Submitting a Form (Feedback) in PDF to a PHP File in Server

[dollor]

I am trying to implement a feedback system from a PDF file. I have set all the necessary fields and have added a button for submitting it in HTML format.In the server I have a PHP script running which processes the QUERY tags sent from the PDF as Feed back. So far so good, but after submitting the PDF Form, the PDF is showing an error \[code\]No Input File Page Data http://www.example.com/feedback.php\[/code\] where \[code\]feedback.php\[/code\] is the PHP script. The feedback data is submitted in the Server even though an error is showed in Client.Also note that the PHP Script doesn't return any data.Thanks