Unset post variables after form submission

Question

Is there a way to do the above? Basically, I don\'t want the form to be submitted again if someone presses refresh after already submitting the form once. In which case the

Answer 1

Use an intermediate page to do the operations and then redirect.

For example:

mypage.php --> the page with the form

dostuff.php --> receives the form data and makes operations, then redirects to any other page.

To do a redirect:
Put this line on the top of "dostuff.php": header("Location: mypage.php");