WordPress删除文章后同时自动删除文章内的媒体图片附件。

在删除WordPress文章之后，文章内的附件媒体图片往往都还存在你的空间或服务器上，时间久了会占用很大的磁盘空间。

那么我们怎么样才能在删除WordPress文章，附件也一并删除呢？

首先你得先进入你的主题目录，并找到functions.php插入如下代码即可自动删除文章内的媒体图片附件：

/* 删除文章时删除图片附件 */  
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');