browserinfo.php

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>Browser Info</title>
</head>
<body>
<h1>Browser Information</h1>
<p>Your web browser is
<?php
    print $_SERVER['HTTP_USER_AGENT'];
?>
</p>
</body>
</html>