Q:

Order custom taxonomy hierarchy

I have some custom taxonomy for regions.
Commonly it would look something like this.
USA (parent)
- Arizona (child 1)
- - Phoenix (child 2)

however, there will be cases where it will only be like 
USA
- Arizona

or
UK
- Wales

and maybe even just
Japan

In my for loop I get the taxonomy data as $location = get_the_terms( $id, 'listings_region' );
and then in the html/php I can simply write $location[0]->name and then I get the the name of the first object in the array. 
I have however noticed that the taxonomy comes back not in the correct hierarchy - instead, alphabetically. 
When I echo '<pre>'; print_r($location); echo '</pre>', I get the array and [0] would be Arizona and [1] would be USA. 
How can I retrieve it the taxonomy array in the correct order so that ideally [0] is always the parent, [1] is the first child, etc? 
Thanks in advance.

A:

Got it working,         
$location = wp_get_post_terms($id, 'listings_region', array('orderby'=> 'parent'));

