WP_REST_Term_Search_Handler::search_items() WordPress Method

	public function search_items( WP_REST_Request $request ) {
		$taxonomies = $request[ WP_REST_Search_Controller::PROP_SUBTYPE ];
		if ( in_array( WP_REST_Search_Controller::TYPE_ANY, $taxonomies, true ) ) {
			$taxonomies = $this->subtypes;
		}

		$page     = (int) $request['page'];
		$per_page = (int) $request['per_page'];

		$query_args = array(
			'taxonomy'   => $taxonomies,
			'hide_empty' => false,
			'offset'     => ( $page - 1 ) * $per_page,
			'number'     => $per_page,
		);

		if ( ! empty( $request['search'] ) ) {
			$query_args['search'] = $request['search'];
		}

		/**
		 * Filters the query arguments for a REST API search request.
		 *
		 * Enables adding extra arguments or setting defaults for a term search request.
		 *
		 * @since 5.6.0
		 *
		 * @param array           $query_args Key value array of query var to query value.
		 * @param WP_REST_Request $request    The request used.
		 */
		$query_args = apply_filters( 'rest_term_search_query', $query_args, $request );

		$query       = new WP_Term_Query();
		$found_terms = $query->query( $query_args );
		$found_ids   = wp_list_pluck( $found_terms, 'term_id' );

		unset( $query_args['offset'], $query_args['number'] );

		$total = wp_count_terms( $query_args );

		// wp_count_terms() can return a falsey value when the term has no children.
		if ( ! $total ) {
			$total = 0;
		}

		return array(
			self::RESULT_IDS   => $found_ids,
			self::RESULT_TOTAL => $total,
		);
	}