wordpress媒体库增加分类和标签

function add_categories_tags_to_attachments ( )  {
  register_taxonomy_for_object_type (  'category' ,  'attachment'  ) ;
  register_taxonomy_for_object_type (  'post_tag' ,  'attachment'  ) ;
}
add_action (  'init'  ,  'add_categories_tags_to_attachments'  ) ;