I see this has been asked a lot here but I still have yet to come up with a solution. I need to get the user's ID to determine if they have already filled out a form in my app. Here is my code..
require_once('facebook.php');
$facebook = new Facebook(array(
'appId' => 'xxxxxxxxxx',
'secret' => 'xxxxxxxxxxxxxxxxxxxxxxxxxxxx',
'cookie' => false,
));
$signed_request = $facebook->getSignedRequest();
$page_id = "fb" . $signed_request['page']['id'];
$user_id = $facebook->getUser();
I don't know if this is related or not but I can grab the page id just fine. But $user_id keeps returning as 0 for all users except me. I'm guessing that's because I'm an admin of my page.
Does anybody know what the problem is here?
i has this problem too, the only solution was to use oauth before with permission request "user_about_me". Since FB uses oauth 2.0, most user values are hidden and you have to request all this sh*t :(