title: Facebook api call in php returns empty
body: <p>I have result of <code>$result = $facebook-&gt;api($params);</code> How to extract information from it? Cant decode it using json_decode, gets an error the parameter is string. Searched a lot for the solution, couldn't find any related information.</p>
  
  <p>EDIT</p>
  
  <pre><code>$params = array(
  
   'method' =&gt; 'fql.query',
   'query' =&gt; "SELECT uid,pic_square,name,devices FROM user WHERE uid IN (SELECT uid2 FROM friend WHERE uid1=me())",
      );
    $result = $facebook-&gt;api($params);
  </code></pre>
  
  <p>Could this return empty? Without showing any error? What am I doing wrong?</p>