How to create a ul - li menu from a tree like array?

Question

I have an array with title and children index.

title is always not-null. children is an array, empty or not-empt

Answer 1

I'm sure this will work :

    function menu($arr) {
        echo "
";
        foreach ($arr as $val) {

            if (!empty($val['children'])) {
                echo "
" . $val['title'];
                menu($val['children']);
                echo "
";
            } else {
                echo "
" . $val['title'] . "
";
            }
        }
        echo "
";
    }