wp-includes/taxonomy.php:605Unregisters a taxonomy.
$taxonomystringtrue|WP_ErrorOne hook fires while unregister_taxonomy() runs, in this order:
Fires after a taxonomy is unregistered.
function unregister_taxonomy( $taxonomy ) { global $wp_taxonomies; if ( ! taxonomy_exists( $taxonomy ) ) { return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); } $taxonomy_object = get_taxonomy( $taxonomy ); // Do not allow unregistering internal taxonomies. if ( $taxonomy_object->_builtin ) { return new WP_Error( 'invalid_taxonomy', __( 'Unregistering a built-in taxonomy is not allowed.' ) ); } $taxonomy_object->remove_rewrite_rules(); $taxonomy_object->remove_hooks(); // Remove the taxonomy. unset( $wp_taxonomies[ $taxonomy ] ); /** * Fires after a taxonomy is unregistered. * * @since 4.5.0 * * @param string $taxonomy Taxonomy name. */ do_action( 'unregistered_taxonomy', $taxonomy ); return true;}Introduced in 4.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/taxonomy.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.