我刚刚在我的函数中注册了以下代码

add_action( \'init\', \'create_resources_taxonomies\', 0 );

function create_resources_taxonomies() {
    $labels = array(
        \'name\'              => _x( \'cat2\', \'taxonomy general name\' ),
        \'singular_name\'     => _x( \'cat2\', \'taxonomy singular name\' ),
        \'search_items\'      => __( \'Search category\' ),
        \'all_items\'         => __( \'All category\' ),
        \'parent_item\'       => __( \'Parent category\' ),
        \'parent_item_colon\' => __( \'Parent category:\' ),
        \'edit_item\'         => __( \'Edit category\' ),
        \'update_item\'       => __( \'Update Category\' ),
        \'add_new_item\'      => __( \'Add New Category\' ),
        \'new_item_name\'     => __( \'New category Name\' ),
        \'menu_name\'         => __( \'genre\' ),
    );

    $args = array(
        \'hierarchical\'      => true,
        \'labels\'            => $labels,
        \'show_ui\'           => true,
        \'show_admin_column\' => true,
        \'query_var\'         => true,
        \'rewrite\'           => array( \'slug\' => \'genre\' ),
    );

    register_taxonomy( \'genre\', array( \'resources\' ), $args );
}

我想在侧边栏中获取类别列表，所以我在侧边栏中添加了以下代码

<?php    
$taxonomy     = \'genre\';
$orderby      = \'name\'; 
$show_count   = 0;      // 1 for yes, 0 for no
$pad_counts   = 0;      // 1 for yes, 0 for no
$hierarchical = 1;      // 1 for yes, 0 for no
$title        = \'\';

$args = array(
  \'taxonomy\'     => $taxonomy,
  \'orderby\'      => $orderby,
  \'show_count\'   => $show_count,
  \'pad_counts\'   => $pad_counts,
  \'hierarchical\' => $hierarchical,
  \'title_li\'     => $title
);
?>

<ul>
<?php wp_list_categories( $args ); ?>
</ul>

但我只收到“无类别”文本。我的代码有什么问题？