修改下列两个文件：
/include/dialog/select_soft_post.php
/include/dialog/select_soft.php
改：
select_soft.php文件第108行后面添加一句话：
$file = mb_convert_encoding($file,‘UTF-8‘,‘GBK‘);
select_soft_post.php文件第73行后面添加一句话：
$fullfilename = mb_convert_encoding($fullfilename,‘GBK‘,‘UTF-8‘);
原文：https://www.cnblogs.com/zyl-930826/p/9969641.html