Which PAYPAL method to use ?

Question

Hi, I am working an e-commerce site which will allow pdfs to be downloaded once payment is done. So, user will put them in a cart, click buy using paypal and from there will come back to see download link on a success page. I have implemented PDT. Not sure which is the best option ? Please help. I want to take care of any connection lost scenario too, like user completes payment at PAYPAL and while returning back to our site's success page, connection is lost and for some n days, user couldnt access internet as well.

Answer 1

I would just use the IPN. Keep a record in your database that has all of the order items. e.g. Order and Order Items (in 2 tables)

Then send that primary key across as the "custom" variable.

Then your ipn handler page will validate the payment and then email the customer their digital goods.