title: file_get_contents (or curl, or fopen) problem with session data
body: <p>i have a page that shows a value from session, lets call it www.domain-a.com/master.php and if i type it directly from the browser, it shows me the session value.</p>
  
  <p>but when i try to download it with file_get_contents (or other method) from another domain, like www.domain-b.com/slave.php, it is not retrieving the content protected by the session, just a blank page.</p>
  
  <p>i know it is because the server-b is trying to retrieve the content, not the user...</p>
  
  <p>anyone knows how to tell the domain-a that who is retrieving the information is the user? there is a way to retrieve the session value?</p>
  
  <p>regards,</p>
  
  <p>josé</p>