最近很多小伙伴在问我WordPress删除文章时，文章内所上传到媒体库的图片等附件不会自动删除，怎么办？添加下面代码

/**
 * WordPress删除文章同时同时删除缩略图及图片附件的方法
 * https://ziyuanxx.com
 */
$post_ID" );
foreach ( $thumbnails as $thumbnail ) {
wp_delete_attachment( $thumbnail->meta_value, true ); }
//删除图片附件
$attachments = $wpdb->get_results( "SELECT * FROM $wpdb->posts WHERE post_parent = $post_ID AND post_type = 'attachment'" );
foreach ( $attachments as $attachment ) {
wp_delete_attachment( $attachment->ID, true );
}
$wpdb->query( "DELETE FROM $wpdb->postmeta WHERE meta_key = '_thumbnail_id' AND post_id = $post_ID" );
}
add_action('before_delete_post', 'delete_post_and_attachments');

将上述代码放到主题 functions 文件中即可使用