title: simplexml_load_file($feedURL) returns bool(false) even that the RSS works
body: <p>I am trying to make a simple widget that loads a youtube rss feed and shows the few first videos.</p>
  
  <p>The problem is that even the RSS adress is correct it allways dumps false</p>
  
  <pre><code>$feedURL = 'http://gdata.youtube.com/feeds/api/users/ninpetit/uploads?alt=rss&amp;v=2';
  $sxml = simplexml_load_file($feedURL);
  var_dump($sxml); /* output:  bool(false)  */
  </code></pre>
  
  <p>What am I doing wrong? Is there any alternative to <code>simplexml_load_file</code>?</p>
  
  <p>PS: This code is being executed in a shared server</p>
  
  <p>EDIT</p>
  
  <p>I successfully getting the data vía curl, but the simplexml_load_file will return false if I pass the $data</p>
  
  <pre><code>$feedURL = 'http://gdata.youtube.com/feeds/api/users/ninpetit/uploads?alt=rss&amp;v=2';
  $ch = curl_init($feedURL);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  $data = curl_exec($ch);
  echo $data.'&lt;br&gt;'; /* shows data!! */
  sxml = simplexml_load_file($data); /*Also false*/
  </code></pre>