Why the data in HTML form lost when the user press back button? And I find that this problem only exist if I use session_start() to enable session variable. But I can't disable it because the user information in session useful in every pages -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]