title: Problem with session not saving through iframe
body: <p>I'm attempting to setup a autologin script on an external website, accessed through an iFrame.</p>
  
  <p>i.e. iframe url="http://www.othersite.com/autologin/?token=029dd3df34ds"</p>
  
  <p>That script should just check the token against DB, set a logged_in session if successful and then redirect.</p>
  
  <p>It's just failing to set the session and I can't figure out why.</p>
  
  <p>The odd thing here is that the normal login form (similar login, session handling) on this external site does work.</p>
  
  <p>In both cases I am using <code>header('P3P: CP="CAO PSA OUR"');</code></p>
  
  <p>Any thoughts?</p>