How to.....?

How to display category hierarchy in WordPress



<ul>
    <?php $categoryterm = get_terms("taxonomy-name", array("orderby" => "slug", "parent" => 0)); ?>
    <?php foreach($categoryterm as $key => $cateterm) : ?>
        <li>
            <?php echo $cateterm->name; ?>
            <?php $childterms = get_terms("taxonomy-name", array("orderby" => "slug", "parent" => $cateterm->term_id)); ?>
            <?php if($childterms) : ?>
                <ul>
                    <?php foreach($childterms as $key => $childterm) : ?>
                        <li><?php echo $childterm->name; ?></li>
                    <?php endforeach; ?>
                </ul>
            <?php endif; ?>
        </li>
    <?php endforeach; ?>
</ul>