I've got an html form which collects user details for signing up for an account (code below). The code submits the user's details to a server database. I now want the user to set up payment details via Paypal. I've got the code for that. I think that that needs to go in a separate page. So the form can direct to that page in its action setting. But, once the user has navigated to that page and paid, how do I send the user's details to the database? They were all in the original page which has now gone.