How to get /insights/page_fans_country/ with PHP? - php

Question

I've been really desperate with this problem, I did not find an earlier post/solution for it.
So, the goal is to connect to Facebook (App created, token created, etc.) using PHP and access the /insights/page_fans_country/ of a page. I am able to access my own data with /me, but the access token is wrong for the session and therefore the page_fans_country (that is a public metric) cannot be accessed.
My code is here:
require_once( 'lib/src/Facebook/FacebookSession.php');
require_once( 'lib/src/Facebook/FacebookRequest.php' );
require_once( 'lib/src/Facebook/FacebookResponse.php' );
require_once( 'lib/src/Facebook/FacebookSDKException.php' );
require_once( 'lib/src/Facebook/FacebookRequestException.php' );
require_once( 'lib/src/Facebook/FacebookRedirectLoginHelper.php');
require_once( 'lib/src/Facebook/FacebookAuthorizationException.php' );
require_once( 'lib/src/Facebook/GraphObject.php' );
require_once( 'lib/src/Facebook/GraphUser.php' );
require_once( 'lib/src/Facebook/GraphLocation.php' );
require_once( 'lib/src/Facebook/GraphAlbum.php' );
require_once( 'lib/src/Facebook/GraphPage.php' );
require_once( 'lib/src/Facebook/GraphUserPage.php' );
require_once( 'lib/src/Facebook/GraphSessionInfo.php' );
require_once( 'lib/src/Facebook/Entities/AccessToken.php');
require_once( 'lib/src/Facebook/HttpClients/FacebookCurl.php' );
require_once( 'lib/src/Facebook/HttpClients/FacebookHttpable.php');
require_once( 'lib/src/Facebook/HttpClients/FacebookCurlHttpClient.php');
use Facebook\FacebookSession;
use Facebook\FacebookRedirectLoginHelper;
use Facebook\FacebookRequest;
use Facebook\FacebookResponse;
use Facebook\FacebookSDKException;
use Facebook\FacebookRequestException;
use Facebook\FacebookAuthorizationException;
use Facebook\GraphObject;
use Facebook\GraphUser;
use Facebook\GraphLocation;
use Facebook\GraphAlbum;
use Facebook\GraphPage;
use Facebook\GraphUserPage;
use Facebook\GraphSessionInfo;
use Facebook\AccessToken;
use Facebook\FacebookHttpable;
use Facebook\FacebookCurlHttpClient;
use Facebook\FacebookCurl;
session_start();
$app_id = 'MY_ID';
$app_secret = 'MY_SECRET';
$redirect_url='http://localhost/facebook/index.php/';
$access_token = ('MY_ACCESS_TOKEN');
FacebookSession::setDefaultApplication($app_id,$app_secret);
$helper = new FacebookRedirectLoginHelper($redirect_url);
$sess = $helper->getSessionFromRedirect();
if(isset($sess)){
$request = new FacebookRequest($sess, 'GET', '/me'); // THIS WORKS, GIVES MY PERSONAL INFORMATION!
// $request = new FacebookRequest($sess, 'GET', '/81221197163/insights/page_fans_country/');
$response = $request->execute();
$graphObject = $response->getGraphObject();
print_r($graphObject);
}else{
//else echo login
echo '<a href='.$helper->getLoginUrl().'>Login with facebook</a>';
}
So basically the commented request $request = new FacebookRequest($sess, 'GET', '/81221197163/insights/page_fans_country/'); does not work (of course while it is not commented).
So my questions are:
Am I doing something wrong?
Is there a command to change the session's Access Token?
What is the best way to get the /insights/page_fans_country/ values with PHP?
Thank you in advance for every reply!
Roni