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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> ...