Detecting if $formval_ exists

[Pigmaster]

Hi,

I have a small problem.....

He is an example.

I have a FORM on a page that will POST the form data to a php page.
I have import_request_variables("gp", "formval_"); in this php page to pick up the form data and work with it.
All works fine.

Problem is if someone goes straight to this php page without coming from the htm form page then I get lots of errors as it can not pick up the form data.

I have looked but can not find a simple solution to detect if if $formval_ etc exists.

[mrhappiness]

you have a submit-button called "lets_go" and do method="post"?

if (!isset($_POST['lets_go']))
  die('You did not submit the form!');