Log-off security question

[Anon]

I have a page that uses sessions to make sure a user is logged in. However, I want to make a "log-off" button,so that the user may click it and prevent people who come along later from viewing the contents of the page by simple clicking the "back" button. How would I do this?

thanks in advance
Amitrus

[sayoko]

Use session_destroy() and delete the session_cookie if there is one:
http://www.php.net/manual/en/function.session-destroy.php