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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 (class_exists('CI_DB') 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;
}
?>
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