用户取消事务时删除临时数据

Question

I have a form on a website that users fill in to subscribe for a service and then a Paypal button for the users to pay for that service. Before sending the users to Paypal's website, I save the info that the user has submitted in temporary table in my database. My question is this:

How would I know what temporary data to delete if the user cancels the transaction by clicking on the Cancel button on Paypal? I have no information about what the user has submitted once I'm on Paypal website.

Thank you

Answer 1

you'll probably want to setup an IPN so you get pinged on a cancellation; in-turn know what to delete in the db.

Here is a link on setting it up

Information on it

Sample Code

1. A Simple road is to use the PayPal notification of cancellation via email for reference of what was cancelled.
2. Run a download history report and view the 'type'column where you'll see subscriptions