PHP应用：WordPress中给媒体文件添加分类和标签的PHP功能实现

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

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

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

function ludou_create_media_category() {
 $args = array(
  'label' => '媒体分类',
  'hierarchical' => true,
  'show_admin_column' => true,
  'show_ui'   => true,
  'query_var'  => true,
  'rewrite'   => true,
 );
 register_taxonomy( 'attachment_category', 'attachment', $args );
}
add_action( 'init', 'ludou_create_media_category' );