Quick Quiz 2 PHP

<?php echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en-UK">
<head>
<title> Quick Quiz 2 PHP </title>
</head>
<body>
<p>Name is <?php echo $_GET['name'] ?></p>
<p>Age is <?php echo $_GET['age'] ?></p>
</body>
</html>