php实现文件下载功能的简单例子

<a href="get.php?file=help&type=doc">nginx中文手册下载</a>

<?php
/**
* php实现文件下载
* edit www.jb200.com
*/
if (!isset(GET["file"]) || !isset(GET["type"])) { 
print "no file selsect"; exit();
}

$file = GET["file"].".".GET["type"];
if (@$fp = fopen($file,'r')){
 header ("Content-type: octet/stream");
 if (strstr(SERVER["HTTP_USER_AGENT"], "MSIE")){
 header("Content-Disposition: filename=".mb_convert_encoding('nginx中文手册.doc','GB2312','UTF-8')); // For IE
 }else{
 header("Content-Disposition: attachment; filename=".mb_convert_encoding('nginx中文手册.doc','GB2312','UTF-8')); // For Other browsers 
} while(!@feof($fp)){
 echo fread($fp,1024); 
}
//@fpassthru($fp);
 exit();
} else{
 print "sorry，file not exists!";
}
?>