When you develop WordPress plug-in widget etc you will have to get subcategory of a given category. You can use the following code to get the subcategory
We are going to use get_terms($taxonomies, $args)
function. If you want to learn more about this function please have look at the code reference
$parent_category_id = 4 // category id of parent $taxonomies = array( 'category', ); $args = array( 'parent' => $parent_category_id, // 'child_of' => $parent_category_id, ); $terms = get_terms($taxonomies, $args);