<HTML>
<HEAD>
<TITLE>
</TITLE>
</HEAD>
<BODY>

<?php

// Application on variables and arrays

// Below they must be uppercase. Lower: no error but no result.

    $a = $_SERVER['HTTP_USER_AGENT'];
//  $a = $_SERVER["HTTP_USER_AGENT"]; // OK
    $i = $_SERVER['REQUEST_URI']; 
    $ip = $_SERVER['REMOTE_ADDR']; 
    $ref = $_SERVER['HTTP_REFERER']; 
    $d = date('r'); 

echo "User Agent = $a<p> URI = $i<p> IP = $ip <p> Remote Addr = $ref <p> 
Date = $d<P>";

?>

</BODY>
</HTML>
