$taxonomyName = 'taxonomy_name';
// https://developer.wordpress.org/reference/functions/get_terms/
$parent_terms = get_terms(array(
'taxonomy' => $taxonomyName,
'parent' => 0,
'orderby' => 'name',
'hide_empty' => true,
));
foreach ( $parent_terms as $parent_term ) {
$terms = get_terms(array(
'taxonomy' => $taxonomyName,
'parent' => $parent_term->term_id,
'hide_empty' => true,
'orderby' => 'name',
));
foreach ( $terms as $child_term ) {
// Do something
}
}
Get taxonomy terms and their children
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