Get post types that have a specific taxonomy, returns an array of objects or names, or false if nothing found.
| <?php | |
| /** | |
| * Get post types that have a specific taxonomy (a combination of get_post_types and get_object_taxonomies) | |
| * | |
| * @author Joshua David Nelson, [email protected] | |
| * @license http://www.gnu.org/licenses/gpl-2.0.html GPLv2.0 | |
| * | |
| * @see register_post_types(), get_post_types(), get_object_taxonomies() | |
| * | |
| * @param string $taxonomy Required. The name of the taxonomy the post type(s) supports. | |
| * @param array | string $args Optional. An array of key => value arguments to match | |
| * against the post type objects. Default empty array. | |
| * @param string $output Optional. The type of output to return in the array. | |
| * Accepts post type 'names' or 'objects'. Default 'names'. | |
| * | |
| * @return array | boolean A list of post type names or objects that have the taxonomy | |
| * or false if nothing found. | |
| */ | |
| if( !function_exists( 'get_post_types_by_taxonomy' ) ) { | |
| function get_post_types_by_taxonomy( $taxonomy, $args = array(), $output = 'names' ) { | |
| // Get all post types | |
| $post_types = get_post_types( $args, $output ); | |
| // We just need the taxonomy name | |
| if( is_object( $taxonomy ) ){ | |
| $taxonomy = $taxonomy->name; | |
| // If it's not an object or a string, it won't work, so send it back | |
| } elseif( !is_string( $taxonomy ) ) { | |
| return false; | |
| } | |
| // setup the finished product | |
| $post_types_with_tax = array(); | |
| foreach( $post_types as $post_type ) { | |
| // If post types are objects | |
| if( is_object( $post_type ) ) { | |
| $taxonomies = get_object_taxonomies( $post_type->name, 'names' ); | |
| if( in_array( $taxonomy, $taxonomies ) ) { | |
| $post_types_with_tax[] = $post_type; | |
| } | |
| // If post types are strings | |
| } elseif( is_string( $post_type ) ) { | |
| $taxonomies = get_object_taxonomies( $post_type, 'names' ); | |
| if( in_array( $taxonomy, $taxonomies ) ) { | |
| $post_types_with_tax[] = $post_type; | |
| } | |
| } | |
| } | |
| // If there aren't any results, return false | |
| if( empty( $post_types_with_tax ) ) { | |
| return false; | |
| } else { | |
| return $post_types_with_tax; | |
| } | |
| } | |
| } |
Source: https://gist.github.com/joshuadavidnelson/56d73c284490f9ef21a5
Tags: custom post type, Taxonomy
