title: PHP json_decode return empty array
body: <p>I just test this sample from php doc (<a href="http://au2.php.net/manual/en/function.json-decode.php" rel="nofollow">http://au2.php.net/manual/en/function.json-decode.php</a>)</p>
  
  <p>here is my code:</p>
  
  <pre><code>&lt;?php $json = '{"a":1,"b":2,"c":3,"d":4,"e":5}'; echo json_decode($json, true), '&lt;br /&gt;';?&gt;
  </code></pre>
  
  <p>But it just returns an EMPTY array.</p>
  
  <p>Have no idea why...Been searching around but no solution found.</p>
  
  <p>PLEASE help!</p>