<?php
  require_once dirname(__FILE__)."/../config.inc";
  require_once "$path_prefix/db/Dal/Dal.php";
  require_once "$path_prefix/ext/PingServer/PingServer.php";
  
  
  // TO DO: Change the File Path.
  $filename = $path_prefix.'/web/Ping/changes_user.xml';
  
            
  // make file if it does not exists or remake it after one hour
  if(!file_exists($filename) || (!(time() - filectime($filename)) < 3600)) {
      $PingServer = new PingServer();
      $PingServer->generate_xml ();
  }
  
  $handle = @fopen($filename, 'r');
  $content = @fread($handle, filesize($filename));
  print $content;
?>