title: Safari and php sessions not working in facebook iframe
body: <p>I'm having a problem to make my facebook app working on Safari.</p>
  
  <p>The issue is related to the PHP session variables.</p>
  
  <p>I am aware that Safari has a problem dealing with cross domain sessions (inside an iframe) and i found around 2 types of solutions:</p>
  
  <ol>
  <li>Setting the p3p header: i've tried many p3p header found around but no one of them worked [for example: <code>header('P3P: CP="NOI ADM DEV COM NAV OUR STP"');</code>].</li>
  <li>Sending a post to the iframe, using javascript. This creates interaction and sessions should work. But the fact is that i do not control the iframe container, as that is facebook.</li>
  </ol>
  
  <p>Does anyone know an alternative solution?</p>
  
  <p>Thanks!</p>