Auto Logout when user leaves the application without doing logout action

Question

Sometimes , an user leave an application without clicking on logout button, or do shutting down or hibernating of its Machine, pr even close all sessions (pages) which related t

Answer 1

Try this:

if (isset($_SESSION['LAST_ACTIVITY']) && (time() - $_SESSION['LAST_ACTIVITY'] > 600)) {
    session_unset();
    session_destroy();
}
$_SESSION['LAST_ACTIVITY'] = time();

If $_SESSION['LAST_ACTIVITY'] > 600 no activity in last 600 seconds (10minutes) then destroy session.