Usage:
$hierarchies = get_taxonomy_hierarchy_multiple( array( 'category', 'post_tag' ) ); // or for a single taxonomy $hierarchy = get_taxonomy_hierarchy( 'category' );
What’s going on?
During the first execution, we use get_terms() to gather all terms that do not have any parents ( parent = 0 ). Then, we loop through those terms, and look for terms whose parent is “this” term. Every time we loop through a set of terms, we look for children that belong to each term. Ultimately, we return an array of terms with nested children terms within the children property.
7 thoughts on “WordPress: Get taxonomy hierarchy, including children”
Michael
Nice, thanks.
Alexander Khmelnitskiy
Thanks mate!
Exactly what I need.
sasasasa
I get “Warning: Missing argument 1 for get_taxonomy_hierarchy()”
Jonathan Daggerhart
Sounds like you need to specify which taxonomy you’re trying to get. The core WordPress taxonomies are named “category” and “post_tag”.
Andrew Robbins
Thanks, saved me a lot of time.
Biswajit Paul
Nice work.
Carlos Souza
Thanks man, you saved me a lot of time and work :)