$logout_time = $vbulletin->input->clean_gpc('c', COOKIE_PREFIX . 'nextlogout', TYPE_UINT);if (TIMENOW > $logout_time){ // clear authentication cookies vbsetcookie('sessionhash', ''); vbsetcookie('userid', ''); vbsetcookie('password', ''); // set next clear time vbsetcookie('nextlogout', TIMENOW + 604800);}