如何以单一顺序添加更多产品

I have a page book_order.php...when i fill details and after submit, all details are saved in a table order_management. What I want is once after submission, I need a popup asking "do u want to add/book more products?" if press yes...that order_id is remembered and next booking must be done on the same order_id...how can i do this....?I have a page book_order.php...when i fill deta