rest_handle_options_request( mixed $response, WP_REST_Server $handler, WP_REST_Request $request ): WP_REST_Response

837function rest_handle_options_request( $response, $handler, $request ) {838	if ( ! empty( $response ) || $request->get_method() !== 'OPTIONS' ) {839		return $response;840	}841 842	$response = new WP_REST_Response();843	$data     = array();844 845	foreach ( $handler->get_routes() as $route => $endpoints ) {846		$match = preg_match( '@^' . $route . '$@i', $request->get_route(), $matches );847 848		if ( ! $match ) {849			continue;850		}851 852		$args = array();853		foreach ( $matches as $param => $value ) {854			if ( ! is_int( $param ) ) {855				$args[ $param ] = $value;856			}857		}858 859		foreach ( $endpoints as $endpoint ) {860			$request->set_url_params( $args );861			$request->set_attributes( $endpoint );862		}863 864		$data = $handler->get_data_for_route( $route, $endpoints, 'help' );865		$response->set_matched_route( $route );866		break;867	}868 869	$response->set_data( $data );870	return $response;871}