1 办法一：

 2 header（Content-Description: File Transfer）;

 3 header（Content-Type: application/octet-stream）;

 4 header（Content-Disposition: attachment; filename=.basename（￥filepath））;

 5 header（Content-Transfer-Encoding: binary）;

 6 header（Expires: 0′）;

 7 header（Cache-Control: must-revalidate， post-check=0， pre-check=0′）;

 8 header（Pragma: public）;

 9 header（Content-Length:  . filesize（￥filepath））;

10 readfile（￥file_path）;

11 

12 办法二：

13 ￥fileinfo = pathinfo（￥filename）;

14 header（Content-type: application/x-.￥fileinfo[extension]）;

15 header（Content-Disposition: attachment; filename=.￥fileinfo[basename]）;

16 header（Content-Length: .filesize（￥filename））;

17 readfile（￥thefile）;

18 exit（）;