& lt？ Server-side programming language (abbreviation of professional hypertext preprocessor)
include(" init . Inc . PHP ")；
get _ referer(false)；
If (empty( $_GET[' file name']) || empty( $_GET[' title']) ||| empty ($ _ get ['directory']))
{
Error_display( t_ ("Missing file download parameters");
} www.2cto.com
$ file _ name = $ _ GET[' filename ']；
$file_download = uploadpath()。 "/".$_GET['dir']。 "/".$ file _ name
$ file _ extension = get _ file _ extension($ file _ name)；
if(strpos($ _ SERVER[' HTTP _ USER _ AGENT ']，" MSIE "))
{
$ file _ save = ut F8 tobig 5($ _ GET[' title '])。 "."。 $ file _ extension
}
other
{
$file_save = $_GET['title']。 "."。 $ file _ extension
}
$ file _ save = ereg _ replace("[\ \/:*？ \ " & lt& gt|]"，" _ "，$ file _ save)；
if ( $file_extension == "php ")
{
Exit ("& ltstrong & gt cannot be used". $file_extension。 "file! & lt/strong >； );
}
$ mime type = get _ file _ mime type($ file _ name)；
if(strpos($ _ SERVER[' HTTP _ USER _ AGENT ']，" MSIE 5 ")| | strpos($ _ SERVER[' HTTP _ USER _ AGENT ']，" Opera 7)))
{
$ mime type = " application/x-download "；
}
ob _ end _ clean()；
header(" Pragma:public ")；
header(" Expires:0 ")；
header(" Cache-Control:must-revalidate，post-check=0，pre-check = 0 ")；
header(" Cache-Control:public ")；
Header ("Content-Description: File Transfer");
Title ("Content Type:". $ mime type)；
Header ("Content-Disposal: Attachment; File name = ". $ file _ save)；
Header ("content-transmission-encoding: binary");
header( "Content-Length:"。 filesize($ file _ download))；
@ readfile(@ $ file _ download)；
& gt