http://php.flashwebhost.com/mini/cookie.php

Code:
<?php
if (isset($_COOKIE['Yoga_name'])) {
echo $_COOKIE['Yoga_name'] . ', Welcome to Free Online Yoga Videos';
exit;
}

if (isset($_POST['Yoga_name']) && strlen($_POST['Yoga_name']) > 3) {
setcookie('Yoga_name',$_POST['Yoga_name'], time() + 7200);
echo 'Cookie Set. Close the browser. Revisit this page, I will remember your name';
} else {
 echo '
        What is your name ?
        <form method="post" action="">
        <input type="text" name="Yoga_name">
        <button type="submit" name="submit">Enter Web Site</button>
        </form>
    ';
}