Paypal - return url

I'm hoping someone has dealt with this before.

I am trying to do this:

Form1 -> paypal -> Form2 (follow up form)

Form2 is suppose to use the invoice id from Form1. Does anyone know if there is a way to transfer the invoice id from form2 -> form2?

And what about using a cookie? I've found using a session isn't working out, and I know I can use a cookie, but I'm a little nervous about security.

there are a field in form1 called "custom",you can pass the invoice id with it,when the payment is done,paypal will send the "custom" back!

Schroder,

There is no secure way to send such data, as all return links will have to put it through $_GET. I would suggest using cookies and use a verification so set the return link in the Paypal form to return.php?verify=j125as7 (And check that it matches the cookie before extracting the other cookie data).

However, please keep in mind that not all browsers accept cookies. What specific issues were you having with using sessions? I don't see a reason why it wouldn't work...

Regards,
Patrick

I ended up just using paypal's IPN method, since that way I can confirm the transaction actually went through.