<?php
setcookie('unsafe', 'true');
setcookie('safe', 'true', 0, '', '', '', TRUE);

if ($_COOKIE['unsafe'])
    echo 'unsafe<br>';
if ($_COOKIE['safe'])
    echo 'safe<br>';

?>
<script>
if (/ safe/.test(document.cookie))
    document.write('FAIL');
else
    document.write('PASS');
</script>