How to implement thinkphp background detection of user login timeout

class CommAction extends Action {
 public function __construct() {
 parent::__construct();
 $this->checkAdminSession();
 }

 public function checkAdminSession() {
 //Set the timeout to 10 minutes
 $nowtime = time();
 $s_time = $_SESSION['logintime'];
 if (($nowtime - $s_time) > 600) {
 unset($_SESSION[' logintime']);
 $this->error('The current user is not logged in or the login has timed out, please log in again', U('login/loginpage'));
 } else {
 $_SESSION['logintime'] = $nowtime;
 }
 }
}
?>

If it is a process-oriented program, write a session.inc.php, write the program judgment in this file, and then other files Just include it.