+		}
+
+		if (strpos($item, '.') !== FALSE)
+		{
+			$str = $this->_escape_char.str_replace('.', $this->_escape_char.'.'.$this->_escape_char, $item).$this->_escape_char;
+		}
+		else
+		{
+			$str = $this->_escape_char.$item.$this->_escape_char;
+		}
+
+		// remove duplicates if the user already included the escape
+		return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * From Tables
+	 *
+	 * This function implicitly groups FROM tables so there is no confusion
+	 * about operator precedence in harmony with SQL standards
+	 *
+	 * @access	public
+	 * @param	type
+	 * @return	type
+	 */
+	function _from_tables($tables)
+	{
+		if ( ! is_array($tables))
+		{
+			$tables = array($tables);
+		}
+
+		return '('.implode(', ', $tables).')';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @param	array	the insert keys
+	 * @param	array	the insert values
+	 * @return	string
+	 */
+	function _insert($table, $keys, $values)
+	{
+		return "INSERT INTO ".$table." (\"".implode('", "', $keys)."\") VALUES (".implode(', ', $values).")";
+	}
+
+	// --------------------------------------------------------------------
+
+
+	/**
+	 * Replace statement
+	 *
+	 * Generates a platform-specific replace string from the supplied data
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @param	array	the insert keys
+	 * @param	array	the insert values
+	 * @return	string
+	 */
+	function _replace($table, $keys, $values)
+	{
+		return "REPLACE INTO ".$table." (\"".implode('", "', $keys)."\") VALUES (".implode(', ', $values).")";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert_batch statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @param	array	the insert keys
+	 * @param	array	the insert values
+	 * @return	string
+	 */
+	function _insert_batch($table, $keys, $values)
+	{
+		return "INSERT INTO ".$table." (\"".implode('", "', $keys)."\") VALUES ".implode(', ', $values);
+	}
+
+	// --------------------------------------------------------------------
+
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @param	array	the update data
+	 * @param	array	the where clause
+	 * @param	array	the orderby clause
+	 * @param	array	the limit clause
+	 * @return	string
+	 */
+	function _update($table, $values, $where, $orderby = array(), $limit = FALSE)
+	{
+		foreach ($values as $key => $val)
+		{
+			$valstr[] = sprintf('"%s" = %s', $key, $val);
+		}
+
+		$limit = ( ! $limit) ? '' : ' LIMIT '.$limit;
+
+		$orderby = (count($orderby) >= 1)?' ORDER BY '.implode(", ", $orderby):'';
+
+		$sql = "UPDATE ".$table." SET ".implode(', ', $valstr);
+
+		$sql .= ($where != '' AND count($where) >=1) ? " WHERE ".implode(" ", $where) : '';
+
+		$sql .= $orderby.$limit;
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+
+	/**
+	 * Update_Batch statement
+	 *
+	 * Generates a platform-specific batch update string from the supplied data
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @param	array	the update data
+	 * @param	array	the where clause
+	 * @return	string
+	 */
+	function _update_batch($table, $values, $index, $where = NULL)
+	{
+		$ids = array();
+		$where = ($where != '' AND count($where) >=1) ? implode(" ", $where).' AND ' : '';
+
+		foreach ($values as $key => $val)
+		{
+			$ids[] = $val[$index];
+
+			foreach (array_keys($val) as $field)
+			{
+				if ($field != $index)
+				{
+					$final[$field][] = 'WHEN '.$index.' = '.$val[$index].' THEN '.$val[$field];
+				}
+			}
+		}
+
+		$sql = "UPDATE ".$table." SET ";
+		$cases = '';
+
+		foreach ($final as $k => $v)
+		{
+			$cases .= $k.' = CASE '."\n";
+			foreach ($v as $row)
+			{
+				$cases .= $row."\n";
+			}
+
+			$cases .= 'ELSE '.$k.' END, ';
+		}
+
+		$sql .= substr($cases, 0, -2);
+
+		$sql .= ' WHERE '.$where.$index.' IN ('.implode(',', $ids).')';
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 * If the database does not support the truncate() command
+	 * This function maps to "DELETE FROM table"
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @return	string
+	 */
+	function _truncate($table)
+	{
+		return "TRUNCATE ".$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @param	array	the where clause
+	 * @param	string	the limit clause
+	 * @return	string
+	 */
+	function _delete($table, $where = array(), $like = array(), $limit = FALSE)
+	{
+		$conditions = '';
+
+		if (count($where) > 0 OR count($like) > 0)
+		{
+			$conditions = "\nWHERE ";
+			$conditions .= implode("\n", $this->ar_where);
+
+			if (count($where) > 0 && count($like) > 0)
+			{
+				$conditions .= " AND ";
+			}
+			$conditions .= implode("\n", $like);
+		}
+
+		$limit = ( ! $limit) ? '' : ' LIMIT '.$limit;
+
+		return "DELETE FROM ".$table.$conditions.$limit;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Limit string
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @access	public
+	 * @param	string	the sql query string
+	 * @param	integer	the number of rows to limit the query to
+	 * @param	integer	the offset value
+	 * @return	string
+	 */
+	function _limit($sql, $limit, $offset)
+	{
+		if ($offset == 0)
+		{
+			$offset = '';
+		}
+		else
+		{
+			$offset .= ", ";
+		}
+
+		return $sql."LIMIT ".$offset.$limit;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @access	public
+	 * @param	resource
+	 * @return	void
+	 */
+	function _close($conn_id)
+	{
+		@cubrid_close($conn_id);
+	}
+
+}
+
+
+/* End of file cubrid_driver.php */
+/* Location: ./system/database/drivers/cubrid/cubrid_driver.php */

system/database/drivers/cubrid/cubrid_forge.php

@@ -0,0 +1,288 @@
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.1.6 or newer
+ *
+ * @package		CodeIgniter
+ * @author		Esen Sagynov
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
+ * @license		http://codeigniter.com/user_guide/license.html
+ * @link		http://codeigniter.com
+ * @since		Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * CUBRID Forge Class
+ *
+ * @category	Database
+ * @author		Esen Sagynov
+ * @link		http://codeigniter.com/user_guide/database/
+ */
+class CI_DB_cubrid_forge extends CI_DB_forge {
+
+	/**
+	 * Create database
+	 *
+	 * @access	private
+	 * @param	string	the database name
+	 * @return	bool
+	 */
+	function _create_database($name)
+	{
+		// CUBRID does not allow to create a database in SQL. The GUI tools
+		// have to be used for this purpose.
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Drop database
+	 *
+	 * @access	private
+	 * @param	string	the database name
+	 * @return	bool
+	 */
+	function _drop_database($name)
+	{
+		// CUBRID does not allow to drop a database in SQL. The GUI tools
+		// have to be used for this purpose.
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Process Fields
+	 *
+	 * @access	private
+	 * @param	mixed	the fields
+	 * @return	string
+	 */
+	function _process_fields($fields)
+	{
+		$current_field_count = 0;
+		$sql = '';
+
+		foreach ($fields as $field=>$attributes)
+		{
+			// Numeric field names aren't allowed in databases, so if the key is
+			// numeric, we know it was assigned by PHP and the developer manually
+			// entered the field information, so we'll simply add it to the list
+			if (is_numeric($field))
+			{
+				$sql .= "\n\t$attributes";
+			}
+			else
+			{
+				$attributes = array_change_key_case($attributes, CASE_UPPER);
+
+				$sql .= "\n\t\"" . $this->db->_protect_identifiers($field) . "\"";
+
+				if (array_key_exists('NAME', $attributes))
+				{
+					$sql .= ' '.$this->db->_protect_identifiers($attributes['NAME']).' ';
+				}
+
+				if (array_key_exists('TYPE', $attributes))
+				{
+					$sql .= ' '.$attributes['TYPE'];
+
+					if (array_key_exists('CONSTRAINT', $attributes))
+					{
+						switch ($attributes['TYPE'])
+						{
+							case 'decimal':
+							case 'float':
+							case 'numeric':
+								$sql .= '('.implode(',', $attributes['CONSTRAINT']).')';
+								break;
+							case 'enum': 	// As of version 8.4.0 CUBRID does not support
+											// enum data type.
+											break;
+							case 'set':
+								$sql .= '("'.implode('","', $attributes['CONSTRAINT']).'")';
+								break;
+							default:
+								$sql .= '('.$attributes['CONSTRAINT'].')';
+						}
+					}
+				}
+
+				if (array_key_exists('UNSIGNED', $attributes) && $attributes['UNSIGNED'] === TRUE)
+				{
+					//$sql .= ' UNSIGNED';
+					// As of version 8.4.0 CUBRID does not support UNSIGNED INTEGER data type.
+					// Will be supported in the next release as a part of MySQL Compatibility.
+				}
+
+				if (array_key_exists('DEFAULT', $attributes))
+				{
+					$sql .= ' DEFAULT \''.$attributes['DEFAULT'].'\'';
+				}
+
+				if (array_key_exists('NULL', $attributes) && $attributes['NULL'] === TRUE)
+				{
+					$sql .= ' NULL';
+				}
+				else
+				{
+					$sql .= ' NOT NULL';
+				}
+
+				if (array_key_exists('AUTO_INCREMENT', $attributes) && $attributes['AUTO_INCREMENT'] === TRUE)
+				{
+					$sql .= ' AUTO_INCREMENT';
+				}
+
+				if (array_key_exists('UNIQUE', $attributes) && $attributes['UNIQUE'] === TRUE)
+				{
+					$sql .= ' UNIQUE';
+				}
+			}
+
+			// don't add a comma on the end of the last field
+			if (++$current_field_count < count($fields))
+			{
+				$sql .= ',';
+			}
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create Table
+	 *
+	 * @access	private
+	 * @param	string	the table name
+	 * @param	mixed	the fields
+	 * @param	mixed	primary key(s)
+	 * @param	mixed	key(s)
+	 * @param	boolean	should 'IF NOT EXISTS' be added to the SQL
+	 * @return	bool
+	 */
+	function _create_table($table, $fields, $primary_keys, $keys, $if_not_exists)
+	{
+		$sql = 'CREATE TABLE ';
+
+		if ($if_not_exists === TRUE)
+		{
+			//$sql .= 'IF NOT EXISTS ';
+			// As of version 8.4.0 CUBRID does not support this SQL syntax.
+		}
+
+		$sql .= $this->db->_escape_identifiers($table)." (";
+
+		$sql .= $this->_process_fields($fields);
+
+		// If there is a PK defined
+		if (count($primary_keys) > 0)
+		{
+			$key_name = "pk_" . $table . "_" .
+				$this->db->_protect_identifiers(implode('_', $primary_keys));
+			
+			$primary_keys = $this->db->_protect_identifiers($primary_keys);
+			$sql .= ",\n\tCONSTRAINT " . $key_name . " PRIMARY KEY(" . implode(', ', $primary_keys) . ")";
+		}
+
+		if (is_array($keys) && count($keys) > 0)
+		{
+			foreach ($keys as $key)
+			{
+				if (is_array($key))
+				{
+					$key_name = $this->db->_protect_identifiers(implode('_', $key));
+					$key = $this->db->_protect_identifiers($key);
+				}
+				else
+				{
+					$key_name = $this->db->_protect_identifiers($key);
+					$key = array($key_name);
+				}
+				
+				$sql .= ",\n\tKEY \"{$key_name}\" (" . implode(', ', $key) . ")";
+			}
+		}
+
+		$sql .= "\n);";
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Drop Table
+	 *
+	 * @access	private
+	 * @return	string
+	 */
+	function _drop_table($table)
+	{
+		return "DROP TABLE IF EXISTS ".$this->db->_escape_identifiers($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Alter table query
+	 *
+	 * Generates a platform-specific query so that a table can be altered
+	 * Called by add_column(), drop_column(), and column_alter(),
+	 *
+	 * @access	private
+	 * @param	string	the ALTER type (ADD, DROP, CHANGE)
+	 * @param	string	the column name
+	 * @param	array	fields
+	 * @param	string	the field after which we should add the new field
+	 * @return	object
+	 */
+	function _alter_table($alter_type, $table, $fields, $after_field = '')
+	{
+		$sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table)." $alter_type ";
+
+		// DROP has everything it needs now.
+		if ($alter_type == 'DROP')
+		{
+			return $sql.$this->db->_protect_identifiers($fields);
+		}
+
+		$sql .= $this->_process_fields($fields);
+
+		if ($after_field != '')
+		{
+			$sql .= ' AFTER ' . $this->db->_protect_identifiers($after_field);
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rename a table
+	 *
+	 * Generates a platform-specific query so that a table can be renamed
+	 *
+	 * @access	private
+	 * @param	string	the old table name
+	 * @param	string	the new table name
+	 * @return	string
+	 */
+	function _rename_table($table_name, $new_table_name)
+	{
+		$sql = 'RENAME TABLE '.$this->db->_protect_identifiers($table_name)." AS ".$this->db->_protect_identifiers($new_table_name);
+		return $sql;
+	}
+
+}
+
+/* End of file cubrid_forge.php */
+/* Location: ./system/database/drivers/cubrid/cubrid_forge.php */

system/database/drivers/cubrid/cubrid_result.php

@@ -0,0 +1,202 @@
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.1.6 or newer
+ *
+ * @package		CodeIgniter
+ * @author		Esen Sagynov
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
+ * @license		http://codeigniter.com/user_guide/license.html
+ * @link		http://codeigniter.com
+ * @since		Version 2.0.2
+ * @filesource
+ */
+
+// --------------------------------------------------------------------
+
+/**
+ * CUBRID Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @category	Database
+ * @author		Esen Sagynov
+ * @link		http://codeigniter.com/user_guide/database/
+ */
+class CI_DB_cubrid_result extends CI_DB_result {
+
+	/**
+	 * Number of rows in the result set
+	 *
+	 * @access	public
+	 * @return	integer
+	 */
+	function num_rows()
+	{
+		return @cubrid_num_rows($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @access	public
+	 * @return	integer
+	 */
+	function num_fields()
+	{
+		return @cubrid_num_fields($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @access	public
+	 * @return	array
+	 */
+	function list_fields()
+	{
+		return cubrid_column_names($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @access	public
+	 * @return	array
+	 */
+	function field_data()
+	{
+		$retval = array();
+
+		$tablePrimaryKeys = array();
+
+		while ($field = cubrid_fetch_field($this->result_id))
+		{
+			$F				= new stdClass();
+			$F->name		= $field->name;
+			$F->type		= $field->type;
+			$F->default		= $field->def;
+			$F->max_length	= $field->max_length;
+
+			// At this moment primary_key property is not returned when
+			// cubrid_fetch_field is called. The following code will
+			// provide a patch for it. primary_key property will be added
+			// in the next release.
+
+			// TODO: later version of CUBRID will provide primary_key
+			// property.
+			// When PK is defined in CUBRID, an index is automatically
+			// created in the db_index system table in the form of
+			// pk_tblname_fieldname. So the following will count how many
+			// columns are there which satisfy this format.
+			// The query will search for exact single columns, thus
+			// compound PK is not supported.
+			$res = cubrid_query($this->conn_id,
+				"SELECT COUNT(*) FROM db_index WHERE class_name = '" . $field->table .
+				"' AND is_primary_key = 'YES' AND index_name = 'pk_" .
+				$field->table . "_" . $field->name . "'"
+			);
+
+			if ($res)
+			{
+				$row = cubrid_fetch_array($res, CUBRID_NUM);
+				$F->primary_key = ($row[0] > 0 ? 1 : null);
+			}
+			else
+			{
+				$F->primary_key = null;
+			}
+
+			if (is_resource($res))
+			{
+				cubrid_close_request($res);
+				$this->result_id = FALSE;
+			}
+
+			$retval[] = $F;
+		}
+
+		return $retval;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	null
+	 */
+	function free_result()
+	{
+		if(is_resource($this->result_id) ||
+			get_resource_type($this->result_id) == "Unknown" &&
+			preg_match('/Resource id #/', strval($this->result_id)))
+		{
+			cubrid_close_request($this->result_id);
+			$this->result_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Data Seek
+	 *
+	 * Moves the internal pointer to the desired offset. We call
+	 * this internally before fetching results to make sure the
+	 * result set starts at zero
+	 *
+	 * @access	private
+	 * @return	array
+	 */
+	function _data_seek($n = 0)
+	{
+		return cubrid_data_seek($this->result_id, $n);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @access	private
+	 * @return	array
+	 */
+	function _fetch_assoc()
+	{
+		return cubrid_fetch_assoc($this->result_id);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @access	private
+	 * @return	object
+	 */
+	function _fetch_object()
+	{
+		return cubrid_fetch_object($this->result_id);
+	}
+
+}
+
+
+/* End of file cubrid_result.php */
+/* Location: ./system/database/drivers/cubrid/cubrid_result.php */

system/database/drivers/cubrid/cubrid_utility.php

@@ -0,0 +1,108 @@
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.1.6 or newer
+ *
+ * @package		CodeIgniter
+ * @author		Esen Sagynov
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
+ * @license		http://codeigniter.com/user_guide/license.html
+ * @link		http://codeigniter.com
+ * @since		Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * CUBRID Utility Class
+ *
+ * @category	Database
+ * @author		Esen Sagynov
+ * @link		http://codeigniter.com/user_guide/database/
+ */
+class CI_DB_cubrid_utility extends CI_DB_utility {
+
+	/**
+	 * List databases
+	 *
+	 * @access	private
+	 * @return	array
+	 */
+	function _list_databases()
+	{
+		// CUBRID does not allow to see the list of all databases on the
+		// server. It is the way its architecture is designed. Every
+		// database is independent and isolated.
+		// For this reason we can return only the name of the currect
+		// connected database.
+		if ($this->conn_id)
+		{
+			return "SELECT '" . $this->database . "'";
+		}
+		else
+		{
+			return FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Optimize table query
+	 *
+	 * Generates a platform-specific query so that a table can be optimized
+	 *
+	 * @access	private
+	 * @param	string	the table name
+	 * @return	object
+	 * @link 	http://www.cubrid.org/manual/840/en/Optimize%20Database
+	 */
+	function _optimize_table($table)
+	{
+		// No SQL based support in CUBRID as of version 8.4.0. Database or
+		// table optimization can be performed using CUBRID Manager
+		// database administration tool. See the link above for more info.
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Repair table query
+	 *
+	 * Generates a platform-specific query so that a table can be repaired
+	 *
+	 * @access	private
+	 * @param	string	the table name
+	 * @return	object
+	 * @link 	http://www.cubrid.org/manual/840/en/Checking%20Database%20Consistency
+	 */
+	function _repair_table($table)
+	{
+		// Not supported in CUBRID as of version 8.4.0. Database or
+		// table consistency can be checked using CUBRID Manager
+		// database administration tool. See the link above for more info.
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+	/**
+	 * CUBRID Export
+	 *
+	 * @access	private
+	 * @param	array	Preferences
+	 * @return	mixed
+	 */
+	function _backup($params = array())
+	{
+		// No SQL based support in CUBRID as of version 8.4.0. Database or
+		// table backup can be performed using CUBRID Manager
+		// database administration tool.
+		return $this->db->display_error('db_unsuported_feature');
+	}
+}
+
+/* End of file cubrid_utility.php */
+/* Location: ./system/database/drivers/cubrid/cubrid_utility.php */

system/database/drivers/cubrid/index.html

@@ -0,0 +1,10 @@
+<html>
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>

system/database/drivers/mssql/mssql_driver.php

@@ -367,6 +367,7 @@ class CI_DB_mssql_driver extends CI_DB {
 		}
 
 		$row = $query->row();
+		$this->_reset_select();
 		return (int) $row->numrows;
 	}
 

system/database/drivers/mysql/mysql_driver.php

@@ -54,6 +54,9 @@ class CI_DB_mysql_driver extends CI_DB {
 	var $_count_string = 'SELECT COUNT(*) AS ';
 	var $_random_keyword = ' RAND()'; // database specific random keyword
 
+	// whether SET NAMES must be used to set the character set
+	var $use_set_names;
+	
 	/**
 	 * Non-persistent database connection
 	 *
@@ -132,15 +135,13 @@ class CI_DB_mysql_driver extends CI_DB {
 	 */
 	function db_set_charset($charset, $collation)
 	{
-		static $use_set_names;
+		if ( ! isset($this->use_set_names))
-		
-		if ( ! isset($use_set_names))
 		{
 			// mysql_set_charset() requires PHP >= 5.2.3 and MySQL >= 5.0.7, use SET NAMES as fallback
-			$use_set_names = (version_compare(PHP_VERSION, '5.2.3', '>=') && version_compare(mysql_get_server_info(), '5.0.7', '>=')) ? FALSE : TRUE;
+			$this->use_set_names = (version_compare(PHP_VERSION, '5.2.3', '>=') && version_compare(mysql_get_server_info(), '5.0.7', '>=')) ? FALSE : TRUE;
 		}
 
-		if ($use_set_names)
+		if ($this->use_set_names === TRUE)
 		{
 			return @mysql_query("SET NAMES '".$this->escape_str($charset)."' COLLATE '".$this->escape_str($collation)."'", $this->conn_id);
 		}
@@ -384,6 +385,7 @@ class CI_DB_mysql_driver extends CI_DB {
 		}
 
 		$row = $query->row();
+		$this->_reset_select();
 		return (int) $row->numrows;
 	}
 
@@ -439,7 +441,7 @@ class CI_DB_mysql_driver extends CI_DB {
 	 */
 	function _field_data($table)
 	{
-		return "SELECT * FROM ".$table." LIMIT 1";
+		return "DESCRIBE ".$table;
 	}
 
 	// --------------------------------------------------------------------

system/database/drivers/mysql/mysql_result.php

@@ -84,14 +84,19 @@ class CI_DB_mysql_result extends CI_DB_result {
 	function field_data()
 	{
 		$retval = array();
-		while ($field = mysql_fetch_field($this->result_id))
+		while ($field = mysql_fetch_object($this->result_id))
 		{
+			preg_match('/([a-zA-Z]+)(\(\d+\))?/', $field->Type, $matches);
+
+			$type = (array_key_exists(1, $matches)) ? $matches[1] : NULL;
+			$length = (array_key_exists(2, $matches)) ? preg_replace('/[^\d]/', '', $matches[2]) : NULL;
+
 			$F				= new stdClass();
-			$F->name		= $field->name;
+			$F->name		= $field->Field;
-			$F->type		= $field->type;
+			$F->type		= $type;
-			$F->default		= $field->def;
+			$F->default		= $field->Default;
-			$F->max_length	= $field->max_length;
+			$F->max_length	= $length;
-			$F->primary_key = $field->primary_key;
+			$F->primary_key = ( $field->Key == 'PRI' ? 1 : 0 );
 
 			$retval[] = $F;
 		}

system/database/drivers/mysql/mysql_utility.php

@@ -96,7 +96,7 @@ class CI_DB_mysql_utility extends CI_DB_utility {
 			}
 
 			// Get the table schema
-			$query = $this->db->query("SHOW CREATE TABLE `".$this->db->database.'`.'.$table);
+			$query = $this->db->query("SHOW CREATE TABLE `".$this->db->database.'`.`'.$table.'`');
 
 			// No result means the table name was invalid
 			if ($query === FALSE)

system/database/drivers/mysqli/mysqli_driver.php

@@ -54,6 +54,9 @@ class CI_DB_mysqli_driver extends CI_DB {
 	 */
 	var $delete_hack = TRUE;
 
+	// whether SET NAMES must be used to set the character set
+	var $use_set_names;
+	
 	// --------------------------------------------------------------------
 
 	/**
@@ -132,15 +135,13 @@ class CI_DB_mysqli_driver extends CI_DB {
 	 */
 	function _db_set_charset($charset, $collation)
 	{
-		static $use_set_names;
+		if ( ! isset($this->use_set_names))
-		
-		if ( ! isset($use_set_names))
 		{
 			// mysqli_set_charset() requires MySQL >= 5.0.7, use SET NAMES as fallback
-			$use_set_names = (version_compare(mysqli_get_server_info($this->conn_id), '5.0.7', '>=')) ? FALSE : TRUE;
+			$this->use_set_names = (version_compare(mysqli_get_server_info($this->conn_id), '5.0.7', '>=')) ? FALSE : TRUE;
 		}
 
-		if ($use_set_names)
+		if ($this->use_set_names === TRUE)
 		{
 			return @mysqli_query($this->conn_id, "SET NAMES '".$this->escape_str($charset)."' COLLATE '".$this->escape_str($collation)."'");
 		}
@@ -385,6 +386,7 @@ class CI_DB_mysqli_driver extends CI_DB {
 		}
 
 		$row = $query->row();
+		$this->_reset_select();
 		return (int) $row->numrows;
 	}
 
@@ -440,7 +442,7 @@ class CI_DB_mysqli_driver extends CI_DB {
 	 */
 	function _field_data($table)
 	{
-		return "SELECT * FROM ".$table." LIMIT 1";
+		return "DESCRIBE ".$table;
 	}
 
 	// --------------------------------------------------------------------
@@ -571,6 +573,25 @@ class CI_DB_mysqli_driver extends CI_DB {
 
 	// --------------------------------------------------------------------
 
+
+	/**
+	 * Replace statement
+	 *
+	 * Generates a platform-specific replace string from the supplied data
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @param	array	the insert keys
+	 * @param	array	the insert values
+	 * @return	string
+	 */
+	function _replace($table, $keys, $values)
+	{
+		return "REPLACE INTO ".$table." (".implode(', ', $keys).") VALUES (".implode(', ', $values).")";
+	}
+	
+	// --------------------------------------------------------------------
+
 	/**
 	 * Update statement
 	 *

system/database/drivers/mysqli/mysqli_result.php

@@ -84,14 +84,19 @@ class CI_DB_mysqli_result extends CI_DB_result {
 	function field_data()
 	{
 		$retval = array();
-		while ($field = mysqli_fetch_field($this->result_id))
+		while ($field = mysqli_fetch_object($this->result_id))
 		{
+			preg_match('/([a-zA-Z]+)(\(\d+\))?/', $field->Type, $matches);
+
+			$type = (array_key_exists(1, $matches)) ? $matches[1] : NULL;
+			$length = (array_key_exists(2, $matches)) ? preg_replace('/[^\d]/', '', $matches[2]) : NULL;
+
 			$F				= new stdClass();
-			$F->name		= $field->name;
+			$F->name		= $field->Field;
-			$F->type		= $field->type;
+			$F->type		= $type;
-			$F->default		= $field->def;
+			$F->default		= $field->Default;
-			$F->max_length	= $field->max_length;
+			$F->max_length	= $length;
-			$F->primary_key = ($field->flags & MYSQLI_PRI_KEY_FLAG) ? 1 : 0;
+			$F->primary_key = ( $field->Key == 'PRI' ? 1 : 0 );
 
 			$retval[] = $F;
 		}

system/database/drivers/oci8/oci8_driver.php

@@ -35,8 +35,6 @@
  * This is a modification of the DB_driver class to
  * permit access to oracle databases
  *
- * NOTE: this uses the PHP 4 oci methods
- *
  * @author	  Kelly McArdle
  *
  */
@@ -77,9 +75,9 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * @access  private called by the base class
 	 * @return  resource
 	 */
-	function db_connect()
+	public function db_connect()
 	{
-		return @ocilogon($this->username, $this->password, $this->hostname);
+		return @oci_connect($this->username, $this->password, $this->hostname, $this->char_set);
 	}
 
 	// --------------------------------------------------------------------
@@ -90,9 +88,9 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * @access  private called by the base class
 	 * @return  resource
 	 */
-	function db_pconnect()
+	public function db_pconnect()
 	{
-		return @ociplogon($this->username, $this->password, $this->hostname);
+		return @oci_pconnect($this->username, $this->password, $this->hostname, $this->char_set);
 	}
 
 	// --------------------------------------------------------------------
@@ -106,9 +104,10 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * @access	public
 	 * @return	void
 	 */
-	function reconnect()
+	public function reconnect()
 	{
 		// not implemented in oracle
+		return;
 	}
 
 	// --------------------------------------------------------------------
@@ -119,8 +118,9 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * @access  private called by the base class
 	 * @return  resource
 	 */
-	function db_select()
+	public function db_select()
 	{
+		// Not in Oracle - schemas are actually usernames
 		return TRUE;
 	}
 
@@ -134,7 +134,7 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * @param	string
 	 * @return	resource
 	 */
-	function db_set_charset($charset, $collation)
+	public function db_set_charset($charset, $collation)
 	{
 		// @todo - add support if needed
 		return TRUE;
@@ -145,12 +145,12 @@ class CI_DB_oci8_driver extends CI_DB {
 	/**
 	 * Version number query string
 	 *
-	 * @access  public
+	 * @access  protected
 	 * @return  string
 	 */
-	function _version()
+	protected function _version()
 	{
-		return ociserverversion($this->conn_id);
+		return oci_server_version($this->conn_id);
 	}
 
 	// --------------------------------------------------------------------
@@ -158,18 +158,18 @@ class CI_DB_oci8_driver extends CI_DB {
 	/**
 	 * Execute the query
 	 *
-	 * @access  private called by the base class
+	 * @access  protected  called by the base class
 	 * @param   string  an SQL query
 	 * @return  resource
 	 */
-	function _execute($sql)
+	protected function _execute($sql)
 	{
 		// oracle must parse the query before it is run. All of the actions with
 		// the query are based on the statement id returned by ociparse
 		$this->stmt_id = FALSE;
 		$this->_set_stmt_id($sql);
-		ocisetprefetch($this->stmt_id, 1000);
+		oci_set_prefetch($this->stmt_id, 1000);
-		return @ociexecute($this->stmt_id, $this->_commit);
+		return @oci_execute($this->stmt_id, $this->_commit);
 	}
 
 	/**
@@ -179,11 +179,11 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * @param   string  an SQL query
 	 * @return  none
 	 */
-	function _set_stmt_id($sql)
+	private function _set_stmt_id($sql)
 	{
 		if ( ! is_resource($this->stmt_id))
 		{
-			$this->stmt_id = ociparse($this->conn_id, $this->_prep_query($sql));
+			$this->stmt_id = oci_parse($this->conn_id, $this->_prep_query($sql));
 		}
 	}
 
@@ -198,7 +198,7 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * @param   string  an SQL query
 	 * @return  string
 	 */
-	function _prep_query($sql)
+	private function _prep_query($sql)
 	{
 		return $sql;
 	}
@@ -211,9 +211,9 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * @access  public
 	 * @return  cursor id
 	 */
-	function get_cursor()
+	public function get_cursor()
 	{
-		$this->curs_id = ocinewcursor($this->conn_id);
+		$this->curs_id = oci_new_cursor($this->conn_id);
 		return $this->curs_id;
 	}
 
@@ -237,7 +237,7 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * type		yes		the type of the parameter
 	 * length	yes		the max size of the parameter
 	 */
-	function stored_procedure($package, $procedure, $params)
+	public function stored_procedure($package, $procedure, $params)
 	{
 		if ($package == '' OR $procedure == '' OR ! is_array($params))
 		{
@@ -257,7 +257,7 @@ class CI_DB_oci8_driver extends CI_DB {
 		{
 			$sql .= $param['name'] . ",";
 
-			if (array_key_exists('type', $param) && ($param['type'] == OCI_B_CURSOR))
+			if (array_key_exists('type', $param) && ($param['type'] === OCI_B_CURSOR))
 			{
 				$have_cursor = TRUE;
 			}
@@ -278,7 +278,7 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * @access  private
 	 * @return  none
 	 */
-	function _bind_params($params)
+	private function _bind_params($params)
 	{
 		if ( ! is_array($params) OR ! is_resource($this->stmt_id))
 		{
@@ -295,7 +295,7 @@ class CI_DB_oci8_driver extends CI_DB {
 				}
 			}
 
-			ocibindbyname($this->stmt_id, $param['name'], $param['value'], $param['length'], $param['type']);
+			oci_bind_by_name($this->stmt_id, $param['name'], $param['value'], $param['length'], $param['type']);
 		}
 	}
 
@@ -307,7 +307,7 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * @access	public
 	 * @return	bool
 	 */
-	function trans_begin($test_mode = FALSE)
+	public function trans_begin($test_mode = FALSE)
 	{
 		if ( ! $this->trans_enabled)
 		{
@@ -337,7 +337,7 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * @access	public
 	 * @return	bool
 	 */
-	function trans_commit()
+	public function trans_commit()
 	{
 		if ( ! $this->trans_enabled)
 		{
@@ -350,7 +350,7 @@ class CI_DB_oci8_driver extends CI_DB {
 			return TRUE;
 		}
 
-		$ret = OCIcommit($this->conn_id);
+		$ret = oci_commit($this->conn_id);
 		$this->_commit = OCI_COMMIT_ON_SUCCESS;
 		return $ret;
 	}
@@ -363,7 +363,7 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * @access	public
 	 * @return	bool
 	 */
-	function trans_rollback()
+	public function trans_rollback()
 	{
 		if ( ! $this->trans_enabled)
 		{
@@ -376,7 +376,7 @@ class CI_DB_oci8_driver extends CI_DB {
 			return TRUE;
 		}
 
-		$ret = OCIrollback($this->conn_id);
+		$ret = oci_rollback($this->conn_id);
 		$this->_commit = OCI_COMMIT_ON_SUCCESS;
 		return $ret;
 	}
@@ -391,7 +391,7 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * @param	bool	whether or not the string will be used in a LIKE condition
 	 * @return  string
 	 */
-	function escape_str($str, $like = FALSE)
+	public function escape_str($str, $like = FALSE)
 	{
 		if (is_array($str))
 		{
@@ -424,9 +424,9 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * @access  public
 	 * @return  integer
 	 */
-	function affected_rows()
+	public function affected_rows()
 	{
-		return @ocirowcount($this->stmt_id);
+		return @oci_num_rows($this->stmt_id);
 	}
 
 	// --------------------------------------------------------------------
@@ -437,7 +437,7 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * @access  public
 	 * @return  integer
 	 */
-	function insert_id()
+	public function insert_id()
 	{
 		// not supported in oracle
 		return $this->display_error('db_unsupported_function');
@@ -455,7 +455,7 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * @param   string
 	 * @return  string
 	 */
-	function count_all($table = '')
+	public function count_all($table = '')
 	{
 		if ($table == '')
 		{
@@ -470,6 +470,7 @@ class CI_DB_oci8_driver extends CI_DB {
 		}
 
 		$row = $query->row();
+		$this->_reset_select();
 		return (int) $row->numrows;
 	}
 
@@ -480,11 +481,11 @@ class CI_DB_oci8_driver extends CI_DB {
 	 *
 	 * Generates a platform-specific query string so that the table names can be fetched
 	 *
-	 * @access  private
+	 * @access	protected
 	 * @param	boolean
-	 * @return  string
+	 * @return	string
 	 */
-	function _list_tables($prefix_limit = FALSE)
+	protected function _list_tables($prefix_limit = FALSE)
 	{
 		$sql = "SELECT TABLE_NAME FROM ALL_TABLES";
 
@@ -503,11 +504,11 @@ class CI_DB_oci8_driver extends CI_DB {
 	 *
 	 * Generates a platform-specific query string so that the column names can be fetched
 	 *
-	 * @access  public
+	 * @access  protected
 	 * @param   string  the table name
 	 * @return  string
 	 */
-	function _list_columns($table = '')
+	protected function _list_columns($table = '')
 	{
 		return "SELECT COLUMN_NAME FROM all_tab_columns WHERE table_name = '$table'";
 	}
@@ -523,7 +524,7 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * @param   string  the table name
 	 * @return  object
 	 */
-	function _field_data($table)
+	protected function _field_data($table)
 	{
 		return "SELECT * FROM ".$table." where rownum = 1";
 	}
@@ -533,12 +534,13 @@ class CI_DB_oci8_driver extends CI_DB {
 	/**
 	 * The error message string
 	 *
-	 * @access  private
+	 * @access  protected
 	 * @return  string
 	 */
-	function _error_message()
+	protected function _error_message()
 	{
-		$error = ocierror($this->conn_id);
+		// If the error was during connection, no conn_id should be passed
+		$error = is_resource($this->conn_id) ? oci_error($this->conn_id) : oci_error();
 		return $error['message'];
 	}
 
@@ -547,12 +549,13 @@ class CI_DB_oci8_driver extends CI_DB {
 	/**
 	 * The error message number
 	 *
-	 * @access  private
+	 * @access  protected
 	 * @return  integer
 	 */
-	function _error_number()
+	protected function _error_number()
 	{
-		$error = ocierror($this->conn_id);
+		// Same as _error_message()
+		$error = is_resource($this->conn_id) ? oci_error($this->conn_id) : oci_error();
 		return $error['code'];
 	}
 
@@ -563,11 +566,11 @@ class CI_DB_oci8_driver extends CI_DB {
 	 *
 	 * This function escapes column and table names
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @param	string
 	 * @return	string
 	 */
-	function _escape_identifiers($item)
+	protected function _escape_identifiers($item)
 	{
 		if ($this->_escape_char == '')
 		{
@@ -606,11 +609,11 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * This function implicitly groups FROM tables so there is no confusion
 	 * about operator precedence in harmony with SQL standards
 	 *
-	 * @access	public
+	 * @access	protected
 	 * @param	type
 	 * @return	type
 	 */
-	function _from_tables($tables)
+	protected function _from_tables($tables)
 	{
 		if ( ! is_array($tables))
 		{
@@ -633,9 +636,37 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * @param   array   the insert values
 	 * @return  string
 	 */
-	function _insert($table, $keys, $values)
+	protected function _insert($table, $keys, $values)
 	{
-	return "INSERT INTO ".$table." (".implode(', ', $keys).") VALUES (".implode(', ', $values).")";
+		return "INSERT INTO ".$table." (".implode(', ', $keys).") VALUES (".implode(', ', $values).")";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert_batch statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data
+	 *
+	 * @access      protected
+	 * @param       string  the table name
+	 * @param       array   the insert keys
+	 * @param       array   the insert values
+	 * @return      string
+	 */
+	protected function _insert_batch($table, $keys, $values)
+	{
+		$keys = implode(', ', $keys);
+		$sql = "INSERT ALL\n";
+
+		for ($i = 0, $c = count($values); $i < $c; $i++)
+		{
+			$sql .= '	INTO ' . $table . ' (' . $keys . ') VALUES ' . $values[$i] . "\n";
+		}
+
+		$sql .= 'SELECT * FROM dual';
+
+		return $sql;
 	}
 
 	// --------------------------------------------------------------------
@@ -645,7 +676,7 @@ class CI_DB_oci8_driver extends CI_DB {
 	 *
 	 * Generates a platform-specific update string from the supplied data
 	 *
-	 * @access	public
+	 * @access	protected
 	 * @param	string	the table name
 	 * @param	array	the update data
 	 * @param	array	the where clause
@@ -653,7 +684,7 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * @param	array	the limit clause
 	 * @return	string
 	 */
-	function _update($table, $values, $where, $orderby = array(), $limit = FALSE)
+	protected function _update($table, $values, $where, $orderby = array(), $limit = FALSE)
 	{
 		foreach ($values as $key => $val)
 		{
@@ -682,11 +713,11 @@ class CI_DB_oci8_driver extends CI_DB {
 	 * If the database does not support the truncate() command
 	 * This function maps to "DELETE FROM table"
 	 *
-	 * @access	public
+	 * @access	protected
 	 * @param	string	the table name
 	 * @return	string
 	 */
-	function _truncate($table)
+	protected function _truncate($table)
 	{
 		return "TRUNCATE TABLE ".$table;
 	}
@@ -698,13 +729,13 @@ class CI_DB_oci8_driver extends CI_DB {
 	 *
 	 * Generates a platform-specific delete string from the supplied data
 	 *
-	 * @access	public
+	 * @access	protected
 	 * @param	string	the table name
 	 * @param	array	the where clause
 	 * @param	string	the limit clause
 	 * @return	string
 	 */
-	function _delete($table, $where = array(), $like = array(), $limit = FALSE)
+	protected function _delete($table, $where = array(), $like = array(), $limit = FALSE)
 	{
 		$conditions = '';
 
@@ -732,13 +763,13 @@ class CI_DB_oci8_driver extends CI_DB {
 	 *
 	 * Generates a platform-specific LIMIT clause
 	 *
-	 * @access  public
+	 * @access  protected
 	 * @param   string  the sql query string
 	 * @param   integer the number of rows to limit the query to
 	 * @param   integer the offset value
 	 * @return  string
 	 */
-	function _limit($sql, $limit, $offset)
+	protected function _limit($sql, $limit, $offset)
 	{
 		$limit = $offset + $limit;
 		$newsql = "SELECT * FROM (select inner_query.*, rownum rnum FROM ($sql) inner_query WHERE rownum < $limit)";
@@ -759,13 +790,13 @@ class CI_DB_oci8_driver extends CI_DB {
 	/**
 	 * Close DB Connection
 	 *
-	 * @access  public
+	 * @access  protected
 	 * @param   resource
 	 * @return  void
 	 */
-	function _close($conn_id)
+	protected function _close($conn_id)
 	{
-		@ocilogoff($conn_id);
+		@oci_close($conn_id);
 	}
 
 

system/database/drivers/oci8/oci8_result.php

@@ -40,14 +40,17 @@ class CI_DB_oci8_result extends CI_DB_result {
 	 * @access  public
 	 * @return  integer
 	 */
-	function num_rows()
+	public function num_rows()
 	{
-		$rowcount = count($this->result_array());
+		if ($this->num_rows === 0 && count($this->result_array()) > 0)
-		@ociexecute($this->stmt_id);
-
-		if ($this->curs_id)
 		{
-			@ociexecute($this->curs_id);
+			$this->num_rows = count($this->result_array());
+			@oci_execute($this->stmt_id);
+
+			if ($this->curs_id)
+			{
+				@oci_execute($this->curs_id);
+			}
 		}
 
 		return $rowcount;
@@ -61,9 +64,9 @@ class CI_DB_oci8_result extends CI_DB_result {
 	 * @access  public
 	 * @return  integer
 	 */
-	function num_fields()
+	public function num_fields()
 	{
-		$count = @ocinumcols($this->stmt_id);
+		$count = @oci_num_fields($this->stmt_id);
 
 		// if we used a limit we subtract it
 		if ($this->limit_used)
@@ -84,13 +87,12 @@ class CI_DB_oci8_result extends CI_DB_result {
 	 * @access	public
 	 * @return	array
 	 */
-	function list_fields()
+	public function list_fields()
 	{
 		$field_names = array();
-		$fieldCount = $this->num_fields();
+		for ($c = 1, $fieldCount = $this->num_fields(); $c <= $fieldCount; $c++)
-		for ($c = 1; $c <= $fieldCount; $c++)
 		{
-			$field_names[] = ocicolumnname($this->stmt_id, $c);
+			$field_names[] = oci_field_name($this->stmt_id, $c);
 		}
 		return $field_names;
 	}
@@ -105,16 +107,15 @@ class CI_DB_oci8_result extends CI_DB_result {
 	 * @access  public
 	 * @return  array
 	 */
-	function field_data()
+	public function field_data()
 	{
 		$retval = array();
-		$fieldCount = $this->num_fields();
+		for ($c = 1, $fieldCount = $this->num_fields(); $c <= $fieldCount; $c++)
-		for ($c = 1; $c <= $fieldCount; $c++)
 		{
-			$F				= new stdClass();
+			$F			= new stdClass();
-			$F->name		= ocicolumnname($this->stmt_id, $c);
+			$F->name		= oci_field_name($this->stmt_id, $c);
-			$F->type		= ocicolumntype($this->stmt_id, $c);
+			$F->type		= oci_field_type($this->stmt_id, $c);
-			$F->max_length  = ocicolumnsize($this->stmt_id, $c);
+			$F->max_length		= oci_field_size($this->stmt_id, $c);
 
 			$retval[] = $F;
 		}
@@ -129,11 +130,11 @@ class CI_DB_oci8_result extends CI_DB_result {
 	 *
 	 * @return	null
 	 */
-	function free_result()
+	public function free_result()
 	{
 		if (is_resource($this->result_id))
 		{
-			ocifreestatement($this->result_id);
+			oci_free_statement($this->result_id);
 			$this->result_id = FALSE;
 		}
 	}
@@ -145,14 +146,13 @@ class CI_DB_oci8_result extends CI_DB_result {
 	 *
 	 * Returns the result set as an array
 	 *
-	 * @access  private
+	 * @access  protected
 	 * @return  array
 	 */
-	function _fetch_assoc(&$row)
+	protected function _fetch_assoc()
 	{
 		$id = ($this->curs_id) ? $this->curs_id : $this->stmt_id;
-
+		return oci_fetch_assoc($id);
-		return ocifetchinto($id, $row, OCI_ASSOC + OCI_RETURN_NULLS);
 	}
 
 	// --------------------------------------------------------------------
@@ -162,41 +162,13 @@ class CI_DB_oci8_result extends CI_DB_result {
 	 *
 	 * Returns the result set as an object
 	 *
-	 * @access  private
+	 * @access  protected
 	 * @return  object
 	 */
-	function _fetch_object()
+	protected function _fetch_object()
 	{
-		$result = array();
+		$id = ($this->curs_id) ? $this->curs_id : $this->stmt_id;
-
+		return @oci_fetch_object($id);
-		// If PHP 5 is being used we can fetch an result object
-		if (function_exists('oci_fetch_object'))
-		{
-			$id = ($this->curs_id) ? $this->curs_id : $this->stmt_id;
-
-			return @oci_fetch_object($id);
-		}
-
-		// If PHP 4 is being used we have to build our own result
-		foreach ($this->result_array() as $key => $val)
-		{
-			$obj = new stdClass();
-			if (is_array($val))
-			{
-				foreach ($val as $k => $v)
-				{
-					$obj->$k = $v;
-				}
-			}
-			else
-			{
-				$obj->$key = $val;
-			}
-
-			$result[] = $obj;
-		}
-
-		return $result;
 	}
 
 	// --------------------------------------------------------------------
@@ -207,17 +179,15 @@ class CI_DB_oci8_result extends CI_DB_result {
 	 * @access  public
 	 * @return  array
 	 */
-	function result_array()
+	public function result_array()
 	{
 		if (count($this->result_array) > 0)
 		{
 			return $this->result_array;
 		}
 
-		// oracle's fetch functions do not return arrays.
-		// The information is returned in reference parameters
 		$row = NULL;
-		while ($this->_fetch_assoc($row))
+		while ($row = $this->_fetch_assoc())
 		{
 			$this->result_array[] = $row;
 		}
@@ -234,10 +204,10 @@ class CI_DB_oci8_result extends CI_DB_result {
 	 * this internally before fetching results to make sure the
 	 * result set starts at zero
 	 *
-	 * @access	private
+	 * @access	protected
 	 * @return	array
 	 */
-	function _data_seek($n = 0)
+	protected function _data_seek($n = 0)
 	{
 		return FALSE; // Not needed
 	}

system/database/drivers/odbc/odbc_driver.php

@@ -48,9 +48,9 @@ class CI_DB_odbc_driver extends CI_DB {
 	var $_random_keyword;
 
 
-	function CI_DB_odbc_driver($params)
+	function __construct($params)
 	{
-		parent::CI_DB($params);
+		parent::__construct($params);
 
 		$this->_random_keyword = ' RND('.time().')'; // database specific random keyword
 	}
@@ -339,6 +339,7 @@ class CI_DB_odbc_driver extends CI_DB {
 		}
 
 		$row = $query->row();
+		$this->_reset_select();
 		return (int) $row->numrows;
 	}
 

system/database/drivers/pdo/index.html

@@ -0,0 +1,10 @@
+<html>
+<head>
+	<title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html>

system/database/drivers/pdo/pdo_driver.php

@@ -0,0 +1,803 @@
+<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.1.6 or newer
+ *
+ * @package		CodeIgniter
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
+ * @license		http://codeigniter.com/user_guide/license.html
+ * @author		EllisLab Dev Team
+ * @link		http://codeigniter.com
+ * @since		Version 2.1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * PDO Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the active record
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		http://codeigniter.com/user_guide/database/
+ */
+class CI_DB_pdo_driver extends CI_DB {
+
+	var $dbdriver = 'pdo';
+
+	// the character used to excape - not necessary for PDO
+	var $_escape_char = '';
+	var $_like_escape_str;
+	var $_like_escape_chr;
+	
+
+	/**
+	 * The syntax to count rows is slightly different across different
+	 * database engines, so this string appears in each driver and is
+	 * used for the count_all() and count_all_results() functions.
+	 */
+	var $_count_string = "SELECT COUNT(*) AS ";
+	var $_random_keyword;
+	
+	var $options = array();
+
+	function __construct($params)
+	{
+		parent::__construct($params);
+		
+		// clause and character used for LIKE escape sequences
+		if (strpos($this->hostname, 'mysql') !== FALSE)
+		{
+			$this->_like_escape_str = '';
+			$this->_like_escape_chr = '';
+			
+			//Prior to this version, the charset can't be set in the dsn
+			if(is_php('5.3.6'))
+			{
+				$this->hostname .= ";charset={$this->char_set}";
+			}
+			
+			//Set the charset with the connection options
+			$this->options['PDO::MYSQL_ATTR_INIT_COMMAND'] = "SET NAMES {$this->char_set}";
+		}
+		else if (strpos($this->hostname, 'odbc') !== FALSE)
+		{
+			$this->_like_escape_str = " {escape '%s'} ";
+			$this->_like_escape_chr = '!';
+		}
+		else
+		{
+			$this->_like_escape_str = " ESCAPE '%s' ";
+			$this->_like_escape_chr = '!';
+		}
+		
+		$this->hostname .= ";dbname=".$this->database;
+		
+		$this->trans_enabled = FALSE;
+
+		$this->_random_keyword = ' RND('.time().')'; // database specific random keyword
+	}
+
+	/**
+	 * Non-persistent database connection
+	 *
+	 * @access	private called by the base class
+	 * @return	resource
+	 */
+	function db_connect()
+	{
+		$this->options['PDO::ATTR_ERRMODE'] = PDO::ERRMODE_SILENT;
+		
+		return new PDO($this->hostname, $this->username, $this->password, $this->options);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Persistent database connection
+	 *
+	 * @access	private called by the base class
+	 * @return	resource
+	 */
+	function db_pconnect()
+	{
+		$this->options['PDO::ATTR_ERRMODE'] = PDO::ERRMODE_SILENT;
+		$this->options['PDO::ATTR_PERSISTENT'] = TRUE;
+	
+		return new PDO($this->hostname, $this->username, $this->password, $this->options);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Reconnect
+	 *
+	 * Keep / reestablish the db connection if no queries have been
+	 * sent for a length of time exceeding the server's idle timeout
+	 *
+	 * @access	public
+	 * @return	void
+	 */
+	function reconnect()
+	{
+		if ($this->db->db_debug)
+		{
+			return $this->db->display_error('db_unsuported_feature');
+		}
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select the database
+	 *
+	 * @access	private called by the base class
+	 * @return	resource
+	 */
+	function db_select()
+	{
+		// Not needed for PDO
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set client character set
+	 *
+	 * @access	public
+	 * @param	string
+	 * @param	string
+	 * @return	resource
+	 */
+	function db_set_charset($charset, $collation)
+	{
+		// @todo - add support if needed
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Version number query string
+	 *
+	 * @access	public
+	 * @return	string
+	 */
+	function _version()
+	{
+		return $this->conn_id->getAttribute(PDO::ATTR_CLIENT_VERSION);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @access	private called by the base class
+	 * @param	string	an SQL query
+	 * @return	object
+	 */
+	function _execute($sql)
+	{
+		$sql = $this->_prep_query($sql);
+		$result_id = $this->conn_id->query($sql);
+		
+		if (is_object($result_id))
+		{
+			$this->affect_rows = $result_id->rowCount();
+		}
+		else
+		{
+			$this->affect_rows = 0;
+		}
+		
+		return $result_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prep the query
+	 *
+	 * If needed, each database adapter can prep the query string
+	 *
+	 * @access	private called by execute()
+	 * @param	string	an SQL query
+	 * @return	string
+	 */
+	function _prep_query($sql)
+	{
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @access	public
+	 * @return	bool
+	 */
+	function trans_begin($test_mode = FALSE)
+	{
+		if ( ! $this->trans_enabled)
+		{
+			return TRUE;
+		}
+
+		// When transactions are nested we only begin/commit/rollback the outermost ones
+		if ($this->_trans_depth > 0)
+		{
+			return TRUE;
+		}
+
+		// Reset the transaction failure flag.
+		// If the $test_mode flag is set to TRUE transactions will be rolled back
+		// even if the queries produce a successful result.
+		$this->_trans_failure = (bool) ($test_mode === TRUE);
+
+		return $this->conn_id->beginTransaction();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @access	public
+	 * @return	bool
+	 */
+	function trans_commit()
+	{
+		if ( ! $this->trans_enabled)
+		{
+			return TRUE;
+		}
+
+		// When transactions are nested we only begin/commit/rollback the outermost ones
+		if ($this->_trans_depth > 0)
+		{
+			return TRUE;
+		}
+
+		$ret = $this->conn->commit();
+		return $ret;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @access	public
+	 * @return	bool
+	 */
+	function trans_rollback()
+	{
+		if ( ! $this->trans_enabled)
+		{
+			return TRUE;
+		}
+
+		// When transactions are nested we only begin/commit/rollback the outermost ones
+		if ($this->_trans_depth > 0)
+		{
+			return TRUE;
+		}
+
+		$ret = $this->conn_id->rollBack();
+		return $ret;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Escape String
+	 *
+	 * @access	public
+	 * @param	string
+	 * @param	bool	whether or not the string will be used in a LIKE condition
+	 * @return	string
+	 */
+	function escape_str($str, $like = FALSE)
+	{
+		if (is_array($str))
+		{
+			foreach ($str as $key => $val)
+			{
+				$str[$key] = $this->escape_str($val, $like);
+			}
+
+			return $str;
+		}
+		
+		//Escape the string
+		$str = $this->conn_id->quote($str);
+		
+		//If there are duplicated quotes, trim them away
+		if (strpos($str, "'") === 0)
+		{
+			$str = substr($str, 1, -1);
+		}
+		
+		// escape LIKE condition wildcards
+		if ($like === TRUE)
+		{
+			$str = str_replace(	array('%', '_', $this->_like_escape_chr),
+								array($this->_like_escape_chr.'%', $this->_like_escape_chr.'_', $this->_like_escape_chr.$this->_like_escape_chr),
+								$str);
+		}
+
+		return $str;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @access	public
+	 * @return	integer
+	 */
+	function affected_rows()
+	{
+		return $this->affect_rows;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 * 
+	 * @access	public
+	 * @return	integer
+	 */
+	function insert_id($name=NULL)
+	{
+		//Convenience method for postgres insertid
+		if (strpos($this->hostname, 'pgsql') !== FALSE)
+		{
+			$v = $this->_version();
+
+			$table	= func_num_args() > 0 ? func_get_arg(0) : NULL;
+
+			if ($table == NULL && $v >= '8.1')
+			{
+				$sql='SELECT LASTVAL() as ins_id';
+			}
+			$query = $this->query($sql);
+			$row = $query->row();
+			return $row->ins_id;
+		}
+		else
+		{
+			return $this->conn_id->lastInsertId($name);
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * "Count All" query
+	 *
+	 * Generates a platform-specific query string that counts all records in
+	 * the specified database
+	 *
+	 * @access	public
+	 * @param	string
+	 * @return	string
+	 */
+	function count_all($table = '')
+	{
+		if ($table == '')
+		{
+			return 0;
+		}
+
+		$query = $this->query($this->_count_string . $this->_protect_identifiers('numrows') . " FROM " . $this->_protect_identifiers($table, TRUE, NULL, FALSE));
+
+		if ($query->num_rows() == 0)
+		{
+			return 0;
+		}
+
+		$row = $query->row();
+		$this->_reset_select();
+		return (int) $row->numrows;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @access	private
+	 * @param	boolean
+	 * @return	string
+	 */
+	function _list_tables($prefix_limit = FALSE)
+	{
+		$sql = "SHOW TABLES FROM `".$this->database."`";
+
+		if ($prefix_limit !== FALSE AND $this->dbprefix != '')
+		{
+			//$sql .= " LIKE '".$this->escape_like_str($this->dbprefix)."%' ".sprintf($this->_like_escape_str, $this->_like_escape_chr);
+			return FALSE; // not currently supported
+		}
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @return	string
+	 */
+	function _list_columns($table = '')
+	{
+		return "SHOW COLUMNS FROM ".$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data query
+	 *
+	 * Generates a platform-specific query so that the column data can be retrieved
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @return	object
+	 */
+	function _field_data($table)
+	{
+		return "SELECT TOP 1 FROM ".$table;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * The error message string
+	 *
+	 * @access	private
+	 * @return	string
+	 */
+	function _error_message()
+	{
+		$error_array = $this->conn_id->errorInfo();
+		return $error_array[2];
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * The error message number
+	 *
+	 * @access	private
+	 * @return	integer
+	 */
+	function _error_number()
+	{
+		return $this->conn_id->errorCode();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Escape the SQL Identifiers
+	 *
+	 * This function escapes column and table names
+	 *
+	 * @access	private
+	 * @param	string
+	 * @return	string
+	 */
+	function _escape_identifiers($item)
+	{
+		if ($this->_escape_char == '')
+		{
+			return $item;
+		}
+
+		foreach ($this->_reserved_identifiers as $id)
+		{
+			if (strpos($item, '.'.$id) !== FALSE)
+			{
+				$str = $this->_escape_char. str_replace('.', $this->_escape_char.'.', $item);
+
+				// remove duplicates if the user already included the escape
+				return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str);
+			}
+		}
+
+		if (strpos($item, '.') !== FALSE)
+		{
+			$str = $this->_escape_char.str_replace('.', $this->_escape_char.'.'.$this->_escape_char, $item).$this->_escape_char;
+			
+		}
+		else
+		{
+			$str = $this->_escape_char.$item.$this->_escape_char;
+		}
+
+		// remove duplicates if the user already included the escape
+		return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * From Tables
+	 *
+	 * This function implicitly groups FROM tables so there is no confusion
+	 * about operator precedence in harmony with SQL standards
+	 *
+	 * @access	public
+	 * @param	type
+	 * @return	type
+	 */
+	function _from_tables($tables)
+	{
+		if ( ! is_array($tables))
+		{
+			$tables = array($tables);
+		}
+
+		return (count($tables) == 1) ? $tables[0] : '('.implode(', ', $tables).')';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @param	array	the insert keys
+	 * @param	array	the insert values
+	 * @return	string
+	 */
+	function _insert($table, $keys, $values)
+	{
+		return "INSERT INTO ".$table." (".implode(', ', $keys).") VALUES (".implode(', ', $values).")";
+	}
+	
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert_batch statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data
+	 *
+	 * @access  public
+	 * @param   string  the table name
+	 * @param   array   the insert keys
+	 * @param   array   the insert values
+	 * @return  string
+	 */
+	function _insert_batch($table, $keys, $values)
+	{
+		return "INSERT INTO ".$table." (".implode(', ', $keys).") VALUES ".implode(', ', $values);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @param	array	the update data
+	 * @param	array	the where clause
+	 * @param	array	the orderby clause
+	 * @param	array	the limit clause
+	 * @return	string
+	 */
+	function _update($table, $values, $where, $orderby = array(), $limit = FALSE)
+	{
+		foreach ($values as $key => $val)
+		{
+			$valstr[] = $key." = ".$val;
+		}
+
+		$limit = ( ! $limit) ? '' : ' LIMIT '.$limit;
+
+		$orderby = (count($orderby) >= 1)?' ORDER BY '.implode(", ", $orderby):'';
+
+		$sql = "UPDATE ".$table." SET ".implode(', ', $valstr);
+
+		$sql .= ($where != '' AND count($where) >=1) ? " WHERE ".implode(" ", $where) : '';
+
+		$sql .= $orderby.$limit;
+
+		return $sql;
+	}
+	
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update_Batch statement
+	 *
+	 * Generates a platform-specific batch update string from the supplied data
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @param	array	the update data
+	 * @param	array	the where clause
+	 * @return	string
+	 */
+	function _update_batch($table, $values, $index, $where = NULL)
+	{
+		$ids = array();
+		$where = ($where != '' AND count($where) >=1) ? implode(" ", $where).' AND ' : '';
+
+		foreach ($values as $key => $val)
+		{
+			$ids[] = $val[$index];
+
+			foreach (array_keys($val) as $field)
+			{
+				if ($field != $index)
+				{
+					$final[$field][] =  'WHEN '.$index.' = '.$val[$index].' THEN '.$val[$field];
+				}
+			}
+		}
+
+		$sql = "UPDATE ".$table." SET ";
+		$cases = '';
+
+		foreach ($final as $k => $v)
+		{
+			$cases .= $k.' = CASE '."\n";
+			foreach ($v as $row)
+			{
+				$cases .= $row."\n";
+			}
+
+			$cases .= 'ELSE '.$k.' END, ';
+		}
+
+		$sql .= substr($cases, 0, -2);
+
+		$sql .= ' WHERE '.$where.$index.' IN ('.implode(',', $ids).')';
+
+		return $sql;
+	}
+
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 * If the database does not support the truncate() command
+	 * This function maps to "DELETE FROM table"
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @return	string
+	 */
+	function _truncate($table)
+	{
+		return $this->_delete($table);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @param	array	the where clause
+	 * @param	string	the limit clause
+	 * @return	string
+	 */
+	function _delete($table, $where = array(), $like = array(), $limit = FALSE)
+	{
+		$conditions = '';
+
+		if (count($where) > 0 OR count($like) > 0)
+		{
+			$conditions = "\nWHERE ";
+			$conditions .= implode("\n", $this->ar_where);
+
+			if (count($where) > 0 && count($like) > 0)
+			{
+				$conditions .= " AND ";
+			}
+			$conditions .= implode("\n", $like);
+		}
+
+		$limit = ( ! $limit) ? '' : ' LIMIT '.$limit;
+
+		return "DELETE FROM ".$table.$conditions.$limit;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Limit string
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @access	public
+	 * @param	string	the sql query string
+	 * @param	integer	the number of rows to limit the query to
+	 * @param	integer	the offset value
+	 * @return	string
+	 */
+	function _limit($sql, $limit, $offset)
+	{
+		if (strpos($this->hostname, 'cubrid') !== FALSE || strpos($this->hostname, 'sqlite') !== FALSE)
+		{
+			if ($offset == 0)
+			{
+				$offset = '';
+			}
+			else
+			{
+				$offset .= ", ";
+			}
+
+			return $sql."LIMIT ".$offset.$limit;
+		}
+		else
+		{
+			$sql .= "LIMIT ".$limit;
+
+			if ($offset > 0)
+			{
+				$sql .= " OFFSET ".$offset;
+			}
+			
+			return $sql;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @access	public
+	 * @param	resource
+	 * @return	void
+	 */
+	function _close($conn_id)
+	{
+		$this->conn_id = null;
+	}
+
+
+}
+
+
+
+/* End of file pdo_driver.php */
+/* Location: ./system/database/drivers/pdo/pdo_driver.php */

system/database/drivers/pdo/pdo_forge.php

@@ -0,0 +1,266 @@
+<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.1.6 or newer
+ *
+ * @package		CodeIgniter
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
+ * @license		http://codeigniter.com/user_guide/license.html
+ * @author		EllisLab Dev Team
+ * @link		http://codeigniter.com
+ * @since		Version 2.1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * PDO Forge Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		http://codeigniter.com/database/
+ */
+class CI_DB_pdo_forge extends CI_DB_forge {
+
+	/**
+	 * Create database
+	 *
+	 * @access	private
+	 * @param	string	the database name
+	 * @return	bool
+	 */
+	function _create_database()
+	{
+		// PDO has no "create database" command since it's
+		// designed to connect to an existing database
+		if ($this->db->db_debug)
+		{
+			return $this->db->display_error('db_unsuported_feature');
+		}
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Drop database
+	 *
+	 * @access	private
+	 * @param	string	the database name
+	 * @return	bool
+	 */
+	function _drop_database($name)
+	{
+		// PDO has no "drop database" command since it's
+		// designed to connect to an existing database
+		if ($this->db->db_debug)
+		{
+			return $this->db->display_error('db_unsuported_feature');
+		}
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Create Table
+	 *
+	 * @access	private
+	 * @param	string	the table name
+	 * @param	array	the fields
+	 * @param	mixed	primary key(s)
+	 * @param	mixed	key(s)
+	 * @param	boolean	should 'IF NOT EXISTS' be added to the SQL
+	 * @return	bool
+	 */
+	function _create_table($table, $fields, $primary_keys, $keys, $if_not_exists)
+	{
+		$sql = 'CREATE TABLE ';
+
+		if ($if_not_exists === TRUE)
+		{
+			$sql .= 'IF NOT EXISTS ';
+		}
+
+		$sql .= $this->db->_escape_identifiers($table)." (";
+		$current_field_count = 0;
+
+		foreach ($fields as $field=>$attributes)
+		{
+			// Numeric field names aren't allowed in databases, so if the key is
+			// numeric, we know it was assigned by PHP and the developer manually
+			// entered the field information, so we'll simply add it to the list
+			if (is_numeric($field))
+			{
+				$sql .= "\n\t$attributes";
+			}
+			else
+			{
+				$attributes = array_change_key_case($attributes, CASE_UPPER);
+
+				$sql .= "\n\t".$this->db->_protect_identifiers($field);
+
+				$sql .=  ' '.$attributes['TYPE'];
+
+				if (array_key_exists('CONSTRAINT', $attributes))
+				{
+					$sql .= '('.$attributes['CONSTRAINT'].')';
+				}
+
+				if (array_key_exists('UNSIGNED', $attributes) && $attributes['UNSIGNED'] === TRUE)
+				{
+					$sql .= ' UNSIGNED';
+				}
+
+				if (array_key_exists('DEFAULT', $attributes))
+				{
+					$sql .= ' DEFAULT \''.$attributes['DEFAULT'].'\'';
+				}
+
+				if (array_key_exists('NULL', $attributes) && $attributes['NULL'] === TRUE)
+				{
+					$sql .= ' NULL';
+				}
+				else
+				{
+					$sql .= ' NOT NULL';
+				}
+
+				if (array_key_exists('AUTO_INCREMENT', $attributes) && $attributes['AUTO_INCREMENT'] === TRUE)
+				{
+					$sql .= ' AUTO_INCREMENT';
+				}
+			}
+
+			// don't add a comma on the end of the last field
+			if (++$current_field_count < count($fields))
+			{
+				$sql .= ',';
+			}
+		}
+
+		if (count($primary_keys) > 0)
+		{
+			$primary_keys = $this->db->_protect_identifiers($primary_keys);
+			$sql .= ",\n\tPRIMARY KEY (" . implode(', ', $primary_keys) . ")";
+		}
+
+		if (is_array($keys) && count($keys) > 0)
+		{
+			foreach ($keys as $key)
+			{
+				if (is_array($key))
+				{
+					$key = $this->db->_protect_identifiers($key);
+				}
+				else
+				{
+					$key = array($this->db->_protect_identifiers($key));
+				}
+
+				$sql .= ",\n\tFOREIGN KEY (" . implode(', ', $key) . ")";
+			}
+		}
+
+		$sql .= "\n)";
+
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Drop Table
+	 *
+	 * @access	private
+	 * @return	bool
+	 */
+	function _drop_table($table)
+	{
+		// Not a supported PDO feature
+		if ($this->db->db_debug)
+		{
+			return $this->db->display_error('db_unsuported_feature');
+		}
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Alter table query
+	 *
+	 * Generates a platform-specific query so that a table can be altered
+	 * Called by add_column(), drop_column(), and column_alter(),
+	 *
+	 * @access	private
+	 * @param	string	the ALTER type (ADD, DROP, CHANGE)
+	 * @param	string	the column name
+	 * @param	string	the table name
+	 * @param	string	the column definition
+	 * @param	string	the default value
+	 * @param	boolean	should 'NOT NULL' be added
+	 * @param	string	the field after which we should add the new field
+	 * @return	object
+	 */
+	function _alter_table($alter_type, $table, $column_name, $column_definition = '', $default_value = '', $null = '', $after_field = '')
+	{
+		$sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table)." $alter_type ".$this->db->_protect_identifiers($column_name);
+
+		// DROP has everything it needs now.
+		if ($alter_type == 'DROP')
+		{
+			return $sql;
+		}
+
+		$sql .= " $column_definition";
+
+		if ($default_value != '')
+		{
+			$sql .= " DEFAULT \"$default_value\"";
+		}
+
+		if ($null === NULL)
+		{
+			$sql .= ' NULL';
+		}
+		else
+		{
+			$sql .= ' NOT NULL';
+		}
+
+		if ($after_field != '')
+		{
+			$sql .= ' AFTER ' . $this->db->_protect_identifiers($after_field);
+		}
+
+		return $sql;
+
+	}
+
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rename a table
+	 *
+	 * Generates a platform-specific query so that a table can be renamed
+	 *
+	 * @access	private
+	 * @param	string	the old table name
+	 * @param	string	the new table name
+	 * @return	string
+	 */
+	function _rename_table($table_name, $new_table_name)
+	{
+		$sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table_name)." RENAME TO ".$this->db->_protect_identifiers($new_table_name);
+		return $sql;
+	}
+
+
+}
+
+/* End of file pdo_forge.php */
+/* Location: ./system/database/drivers/pdo/pdo_forge.php */

system/database/drivers/pdo/pdo_result.php

@@ -0,0 +1,171 @@
+<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.1.6 or newer
+ *
+ * @package		CodeIgniter
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
+ * @license		http://codeigniter.com/user_guide/license.html
+ * @author		EllisLab Dev Team
+ * @link		http://codeigniter.com
+ * @since		Version 2.1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * PDO Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		http://codeigniter.com/user_guide/database/
+ */
+class CI_DB_pdo_result extends CI_DB_result {
+
+	/**
+	 * Number of rows in the result set
+	 *
+	 * @access	public
+	 * @return	integer
+	 */
+	function num_rows()
+	{
+		return $this->result_id->rowCount();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Number of fields in the result set
+	 *
+	 * @access	public
+	 * @return	integer
+	 */
+	function num_fields()
+	{
+		return $this->result_id->columnCount();
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Fetch Field Names
+	 *
+	 * Generates an array of column names
+	 *
+	 * @access	public
+	 * @return	array
+	 */
+	function list_fields()
+	{
+		if ($this->db->db_debug)
+		{
+			return $this->db->display_error('db_unsuported_feature');
+		}
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data
+	 *
+	 * Generates an array of objects containing field meta-data
+	 *
+	 * @access	public
+	 * @return	array
+	 */
+	function field_data()
+	{
+		$data = array();
+	
+		try
+		{
+			for($i = 0; $i < $this->num_fields(); $i++)
+			{
+				$data[] = $this->result_id->getColumnMeta($i);
+			}
+			
+			return $data;
+		}
+		catch (Exception $e)
+		{
+			if ($this->db->db_debug)
+			{
+				return $this->db->display_error('db_unsuported_feature');
+			}
+			return FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Free the result
+	 *
+	 * @return	null
+	 */
+	function free_result()
+	{
+		if (is_object($this->result_id))
+		{
+			$this->result_id = FALSE;
+		}
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Data Seek
+	 *
+	 * Moves the internal pointer to the desired offset.  We call
+	 * this internally before fetching results to make sure the
+	 * result set starts at zero
+	 *
+	 * @access	private
+	 * @return	array
+	 */
+	function _data_seek($n = 0)
+	{
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - associative array
+	 *
+	 * Returns the result set as an array
+	 *
+	 * @access	private
+	 * @return	array
+	 */
+	function _fetch_assoc()
+	{
+		return $this->result_id->fetch(PDO::FETCH_ASSOC);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Result - object
+	 *
+	 * Returns the result set as an object
+	 *
+	 * @access	private
+	 * @return	object
+	 */
+	function _fetch_object()
+	{	
+		return $this->result_id->fetchObject();
+	}
+
+}
+
+
+/* End of file pdo_result.php */
+/* Location: ./system/database/drivers/pdo/pdo_result.php */

system/database/drivers/pdo/pdo_utility.php

@@ -0,0 +1,103 @@
+<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.1.6 or newer
+ *
+ * @package		CodeIgniter
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
+ * @license		http://codeigniter.com/user_guide/license.html
+ * @author		EllisLab Dev Team
+ * @link		http://codeigniter.com
+ * @since		Version 2.1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * PDO Utility Class
+ *
+ * @category	Database
+ * @author		EllisLab Dev Team
+ * @link		http://codeigniter.com/database/
+ */
+class CI_DB_pdo_utility extends CI_DB_utility {
+
+	/**
+	 * List databases
+	 *
+	 * @access	private
+	 * @return	bool
+	 */
+	function _list_databases()
+	{
+		// Not sure if PDO lets you list all databases...
+		if ($this->db->db_debug)
+		{
+			return $this->db->display_error('db_unsuported_feature');
+		}
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Optimize table query
+	 *
+	 * Generates a platform-specific query so that a table can be optimized
+	 *
+	 * @access	private
+	 * @param	string	the table name
+	 * @return	object
+	 */
+	function _optimize_table($table)
+	{
+		// Not a supported PDO feature
+		if ($this->db->db_debug)
+		{
+			return $this->db->display_error('db_unsuported_feature');
+		}
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Repair table query
+	 *
+	 * Generates a platform-specific query so that a table can be repaired
+	 *
+	 * @access	private
+	 * @param	string	the table name
+	 * @return	object
+	 */
+	function _repair_table($table)
+	{
+		// Not a supported PDO feature
+		if ($this->db->db_debug)
+		{
+			return $this->db->display_error('db_unsuported_feature');
+		}
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * PDO Export
+	 *
+	 * @access	private
+	 * @param	array	Preferences
+	 * @return	mixed
+	 */
+	function _backup($params = array())
+	{
+		// Currently unsupported
+		return $this->db->display_error('db_unsuported_feature');
+	}
+
+}
+
+/* End of file pdo_utility.php */
+/* Location: ./system/database/drivers/pdo/pdo_utility.php */

system/database/drivers/postgre/postgre_driver.php

@@ -385,6 +385,7 @@ class CI_DB_postgre_driver extends CI_DB {
 		}
 
 		$row = $query->row();
+		$this->_reset_select();
 		return (int) $row->numrows;
 	}
 

system/database/drivers/sqlite/sqlite_driver.php

@@ -354,6 +354,7 @@ class CI_DB_sqlite_driver extends CI_DB {
 		}
 
 		$row = $query->row();
+		$this->_reset_select();
 		return (int) $row->numrows;
 	}
 

system/database/drivers/sqlsrv/sqlsrv_driver.php

@@ -344,6 +344,7 @@ class CI_DB_sqlsrv_driver extends CI_DB {
 			return '0';
 
 		$row = $query->row();
+		$this->_reset_select();
 		return $row->numrows;
 	}
 

system/helpers/date_helper.php

@@ -116,7 +116,7 @@ if ( ! function_exists('standard_date'))
 						'DATE_COOKIE'	=>	'%l, %d-%M-%y %H:%i:%s UTC',
 						'DATE_ISO8601'	=>	'%Y-%m-%dT%H:%i:%s%Q',
 						'DATE_RFC822'	=>	'%D, %d %M %y %H:%i:%s %O',
-						'DATE_RFC850'	=>	'%l, %d-%M-%y %H:%m:%i UTC',
+						'DATE_RFC850'	=>	'%l, %d-%M-%y %H:%i:%s UTC',
 						'DATE_RFC1036'	=>	'%D, %d %M %y %H:%i:%s %O',
 						'DATE_RFC1123'	=>	'%D, %d %M %Y %H:%i:%s %O',
 						'DATE_RSS'		=>	'%D, %d %M %Y %H:%i:%s %O',

system/helpers/form_helper.php

@@ -64,8 +64,8 @@ if ( ! function_exists('form_open'))
 
 		$form .= '>';
 
-		// CSRF
+		// Add CSRF field if enabled, but leave it out for GET requests and requests to external websites	
-		if ($CI->config->item('csrf_protection') === TRUE)
+		if ($CI->config->item('csrf_protection') === TRUE AND ! (strpos($action, $CI->config->site_url()) === FALSE OR strpos($form, 'method="get"')))	
 		{
 			$hidden[$CI->security->get_csrf_token_name()] = $CI->security->get_csrf_hash();
 		}
@@ -94,7 +94,7 @@ if ( ! function_exists('form_open'))
  */
 if ( ! function_exists('form_open_multipart'))
 {
-	function form_open_multipart($action, $attributes = array(), $hidden = array())
+	function form_open_multipart($action = '', $attributes = array(), $hidden = array())
 	{
 		if (is_string($attributes))
 		{
@@ -249,7 +249,7 @@ if ( ! function_exists('form_textarea'))
 {
 	function form_textarea($data = '', $value = '', $extra = '')
 	{
-		$defaults = array('name' => (( ! is_array($data)) ? $data : ''), 'cols' => '90', 'rows' => '12');
+		$defaults = array('name' => (( ! is_array($data)) ? $data : ''), 'cols' => '40', 'rows' => '10');
 
 		if ( ! is_array($data) OR ! isset($data['value']))
 		{

system/helpers/string_helper.php

@@ -242,6 +242,23 @@ if ( ! function_exists('random_string'))
 
 // ------------------------------------------------------------------------
 
+/**
+ * Add's _1 to a string or increment the ending number to allow _2, _3, etc
+ *
+ * @param   string  $str  required
+ * @param   string  $separator  What should the duplicate number be appended with
+ * @param   string  $first  Which number should be used for the first dupe increment
+ * @return  string
+ */
+function increment_string($str, $separator = '_', $first = 1)
+{
+	preg_match('/(.+)'.$separator.'([0-9]+)$/', $str, $match);
+
+	return isset($match[2]) ? $match[1].$separator.($match[2] + 1) : $str.$separator.$first;
+}
+
+// ------------------------------------------------------------------------
+
 /**
  * Alternator
  *