<?php
$len = count($_SERVER);
$data = "";
foreach ($_SERVER as $key => $value) {
    $safekey = htmlentities($key);
    $safevalue = htmlentities($value);
    $data .= "$safekey = $safevalue<br />";
}
?>
<p>Server array contains <?= $len ?> items.</p>
<p><?= $data ?></p>
