// доставка
        $delivery_summ = 0;
        $delivery_id = 0;

        $one_click_delivery = ($_POST["action"] == "one_click" ? "ваше_значение(id)_доставки" : (! empty($_SESSION["cart_delivery"]) ? $_SESSION["cart_delivery"] : 0));

        if(!empty($one_click_delivery))
        {
            $rows = DB::query_fetch_all("SELECT id FROM {shop_delivery} WHERE [act]='1' AND trash='0'AND id=%d LIMIT 1", $one_click_delivery);
            foreach ($rows as $row)
            {
                $delivery_summ = DB::query_result("SELECT price FROM {shop_delivery_thresholds} WHERE delivery_id=%d AND amount<=%f ORDER BY amount DESC LIMIT 1", $one_click_delivery, $summ);
                $delivery_id = $row["id"];
                $summ += $delivery_summ;
            }
            DB::query("UPDATE {shop_order} SET delivery_summ=%f, delivery_id=%d WHERE id=%d", $delivery_summ, $delivery_id, $order_id);
        }