title: Facebook ID change
body: <p>im developing a web with Facebook Login. When the user login, i store the facebook id.</p>
  
  <p><strong>The problem is that i change the AppID and AppSecret (because i create a new app in facebook) and the user id return by facebook is different than my old app</strong></p>
  
  <p>Im using PHP v4.0 Facebook SDK and this is my code:</p>
  
  <pre><code>$facebook = new Facebook(array(
            'appId'  =&gt; '***********',
            'secret' =&gt; '**********************',
            'cookie' =&gt; true,    
            'oauth'  =&gt; true,
          ));
  
      $user = $facebook-&gt;getUser();
      $me = null; 
  
      if ($user) {
          try {
              $me = $facebook-&gt;api('/me');
              $this-&gt;facebook_id = $me['id'];
  </code></pre>
  
  <p>Then i store it in a database..</p>
  
  <p><strong>Thanks!</strong></p>