Singleton Class wrapper for $wpdb
<?php
class DB
{
/**
* Returns the *Singleton* instance of this class.
*
* @staticvar Singleton $instance The *Singleton* instances of this class.
*
* @return Singleton The *Singleton* instance.
*/
public static function get_instance()
{
static $instance = null;
if ( NULL === $instance)
{
global $wpdb;
$instance = &$wpdb;
}
return $instance;
}
/**
* Protected constructor to prevent creating a new instance of the
* *Singleton* via the `new` operator from outside of this class.
*/
protected function __construct() { }
/**
* Private clone method to prevent cloning of the instance of the
* *Singleton* instance.
*
* @return void
*/
private function __clone() { }
/**
* Private unserialize method to prevent unserializing of the *Singleton*
* instance.
*
* @return void
*/
private function __wakeup() { }
}