Form Processing

I am trying to get a php script to read the stdin from a form and print a line for each value there. I need to check if someone is going to pay with a credit card. If so, I need to display them a different page. In addition, the script needs to send off an email regardless. I have tried to read the stdin like: $fp = fopen("php://stdin","r"); $contents = fread($fp, 500000); <-- This number is just for testing now... if I echo $contents - it says it's an array - so I try echo $contents[0]; and get nothing. I've also tried $contents = parse_url($QUERY_STRING); and $REQUEST_URI as I saw in the users additions to the manual and on the list archives. What am I doing wrong? Or am I way off on my approach to this? Thanks, Joe