Stuff

<?php
$menu = array("oi", "testes" => array("a", "b", "c"), "tchau");

function menu($d) {
    echo "<ul>";
    foreach($d as $k => $v) {
        if(is_array($v)) {
            echo "<li>$k";
            menu($v);
            echo "</li>";
        }
        else {
            echo "<li>$v</li>";
        }
    }
    echo "</ul>";
}

menu($menu);
?>