Hi,
I'm trying to force a page to be re-validated every time someone views it, even when they click the back button. I'm currently using:
header("Expires: " . gmdate("D, d M Y H:i:s", strtotime("-1 year")) . " GMT");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Pragma: no-cache");
However, my pages still seem to display without the server being called when the back button is pressed.
Can anyone suggest the correct headers/code I can use to force the server to be re-called when the back button is pressed?
Debbie