including POST data with header("location: ")

[hagenaer]

Hello,

I'm building a simple shopping cart to work with PayPal.
I'd like to have the user post his basket to my page, validate the input, then redirect him _with his validated form data_ to PayPal using header("Locatio n:"). I could just have the user submit his form to PayPal, but then I don't have any control over what he submits (tweaking the form is easy). I can include the form data as a search string in the redirect URL but that creates an even easier way to change the form data.

Anyone know if it is possible to include POST form data with a header("locatio n:") redirect? Or another way how I could create the smallest possibility the user can change the submitted data?

Many thanks,
Hagenaer.

P.S. The form is dynamic, eliminating PayPal's encrypted form option.

[pbmods]

You can use the HTTP_Request class to accomplish this. See this thread for more info.

[Motoma]

You will not be able to do this with a header, however a curl call may work for you.