Как возвратить из функции несколько переменных Wordpress?

$test_query_args = array(
    'post_type' => 'question', 
    'posts_per_page' => 4, 
  );

$end_variable = array();
  $test_json_query = get_posts( $test_query_args );
  
  foreach ( $test_json_query as $post ) : 
    	setup_postdata( $post );

    	$end_variable[] = get_the_title();
  endforeach;
  wp_reset_postdata(); 

  return rest_ensure_response( $end_variable );