Question

I’m trying to write PHP code that will display the logged in user’s name. So far I’ve got it to display the user’s id but I can’t get the name to show.

    <?php 

     $app_id = "...";

     $canvas_page = "...";

     $auth_url = "http://www.facebook.com/dialog/oauth?client_id=" 
            . $app_id . "&redirect_uri=" . urlencode($canvas_page);

     $signed_request = $_REQUEST["signed_request"];

     list($encoded_sig, $payload) = explode('.', $signed_request, 2); 

     $data = json_decode(base64_decode($payload), true);

     if (empty($data["user_id"])){
            echo("<script> top.location.href='" . $auth_url . "'</script>");
     } else {
            echo ("Welcome User: " . $data['user_id']);
     }  

 ?>

Changing ‘user_id’ to ‘name’ or ‘first_name’ doesn’t show anything.

Answer 1

You need to hit the /me API to get user data.

If using PHP, why don’t you check out the PHP SDK?