$_POST requires repost of data on page reload

[Jmacp]

Is there a way i can avoid having to repost the variables if i use $_POST.

Login.php ---> Form action / POST ---> main.php

this works but when i refresh main.php i cant the 'this page cannot be displayed unless you repost the page ' or something must be as i'm using $_POST to grab the vars.

Its because i use an include in main.php so you could say the main.php is more than one page. On the first time round is a verifier of values then its an actual page and the cookie determines if its displyed or not i need to get rid of the $_POST when it an actual page and let the cookie take over.

[penagate]

After validating the form data redirect to another page or the same page and the post data will be discarded.

Before any output is sent use this to redirect

header('Location: newfile.php');