<?php$realname = "zhuast.exe"; //原始文件名$filename = "中文 文件名.exe"; //下载到浏览器的文件名$encoded_filename = urlencode($filename);$encoded_filename = str_replace("+", "%20", $encoded_filename);$ua = $_SERVER["HTTP_USER_AGENT"];if(preg_match("/MSIE/", $ua) || preg_match("/Trident\/7.0/", $ua)){	header(‘Content-Disposition: attachment; filename="‘ . $encoded_filename . ‘"‘);} else if (preg_match("/Firefox/", $ua)) {	header(‘Content-Disposition: attachment; filename*="utf8\‘\‘‘ . $filename . ‘"‘);} else {	header(‘Content-Disposition: attachment; filename="‘ . $filename . ‘"‘);}Header("Content-type: application/octet-stream");header("Content-Transfer-Encoding: binary");header(‘Content-Length:‘.filesize($realname)); //指定下载文件的大小 //将文件内容读取出来并直接输出，以便下载readfile($realname);?>