文件下载

1.text.txt

huahua
huahua
huahua

2.download.html

<a href="download.php?filename=./text.txt">文件下载</a>

3.download.php

<?php
//获取要下载的文件名
$filename = $_GET['filename'];
//设置头信息
header('Content-Disposition:attachment;filename=' . basename($filename));
header('Content-Length:' . filesize($filename));
//清理缓存
ob_clean();
//读取文件并写入到输出缓冲
readfile($filename);