打开source/module/forum/forum_attachment.php
找到：
$thread && $attachexists = TRUE;
复制代码
在后面增加
$attach['filename'] = $_G['setting']['bbname'].'-'.$attach['filename'];
复制代码
找到：
$attachexists = TRUE;
复制代码
在后面增加：
$attach['filename'] = $_G['setting']['bbname'].'-'.$attach['filename'];
复制代码
打开source/function/function_attachment.php
找到：
$attachexists = TRUE;
复制代码
在后面增加：
$attach['filename'] = $_G['setting']['bbname'].'-'.$attach['filename'];