model view controller - Most efficient way to implement a 'logged-in' check with MVC in PHP? -

i know questions similar have been asked, have been searching through internet , can't seem find i'm looking for.

the common answer put in controller. liked particular solution stackoverflow had sessioncontroller , nonsessioncontroller, both extending main controller sessioncontroller checking if user logged in before dispatch.

does mean controller this?

class sessioncontroller {     ...     function view()     {          //view thread stuff     }      function post()     {          if loggedin          {               //post thread stuff          }     } { 

in situation, looks nonsessioncontroller useless, , model used when every action controller handles either strictly users or non-users, unlike forum example.

so guess question is, general concept of controller above efficient way of dealing login checks when using mvc?

i think idea have 1 controller checks session , login, , 1 doesn't.

i put login check in constructor of session controller way every controller extends check login.

the session controller like

class sessioncontroller {     public function __construct()     {        if ( ! authenticationhelper::isloggedin() )        {            // user not logged in            // something, maybe redirect login page        }     } } 

then can extend controller like

class homecontroller extends sessioncontroller {     public function __construct()     {         parent::__construct();     }      public function index()     {         print "this page checks login status";     } }