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162 lines
4.1 KiB
162 lines
4.1 KiB
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); |
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/** |
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* CodeIgniter |
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* |
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* An open source application development framework for PHP 5.1.6 or newer |
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* |
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* @package CodeIgniter |
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* @author ExpressionEngine Dev Team |
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* @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. |
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* @license http://codeigniter.com/user_guide/license.html |
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* @link http://codeigniter.com |
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* @since Version 1.0 |
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* @filesource |
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*/ |
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// ------------------------------------------------------------------------ |
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/** |
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* Initialize the database |
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* |
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* @category Database |
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* @author ExpressionEngine Dev Team |
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* @link http://codeigniter.com/user_guide/database/ |
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* @param string |
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* @param bool Determines if active record should be used or not |
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*/ |
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function &DB($params = '', $active_record_override = NULL) |
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{ |
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// Load the DB config file if a DSN string wasn't passed |
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if (is_string($params) AND strpos($params, '://') === FALSE) |
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{ |
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// Is the config file in the environment folder? |
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if ( ! defined('ENVIRONMENT') OR ! file_exists($file_path = APPPATH.'config/'.ENVIRONMENT.'/database.php')) |
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{ |
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if ( ! file_exists($file_path = APPPATH.'config/database.php')) |
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{ |
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show_error('The configuration file database.php does not exist.'); |
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} |
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} |
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include($file_path); |
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if ( ! isset($db) OR count($db) == 0) |
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{ |
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show_error('No database connection settings were found in the database config file.'); |
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} |
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if ($params != '') |
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{ |
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$active_group = $params; |
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} |
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if ( ! isset($active_group) OR ! isset($db[$active_group])) |
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{ |
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show_error('You have specified an invalid database connection group.'); |
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} |
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$params = $db[$active_group]; |
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} |
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elseif (is_string($params)) |
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{ |
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/* parse the URL from the DSN string |
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* Database settings can be passed as discreet |
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* parameters or as a data source name in the first |
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* parameter. DSNs must have this prototype: |
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* $dsn = 'driver://username:password@hostname/database'; |
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*/ |
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if (($dns = @parse_url($params)) === FALSE) |
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{ |
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show_error('Invalid DB Connection String'); |
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} |
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$params = array( |
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'dbdriver' => $dns['scheme'], |
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'hostname' => (isset($dns['host'])) ? rawurldecode($dns['host']) : '', |
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'username' => (isset($dns['user'])) ? rawurldecode($dns['user']) : '', |
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'password' => (isset($dns['pass'])) ? rawurldecode($dns['pass']) : '', |
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'database' => (isset($dns['path'])) ? rawurldecode(substr($dns['path'], 1)) : '' |
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); |
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// were additional config items set? |
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if (isset($dns['query'])) |
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{ |
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parse_str($dns['query'], $extra); |
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foreach ($extra as $key => $val) |
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{ |
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// booleans please |
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if (strtoupper($val) == "TRUE") |
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{ |
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$val = TRUE; |
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} |
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elseif (strtoupper($val) == "FALSE") |
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{ |
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$val = FALSE; |
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} |
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$params[$key] = $val; |
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} |
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} |
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} |
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// No DB specified yet? Beat them senseless... |
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if ( ! isset($params['dbdriver']) OR $params['dbdriver'] == '') |
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{ |
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show_error('You have not selected a database type to connect to.'); |
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} |
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// Load the DB classes. Note: Since the active record class is optional |
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// we need to dynamically create a class that extends proper parent class |
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// based on whether we're using the active record class or not. |
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// Kudos to Paul for discovering this clever use of eval() |
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if ($active_record_override !== NULL) |
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{ |
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$active_record = $active_record_override; |
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} |
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require_once(BASEPATH.'database/DB_driver.php'); |
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if ( ! isset($active_record) OR $active_record == TRUE) |
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{ |
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require_once(BASEPATH.'database/DB_active_rec.php'); |
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if ( ! class_exists('CI_DB')) |
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{ |
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eval('class CI_DB extends CI_DB_active_record { }'); |
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} |
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} |
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else |
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{ |
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if ( ! class_exists('CI_DB')) |
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{ |
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eval('class CI_DB extends CI_DB_driver { }'); |
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} |
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} |
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require_once(BASEPATH.'database/drivers/'.$params['dbdriver'].'/'.$params['dbdriver'].'_driver.php'); |
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// Instantiate the DB adapter |
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$driver = 'CI_DB_'.$params['dbdriver'].'_driver'; |
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$DB = new $driver($params); |
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if ($DB->autoinit == TRUE) |
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{ |
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$DB->initialize(); |
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} |
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if (isset($params['stricton']) && $params['stricton'] == TRUE) |
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{ |
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$DB->query('SET SESSION sql_mode="STRICT_ALL_TABLES"'); |
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} |
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return $DB; |
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} |
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/* End of file DB.php */ |
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/* Location: ./system/database/DB.php */ |