| <?php if (!defined('BASEPATH')) exit('No direct script access allowed');
|
| /**
|
| * CodeIgniter
|
| *
|
| * An open source application development framework for PHP 4.3.2 or newer
|
| *
|
| * @package CodeIgniter
|
| * @author ExpressionEngine Dev Team
|
| * @copyright Copyright (c) 2006, 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 = '', $active_record_override = FALSE)
|
| {
|
| // Load the DB config file if a DSN string wasn't passed
|
| if (is_string($params) AND strpos($params, '://') === FALSE)
|
| {
|
| include(APPPATH.'config/database'.EXT);
|
|
|
| if (! isset($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($dns['host'], 1)) : ''
|
| );
|
| }
|
|
|
| // No DB specified yet? Beat them senseless...
|
| if (! isset($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 == TRUE)
|
| {
|
| $active_record = TRUE;
|
| }
|
|
|
| require_once(BASEPATH.'database/DB_driver'.EXT);
|
|
|
| if (! isset($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();
|
| }
|
|
|
| return $DB;
|
| }
|
|
|
|
|
| |
| /* End of file DB.php */ |
| /* Location: ./system/database/DB.php */ |