WordPress禁用附件评论

add_filter( 'comments_open', 'so_disable_attachment_pages_comments', 10 , 2 );
function so_disable_attachment_pages_comments( $open, $post_id ) {
    $post = get_post( $post_id );
    if ( 'attachment' == $post->post_type )
            $open = false;
    return $open;
}