/** Use instead of constructor to get instance of class.
*
* @param array $conf Connection information.
* @return object Instance of db_handling.
*/
public static function get_instance($db_host = null, $db_user = null, $db_pass = null, $db = null)
{
if (self::$instance === null) {
self::$instance = new db_handling($db_host, $db_user, $db_pass, $db);
}
return self::$instance;
}
public function __construct()
{
$this->db_handling = db_handling::get_instance(DB_HOST, DB_USER, DB_PASS, DB);
}