PHP Facebook sdk getuser（）返回0

Question

I am using facebook php sdk 3

I am using following code :

$facebook = new Facebook(array(
                'appId'  => MY_APP_ID,
                'secret' => MY_APP_SECRET,
                'cookie' => true
              ));


$userId = $facebook->getUser();

if(!empty($userId)) {
   echo "This is the user id : " . $facebook->getUser();
}

but it is always returning 0, before two days it was working finely but today suddenly it is returning 0, I am not getting why ?

Answer 1

您绝对应该更新PHP SDK版本，因为使用旧版本时，当前的API更改可能不会反映出来，从而引起问题。