我的类别结构如下类别结构：
Product 1
Product 2
Product 2.1
Product 2.2
Product 3
Product 4
Product 4.1
Product 4.2
如何获取所有类别&它在WordPress中的子类别。我的帖子类型名称是Product&分类名称为产品类别
这可能会对您有所帮助。。
<?php
//list terms in a given taxonomy using wp_list_categories (also useful as a widget)
$orderby = 'name';
$show_count = 0; // 1 for yes, 0 for no
$pad_counts = 0; // 1 for yes, 0 for no
$hierarchical = 1; // 1 for yes, 0 for no
$taxonomy = 'genre';
$title = '';
$args = array(
'orderby' => $orderby,
'show_count' => $show_count,
'pad_counts' => $pad_counts,
'hierarchical' => $hierarchical,
'taxonomy' => $taxonomy,
'depth' => 2,
'hide_empty' => 0,
'title_li' => $title
);
?>
<ul>
<?php
wp_list_categories($args);
?>
</ul>