title: Sessions works fine in local mode, but not in server
body: <p>I've just developped a project, which uses sessions, in PHP. It works fine in local mode, but when I upload to server, it doesn't works. Well, it works at 50%, because when I send it by POST, I can get the whole session correctly, but when I do header(); to my index.php, session 
  just desapeared.</p>
  
  <ol>
  <li>Sessions are enabled in my server.</li>
  <li>All docs has session_start(); at the top of page.</li>
  <li>When I do header(); I set die(); below.</li>
  <li>Syntax is correct. Got no errors.</li>
  </ol>
  
  <p>Does anyone knows what is happening?</p>