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+<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * Code Igniter
+ *
+ * An open source application development framework for PHP 4.3.2 or newer
+ *
+ * @package CodeIgniter
+ * @author Rick Ellis
+ * @copyright Copyright (c) 2006, pMachine, Inc.
+ * @license http://www.codeignitor.com/user_guide/license.html
+ * @link http://www.codeigniter.com
+ * @since Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * Initialize the database
+ *
+ * @category Database
+ * @author Rick Ellis
+ * @link http://www.codeigniter.com/user_guide/database/
+ */
+function DB($params = '', $return = FALSE, $active_record = FALSE)
+{
+ $obj =& get_instance();
+
+ // Do we even need to load the database class?
+ if ($obj->_ci_is_loaded('db') == TRUE AND $return == FALSE AND $active_record == FALSE)
+ {
+ return FALSE;
+ }
+
+ // Load the DB config file if a DSN string wasn't passed
+ if (is_string($params) AND strpos($params, '://') === FALSE)
+ {
+ include(APPPATH.'config/database'.EXT);
+
+ $group = ($params == '') ? $active_group : $params;
+
+ if ( ! isset($db[$group]))
+ {
+ show_error('You have specified an invalid database connection group: '.$group);
+ }
+
+ $params = $db[$group];
+ }
+
+ // No DB specified yet? Beat them senseless...
+ if ( ! isset($params['dbdriver']) OR $params['dbdriver'] == '')
+ {
+ show_error('You have not selected a database type to connect to.');
+ }
+
+ // Load the DB classes. Note: Since the active record class is optional
+ // we need to dynamically create a class that extends proper parent class
+ // based on whether we're using the active record class or not.
+ // Kudos to Paul for discovering this clever use of eval()
+
+ if ($active_record == TRUE)
+ {
+ $params['active_r'] = TRUE;
+ }
+
+ require_once(BASEPATH.'database/DB_driver'.EXT);
+
+ if ( ! isset($params['active_r']) OR $params['active_r'] == TRUE)
+ {
+ require_once(BASEPATH.'database/DB_active_rec'.EXT);
+
+ if ( ! class_exists('CI_DB'))
+ {
+ eval('class CI_DB extends CI_DB_active_record { }');
+ }
+ }
+ else
+ {
+ if ( ! class_exists('CI_DB'))
+ {
+ eval('class CI_DB extends CI_DB_driver { }');
+ }
+ }
+
+ require_once(BASEPATH.'database/drivers/'.$params['dbdriver'].'/'.$params['dbdriver'].'_driver'.EXT);
+
+ // Instantiate the DB adapter
+ $driver = 'CI_DB_'.$params['dbdriver'].'_driver';
+ $DB = new $driver($params);
+
+ if ($return === TRUE)
+ {
+ return $DB;
+ }
+
+ $obj->db =& $DB;
+}
+
+
+?> \ No newline at end of file