Hi all I noticed some sites are able to remove POST data 100% of the time. Even if the user presses the back button there is no more POST data pressent. I would like to achieve the same thing and currently I use a location header to transfer the user to the same page. Like check post do action header('Location: $thispage'); die(); But then when the user presses the back button they can still retransmit the action. I tried playing with the MUST-REVALIDATE, pragma-nocache header and stuff but it doesn't seem to work. Also I notice that on some sites, when I press the back button, there is a white page that sais "Your session has expired". It should be noticed that I do not use sessions. It should be like POST-once, after that there should be no more remnants of it. With kind regards Andy -- Registered Linux User Number 379093 -- ---BEGIN GEEK CODE BLOCK----- Version: 3.12 GAT/O/CM d- s:+ a- C++++ UL++++ P+ L+++ E--- W+++ N++ o+ K w--- O+++ M- V PS+ PE++ Y+ PGP+++ t+ 5-- X R !tv b DI+++ D++ G e-- h+ r--- y+ -- ---END GEEK CODE BLOCK------ Check out these few php utilities that I released under the GPL2 and that are meant for use with a php cli binary: http://www.vlaamse-kern.com/sas/ -- -- -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php