PHP Cookie example
<?php
$num_visits = $_COOKIE['page_load_count'];
if(isset($_GET['reset']) || !isset($num_visits)){
$num_visits = 0;
}
$num_visits++;
setcookie('page_load_count', $num_visits);
?>
<h1>Hello</h1>
<p>You have visited this page <?= $num_visits ?> times</p>
<p><a href="?reset=true">Reset</a></p>
<?php if($num_visits >= 5): ?>
<h2>Wow!</h2>
<p>You sure come to this page a lot.</p>
<?php endif; ?>