<?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 ExpressionEngine Dev Team * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. * @license http://codeigniter.com/user_guide/license.html * @link http://codeigniter.com * @since Version 1.0 * @filesource */ // ------------------------------------------------------------------------ /** * Initialize the database * * @category Database * @author ExpressionEngine Dev Team * @link http://codeigniter.com/user_guide/database/ */ function &DB($params = '', $active_record_override = NULL) { // Load the DB config file if a DSN string wasn't passed if (is_string($params) AND strpos($params, '://') === FALSE) { $file_path = APPPATH.'config/'.ENVIRONMENT.'/database'.EXT; if ( ! file_exists($file_path)) { log_message('debug', 'Database config for '.ENVIRONMENT.' environment is not found. Trying global config.'); $file_path = APPPATH.'config/database'.EXT; if ( ! file_exists($file_path)) { continue; } } include($file_path); if ( ! isset($db) OR count($db) == 0) { show_error('No database connection settings were found in the database config file.'); } if ($params != '') { $active_group = $params; } if ( ! isset($active_group) OR ! isset($db[$active_group])) { show_error('You have specified an invalid database connection group.'); } $params = $db[$active_group]; } elseif (is_string($params)) { /* parse the URL from the DSN string * Database settings can be passed as discreet * parameters or as a data source name in the first * parameter. DSNs must have this prototype: * $dsn = 'driver://username:password@hostname/database'; */ if (($dns = @parse_url($params)) === FALSE) { show_error('Invalid DB Connection String'); } $params = array( 'dbdriver' => $dns['scheme'], 'hostname' => (isset($dns['host'])) ? rawurldecode($dns['host']) : '', 'username' => (isset($dns['user'])) ? rawurldecode($dns['user']) : '', 'password' => (isset($dns['pass'])) ? rawurldecode($dns['pass']) : '', 'database' => (isset($dns['path'])) ? rawurldecode(substr($dns['path'], 1)) : '' ); // were additional config items set? if (isset($dns['query'])) { parse_str($dns['query'], $extra); foreach($extra as $key => $val) { // booleans please if (strtoupper($val) == "TRUE") { $val = TRUE; } elseif (strtoupper($val) == "FALSE") { $val = FALSE; } $params[$key] = $val; } } } // No DB specified yet? Beat them senseless... if ( ! isset($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_override !== NULL) { $active_record = $active_record_override; } require_once(BASEPATH.'database/DB_driver'.EXT); if ( ! isset($active_record) OR $active_record == TRUE) { require_once(BASEPATH.'database/DB_active_rec'.EXT); if ( ! class_exists('CI_DB')) { eval('class CI_DB extends CI_DB_active_record { }'); } } else { if ( ! class_exists('CI_DB')) { eval('class CI_DB extends CI_DB_driver { }'); } } require_once(BASEPATH.'database/drivers/'.$params['dbdriver'].'/'.$params['dbdriver'].'_driver'.EXT); // Instantiate the DB adapter $driver = 'CI_DB_'.$params['dbdriver'].'_driver'; $DB = new $driver($params); if ($DB->autoinit == TRUE) { $DB->initialize(); } if (isset($params['stricton']) && $params['stricton'] == TRUE) { $DB->query('SET SESSION sql_mode="STRICT_ALL_TABLES"'); } return $DB; } /* End of file DB.php */ /* Location: ./system/database/DB.php */