get terms list

term_list.php

function naked_print_tax_summary($tax = 'category') {
  $tax_summary = naked_get_tax_summary($tax);
  if(!empty($tax_summary)) {
    ob_start(); ?>
    <ul>
    <?php foreach($tax_summary as $tax_item): ?>
      <li>
        <a href="<?= $tax_item['link']; ?>"><?= $tax_item['name']; ?></a>
        <span class="posts-count"><?= $tax_item['count']; ?></span>
        <?php if(isset($tax_item['childs']) && !empty($tax_item['childs'])): ?>
          <ul class="has-childs">
            <?php foreach($tax_item['childs'] as $child_item): ?>
              <li>
                <a href="<?= $child_item['link']; ?>"><?= $child_item['name']; ?></a>
                <span class="posts-count"><?= $child_item['count']; ?></span>
              </li>
            <?php endforeach; ?>
          </ul>
        <?php endif; ?>
      </li>
    <?php endforeach; ?>
    </ul>
    <?php
    $html = ob_get_clean();
  }
  print($html);
}

function naked_get_tax_summary($tax) {
  $summary = array();
  $tax_terms = get_terms($tax, array('hide_empty' => false));
  if(is_wp_error($tax_terms))
    return array();

  foreach ($tax_terms as $tax_term_obj) {
    if($tax_term_obj->parent) {
      $summary[$tax_term_obj->parent]['childs'][$tax_term_obj->term_id] = array(
        'id' => $tax_term_obj->term_id,
        'name' => $tax_term_obj->name,
        'link' => get_term_link($tax_term_obj),
        'count' => $tax_term_obj->count
      );
    }else{
      $summary[$tax_term_obj->term_id] = array(
        'id' => $tax_term_obj->term_id,
        'name' => $tax_term_obj->name,
        'link' => get_term_link($tax_term_obj),
        'count' => $tax_term_obj->count,
      );
    }
  }

  return $summary;
}