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<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
* An open source application development framework for PHP 5.1.6 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) AND strpos($params, '://') === FALSE)
{
// Is the config file in the environment folder?
if (( ! defined('ENVIRONMENT') OR ! file_exists($file_path = APPPATH.'config/'.ENVIRONMENT.'/database.php'))
AND ! 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:
* $dsn = 'driver://username:password@hostname/database';
*/
if (($dns = @parse_url($params)) === FALSE)
{
show_error('Invalid DB Connection String');
}
$params = array(
'dbdriver' => $dns['scheme'],
'hostname' => (isset($dns['host'])) ? rawurldecode($dns['host']) : '',
'port' => (isset($dns['port'])) ? rawurldecode($dns['port']) : '',
'username' => (isset($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 $params['dbdriver'] == '')
{
show_error('You have not selected a database type to connect to.');
}
// Load the DB classes. Note: Since the query builder class is optional
// we need to dynamically create a class that extends proper parent class
// based on whether we're using the query builder class or not.
if ($query_builder_override !== NULL)
{
$query_builder = $query_builder_override;
}
require_once(BASEPATH.'database/DB_driver.php');
if ( ! isset($query_builder) OR $query_builder == TRUE)
{
require_once(BASEPATH.'database/DB_query_builder.php');
if ( ! class_exists('CI_DB'))
{
class CI_DB extends CI_DB_query_builder { }
}
}
elseif ( ! class_exists('CI_DB'))
{
class CI_DB extends CI_DB_driver { }
}
require_once(BASEPATH.'database/drivers/'.$params['dbdriver'].'/'.$params['dbdriver'].'_driver.php');
// 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 */
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