Pfade ermitteln

<?php
echo "PHP-SELF ".$_SERVER['PHP_SELF']."<br />";
echo "Request-URI ".$_SERVER['REQUEST_URI']."<br />";
echo "Script-Filename ".$_SERVER['SCRIPT_FILENAME']."<br />";
echo "Script-Name ".$_SERVER['SCRIPT_NAME']."<br />";
echo "Document-Root ".$_SERVER['DOCUMENT_ROOT'];
?>