屏幕截图看起来像一个菜单，下面是我的操作方法：

自定义分类法

您将要使用register_taxonomy, 要列出这些术语，您需要查看以下函数get_terms 要检索没有父级的顶级术语，请重复下一级

我认为最好注册自定义分类法类型，否则您可以add categories to your CPT code which registers your CPT.

add_action( \'init\', \'wpsites_register_taxonomy_types\' );
function wpsites_register_taxonomy_types() {

register_taxonomy( \'cpt-type\', \'cpt\',
array(
    \'labels\' => array(
        \'name\'          => _x( \'Types\', \'taxonomy general name\', \'theme\' ),
        \'add_new_item\'  => __( \'Add New CPT Type\', \'theme\' ),
        \'new_item_name\' => __( \'New CPT Type\', \'theme\' ),
    ),
    \'exclude_from_search\' => true,
    \'has_archive\'         => true,
    \'hierarchical\'        => true,
    \'rewrite\'             => array( \'slug\' => \'cpt-type\', \'with_front\' => false ),
    \'show_ui\'             => true,
    \'show_tagcloud\'       => false,
));

}