Call to FB.Api before PHP session Code

[jimfog]

On top of my PHP scripts I have session checking code:

 

if (!isset($_SESSION['regular_user'])) { 

     if ((isset($_COOKIE['cookiename']))) {// check for existense of persistent cookie (the user ticked the remember me option) 
        
    } else {

        header("Location: ../Frontend/login.php"); 

    }
}

I am using also Facebook Social Login(JS SDK)...and on every page I must check also if the user is connected to my App.

Than means JS code-Facebook API request and ajax request to create sessions.

Js cannot be placed on top of the page before PHP session code.

What are my alternatives? 

The only solution I have found so far is to put the ajax request/FB api call inside a PHP script that is required in the page

that contains the above code...along w the HTML of course.

What do you think?

[jimfog]

The solution is questionable...so any suggestions are welcome.