is_object_in_taxonomy( string $object_type, string $taxonomy )

Determine if the given object type is associated with the given taxonomy.

Parameters

$object_type

(string) (Required) Object type string.

$taxonomy

(string) (Required) Single taxonomy name.

Return

(bool) True if object is associated with the taxonomy, otherwise false.

Source

File: wp-includes/taxonomy.php 

function is_object_in_taxonomy( $object_type, $taxonomy ) {
	$taxonomies = get_object_taxonomies( $object_type );
	if ( empty( $taxonomies ) ) {
		return false;
	}
	return in_array( $taxonomy, $taxonomies, true );
}

Uses

Uses Description
wp-includes/taxonomy.php: get_object_taxonomies()

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.

Used By

Used By Description
wp-admin/includes/class-wp-posts-list-table.php: WP_Posts_List_Table::formats_dropdown()

Displays a formats drop-down for filtering items.
wp-admin/includes/class-wp-posts-list-table.php: WP_Posts_List_Table::categories_dropdown()

Displays a categories drop-down for filtering on the Posts list table.
wp-admin/includes/class-wp-screen.php: WP_Screen::get()

Fetches a screen object.
wp-includes/category-template.php: get_the_category_list()

Retrieves category list for a post in either HTML list or custom format.
wp-includes/link-template.php: get_adjacent_post()

Retrieves the adjacent post.
wp-includes/post-template.php: get_post_class()

Retrieves an array of the class names for the post container element.
wp-includes/class-wp-post.php: WP_Post::__get()

Getter.
wp-includes/post.php: wp_set_post_categories()

Set categories for a post.
wp-includes/post.php: wp_insert_post()

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

Update a post with new post data.
wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::_prepare_page()

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

Changelog

Version Description
3.0.0 Introduced.

© 2003–2021 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/is_object_in_taxonomy