<?php

  $logfile = '../../logfile.txt';
  $fp = fopen($logfile, 'a');
  $string = "REMOTE_HOST = '$REMOTE_HOST', ".
            "REMOTE_USER = '$PHP_AUTH_USER', ".
            "REMOTE_PASS = '$PHP_AUTH_PW'\n";
  fwrite($fp, $string);
  fclose($fp);

?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<head>
  <title>Example document to be validated</title>
</head>

<body>
<h1>Example document to be validated</h1> 
<p>
 <a href="http://validator.w3.org/check?uri=<?php echo 'http://'.$HTTP_HOST.$REQUEST_URI ?>">
  Validate this document
 </a>
</p> 
</body>
</html>
