wordpress-shortcode - Wordpress 中以逗号分隔的类别列表

Question

我有这个功能 - 任何建议如何使它返回逗号分隔的列表？

function project_categories_shortcode(){
    global $post;
    $post_id = $post->ID;
    $catName = "";
    foreach((get_the_category($post_id)) as $category){
        $catName .= $category->name;
    }
    return $catName;
}
add_shortcode('project_categories','project_categories_shortcode');

标签： wordpress-shortcode