有些时候我们已有编辑的文章可能不需要，然后删除文章的时候默认是不会同时删除文章中自带的图片以及附件的。这样势必会导致无用的图片占用服务器资源。有没有一个办法可以在删除文章的同时将这篇文章中包含的图片一并删除，这样可以节省空间。

function delete_post_and_attachments($post_ID) {
global $wpdb;
//删除特色图片
$thumbnails = $wpdb->get_results( \”SELECT * FROM $wpdb->postmeta WHERE meta_key = \’_thumbnail_id\’ AND post_id = $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\’);

如果需要使用的话，只需要将代码添加到当前主题的Functions.php文件中。