redirect using post

hessodreamy

The names here have been changed to protect the innocent. And make it easier to understand.

I have a payment page in domain A, which passes info via a POST to payment handling company B. The format of B's site means that info must come via POST, and must come from domain A.

Now I'm setting up another site on domain C, so I need to send the payment info to domain A, and redirect it (via post) to C.

But I'm having trouble redirecting info using post. How do I do it?

drew010

reposting the data from a to c i think is the easiest. either use [man]curl[/man] or [man]fsockopen[/man] to make your own http post request and reconstruct a post request from the variables in $_POST

hessodreamy

OK I've tried cURL, and this works pretty well, up to a point.
There are a few problems though, one being that execution seems to return to the referring page after the destination page has processed.
An example - The referring code: forward.php

$ch = curl_init();
   curl_setopt($ch, CURLOPT_POST, 1);
   curl_setopt($ch, CURLOPT_HEADER, 0);
   curl_setopt($ch, CURLOPT_URL, "http://www.forwardtodomain.com/destination.php" );
   curl_setopt($ch, CURLOPT_POSTFIELDS, $_POST);
   $result = curl_exec($ch);
   curl_close($ch);
echo "<br>Redirecting page<br>";

and the destination page prints a message: destination.php

echo "<br>Arrived at destination<br>";

The thing is that the destination prints the text from destination.php, and THEN prints the text from forward.php which occured after executing the forward. Furthermore the addressbar shows forward.php as the url. So its as if it's forwarded and come back.

Is this supposed to happen? I'm finding that the payment co (known as 'C') aren't liking the redirection, so thinking that it could be to do with this little quirk.

What options can I change to work around this?

drew010

so you want the user and their post data to go from a to b to c? curl wont redirect them it just acts as a browser and sends the data you tell. you can try to use a location header to pass the user on but the post data wont go along with them the second time. you could try a javascript form submit and that might work but they could have javascript disabled.