<?php
$filename = DT_ROOT.\'/demo.doc\';//协议文件路径
$date=date("Ymd-H:i:m");//构建下载后文件的名称
Header( "Content-type: application/octet-stream ");
Header( "Accept-Ranges: bytes ");
Header( "Accept-Length: " .filesize($filename));//文件的大小
header( "Content-Disposition: attachment; filename= {$date}.doc");
echo file_get_contents($filename);//将文件的内容读入到一个字符串
readfile($filename);//输出文件