Facebook php sdk 3.2.2 GetUser() always return 0 [duplicate]

Question

i spent all day searching for an answer.. but it seems that nothing can fix it. i guess every version had a different issue...

well it's pretty simple, i have this code:

    <?php
    include_once("facebook.php"); //include facebook SDK

    ######### edit details ##########
    $appId = '****'; //Facebook App ID
    $appSecret = '****'; // Facebook App Secret
    ##################################

    //Call Facebook API
    $facebook = new Facebook(array(
      'appId'  => $appId,
      'secret' => $appSecret,
      'cookie' => true
    ));

    $fbuser = $facebook->getUser();


    if ($fbuser) {
    // Do Something

    }
    else{               
    //Show login button for guest users
    $loginUrl = $facebook->getLoginUrl(array('redirect_uri'=>$homeurl,'scope'=>$fbPermissions));
    echo '<a href="'.$loginUrl.'"><img src="images/facebook-login.png" border="0"></a>';
    }
    ?>

i get 0 in get user every time. when i go to "login on facebook" and im not logged in, i get facebook login screen. when i go to "login on facebook" and im logged in, facebook redirect me to my page and i get 0 in get user again.

i'm tring to run it on my localhost, maybe thats the problem?

hope someone can help.. thx

Answer 1

I had a similar problem using the same simple login script. I tried almost anything but nothing helped. (the weird thing was that the day before everything was working fine).

So started debugging the "base_facebook.php" and found that the function getAccessTokenFromCode failed without an exception (silently).

It turned out that the response of _oauthRequest gave an error message reply instead of the expected token reply:

$access_token_response =
        $this->_oauthRequest(
          $this->getUrl('graph', '/oauth/access_token'),
            $params = array ('client_id' => $this->getAppId(),
                             'client_secret' => $this->getAppSecret(),
                             'redirect_uri' => $redirect_uri,
                             'code' => $code));

So by adding echo $access_token_response; directly after this function a found my problem.

The response error was that my app was configured as a Native/Desktop app. After I changed it to Internet the getUser(); gave the correct user id.

I hope this helps.