wordpress 自定义栏目类型 调用所有子栏目？

$taxonomies = get_terms( array(
    'taxonomy' => 'products',
    'hide_empty' => false
) );

if ( !empty($taxonomies) ) {



$catid_arr=[];
 foreach( $taxonomies as $category ) {

   $catid_arr[]=$category->term_id;

 }


 };