<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * * An open source application development framework for PHP 5.2.4 or newer * * NOTICE OF LICENSE * * Licensed under the Open Software License version 3.0 * * This source file is subject to the Open Software License (OSL 3.0) that is * bundled with this package in the files license.txt / license.rst. It is * also available through the world wide web at this URL: * http://opensource.org/licenses/OSL-3.0 * If you did not receive a copy of the license and are unable to obtain it * through the world wide web, please send an email to * licensing@ellislab.com so we can send you a copy immediately. * * @package CodeIgniter * @author EllisLab Dev Team * @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/) * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 1.0 * @filesource */ /** * Initialize the database * * @category Database * @author EllisLab Dev Team * @link http://codeigniter.com/user_guide/database/ * @param string * @param bool Determines if query builder should be used or not */ function &DB($params = '', $query_builder_override = NULL) { // Load the DB config file if a DSN string wasn't passed if (is_string($params) && strpos($params, '://') === FALSE) { // Is the config file in the environment folder? if (( ! defined('ENVIRONMENT') OR ! file_exists($file_path = APPPATH.'config/'.ENVIRONMENT.'/database.php')) && ! file_exists($file_path = APPPATH.'config/database.php')) { show_error('The configuration file database.php does not exist.'); } include($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: * $dsn = 'driver://username:password@hostname/database'; */ if (($dsn = @parse_url($params)) === FALSE) { show_error('Invalid DB Connection String'); } $params = array( 'dbdriver' => $dsn['scheme'], 'hostname' => isset($dsn['host']) ? rawurldecode($dsn['host']) : '', 'port' => isset($dsn['port']) ? rawurldecode($dsn['port']) : '', 'username' => isset($dsn['user']) ? rawurldecode($dsn['user']) : '', 'password' => isset($dsn['pass']) ? rawurldecode($dsn['pass']) : '', 'database' => isset($dsn['path']) ? rawurldecode(substr($dsn['path'], 1)) : '' ); // were additional config items set? if (isset($dsn['query'])) { parse_str($dsn['query'], $extra); foreach ($extra as $key => $val) { if (is_string($val) && in_array(strtoupper($val), array('TRUE', 'FALSE', 'NULL'))) { $val = var_export($val); } $params[$key] = $val; } } } // No DB specified yet? Beat them senseless... if (empty($params['dbdriver'])) { show_error('You have not selected a database type to connect to.'); } // Load the DB classes. Note: Since the query builder class is optional // we need to dynamically create a class that extends proper parent class // based on whether we're using the query builder class or not. if ($query_builder_override !== NULL) { $query_builder = $query_builder_override; } // Backwards compatibility work-around for keeping the // $active_record config variable working. Should be // removed in v3.1 elseif ( ! isset($query_builder) && isset($active_record)) { $query_builder = $active_record; } require_once(BASEPATH.'database/DB_driver.php'); if ( ! isset($query_builder) OR $query_builder === TRUE) { require_once(BASEPATH.'database/DB_query_builder.php'); if ( ! class_exists('CI_DB')) { class CI_DB extends CI_DB_query_builder { } } } elseif ( ! class_exists('CI_DB')) { class CI_DB extends CI_DB_driver { } } // Load the DB driver $driver_file = BASEPATH.'database/drivers/'.$params['dbdriver'].'/'.$params['dbdriver'].'_driver.php'; if ( ! file_exists($driver_file)) show_error('Invalid DB driver'); require_once($driver_file); // Instantiate the DB adapter $driver = 'CI_DB_'.$params['dbdriver'].'_driver'; $DB = new $driver($params); if ($DB->autoinit === TRUE) { $DB->initialize(); } if ( ! empty($params['stricton'])) { $DB->query('SET SESSION sql_mode="STRICT_ALL_TABLES"'); } return $DB; } /* End of file DB.php */ /* Location: ./system/database/DB.php */