/** * Return a unique reference like : GWJTHMZUN#2 * * With multi-shipping, order reference are the same for all orders made with the same cart * in this case this method suffix the order reference by a # and the order number * * @param $order_id * @return */ public static function getUniqueReferenceOf($order_id) { $order = new JeproshopOrderModelOrder($id_order); return $order->getUniqueReference(); }