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get_object_taxonomies( string|string[]|WP_Post $object, string $output = 'names' )

Return the names or objects of the taxonomies which are registered for the requested object or object type, such as a post object or post type name.

Description

Example:

$taxonomies = get_object_taxonomies( 'post' );

This results in:

Array( 'category', 'post_tag' )

Parameters

$object

(string|string[]|WP_Post) (Required) Name of the type of taxonomy object, or an object (row from posts)

$output

(string) (Optional) The type of output to return in the array. Accepts either 'names' or 'objects'.

Default value: 'names'

Return

(string[]|WP_Taxonomy[]) The names or objects of all taxonomies of $object_type.

Source

File: wp-includes/taxonomy.php 

function get_object_taxonomies( $object, $output = 'names' ) {
	global $wp_taxonomies;

	if ( is_object( $object ) ) {
		if ( 'attachment' === $object->post_type ) {
			return get_attachment_taxonomies( $object, $output );
		}
		$object = $object->post_type;
	}

	$object = (array) $object;

	$taxonomies = array();
	foreach ( (array) $wp_taxonomies as $tax_name => $tax_obj ) {
		if ( array_intersect( $object, (array) $tax_obj->object_type ) ) {
			if ( 'names' === $output ) {
				$taxonomies[] = $tax_name;
			} else {
				$taxonomies[ $tax_name ] = $tax_obj;
			}
		}
	}

	return $taxonomies;
}

Used By

Used By Description
wp-admin/includes/meta-boxes.php: register_and_do_post_meta_boxes()

Registers the default post meta boxes, and runs the do_meta_boxes actions.
wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php: WP_REST_Posts_Controller::get_available_actions()

Get the link relations available for the post and current user.
wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php: WP_REST_Posts_Controller::get_schema_links()

Retrieve Link Description Objects that should be added to the Schema for the posts collection.
wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php: WP_REST_Posts_Controller::prepare_links()

Prepares links for the request.
wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php: WP_REST_Posts_Controller::get_item_schema()

Retrieves the post’s schema, conforming to JSON Schema.
wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php: WP_REST_Posts_Controller::get_collection_params()

Retrieves the query params for the posts collection.
wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php: WP_REST_Posts_Controller::prepare_item_for_response()

Prepares a single post output for response.
wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php: WP_REST_Posts_Controller::handle_terms()

Updates the post’s terms from a REST request.
wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php: WP_REST_Posts_Controller::check_assign_terms_permission()

Checks whether current user can assign all terms sent with the current request.
wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php: WP_REST_Posts_Controller::get_items()

Retrieves a collection of posts.
wp-includes/rest-api/endpoints/class-wp-rest-taxonomies-controller.php: WP_REST_Taxonomies_Controller::get_items_permissions_check()

Checks whether a given request has permission to read taxonomies.
wp-includes/rest-api/endpoints/class-wp-rest-taxonomies-controller.php: WP_REST_Taxonomies_Controller::get_items()

Retrieves all public taxonomies.
wp-includes/rest-api/endpoints/class-wp-rest-post-types-controller.php: WP_REST_Post_Types_Controller::prepare_item_for_response()

Prepares a post type object for serialization.
wp-includes/class-wp-post-type.php: WP_Post_Type::unregister_taxonomies()

Removes the post type from all taxonomies.
wp-includes/post.php: wp_queue_posts_for_term_meta_lazyload()

Queues posts for lazy-loading of term meta.
wp-admin/includes/export.php: wxr_post_taxonomy()

Output list of taxonomy terms, in XML tag format, associated with a post
wp-admin/includes/template.php: get_inline_data()

Adds hidden fields with the data for use in the inline editor for posts and pages.
wp-admin/includes/post.php: bulk_edit_posts()

Process the post data for the bulk editing of posts.
wp-admin/includes/class-wp-posts-list-table.php: WP_Posts_List_Table::inline_edit()

Outputs the hidden row displayed when inline editing
wp-admin/includes/class-wp-posts-list-table.php: WP_Posts_List_Table::get_columns()
wp-includes/class-wp-query.php: WP_Query::get_posts()

Retrieves an array of posts based on query variables.
wp-includes/taxonomy.php: update_object_term_cache()

Updates the cache for the given term object ID(s).
wp-includes/taxonomy.php: get_the_taxonomies()

Retrieve all taxonomies associated with a post.
wp-includes/taxonomy.php: get_post_taxonomies()

Retrieve all taxonomy names for the given post.
wp-includes/taxonomy.php: is_object_in_taxonomy()

Determine if the given object type is associated with the given taxonomy.
wp-includes/taxonomy.php: clean_object_term_cache()

Removes the taxonomy relationship to terms from the cache.
wp-includes/nav-menu-template.php: _wp_menu_item_classes_by_context()

Adds the class property classes for the current context, if applicable.
wp-includes/media.php: get_attachment_taxonomies()

Retrieves taxonomies attached to given the attachment.
wp-includes/post.php: _update_term_count_on_transition_post_status()

Update the custom taxonomies’ term counts when a post’s status is changed.
wp-includes/post.php: wp_delete_attachment()

Trash or delete an attachment.
wp-includes/post.php: wp_insert_post()

Insert or update a post.
wp-includes/post.php: wp_delete_post()

Trash or delete a post or page.
wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::_insert_post()

Helper method for wp_newPost() and wp_editPost(), containing shared logic.
wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::_prepare_post()

Prepares post data for return in an XML-RPC object.
wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::_prepare_post_type()

Prepares post data for return in an XML-RPC object.

Changelog

Version Description
2.3.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/get_object_taxonomies