title: Get referer inside php file_get_contents
body: <p>I've got some file on <code>www.aaa.com/file.php</code></p>
  
  <p>I've got another file on <code>www.saveme.com/file2.php</code></p>
  
  <p>And inside this 2nd one I call 1st one this way <code>file_get_contents('www.aaa.com/file.php');</code></p>
  
  <p>I want <code>www.aaa.com/file.php</code> to get url of site that has called it. </p>
  
  <p>Is it possible?</p>
  
  <p><code>www.lol.com</code> calls <code>www.aaa.com/file.php</code>  -> it gets <code>www.lol.pl</code></p>
  
  <p><code>www.another.com</code> calls it -> it gets <code>www.another.com</code></p>
  
  <p>Something like 'who've called me from another server and what server was it?'</p>