reload page once only

[Anon]

Hi.

I'm working on a project where some users have to log in to a page. Once they have logged in the page changes to a logout page and here is my problem:

I don't want them to be able to hit the 'back' button and thereby see the login page again. I want to use a javafunction that reloads the page and deletes the history:

echo "history.go(0);";

But i don't know how to execute it only the first time the page is reloaded.

Hope you can help me.

/slumhest

[Anon]

I see what you are doing, but I dont think I would do it that way, I would set all pages not to cache:
header("Cache-Control: no-cache, must-revalidate");

header("Pragma: no-cache");

Then I would write some conditional code in the login page so that they dont see it again.

[Anon]

I get your point. But I cant get it to work. I get the following error:

Warning: Cannot add header information - headers already sent by (output started at /var/www/html/login/login.php:4) in /var/www/html/login/login.php on line 5

Warning: Cannot add header information - headers already sent by (output started at /var/www/html/login/login.php:4) in /var/www/html/login/login.php on line 6

Any Ideas?

/Slumhest