note 19536 added to ref.session

At the end of a session if I want to perform some housekeeping operation (like dropping of temporary tables, etc.). Right now these operations are done at the time of logging out. But what if the user doesn't logout. Is there any way determining the expiry of a session and then immediately performing the housekeeping activities? -- http://www.php.net/manual/en/ref.session.php http://master.php.net/manage/user-notes.php?action=edit+19536 http://master.php.net/manage/user-notes.php?action=delete+19536 http://master.php.net/manage/user-notes.php?action=reject+19536