php文件下载

html

<a href="./1.php?name=1.jpg">1.jpg</a>
<a href="./1.php?name=2.jpg">2.jpg</a>
<a href="./1.php?name=3.jpg">3.jpg</a>
<a href="./1.php?name=1.png">1.png</a>

php

<?php
header("content-type:text/html;chatset=utf-8");
date_default_timezone_set("PRC");

$name = $_GET['name'];
$ext = pathinfo($name,PATHINFO_EXTENSION);
//限制类型
$type = array(
    'jpg'=>'image/jpeg',
    'jpeg' => 'image/jpeg',
    'png' => 'image/png',
    'gif' => 'image/gif',
    'txt' => 'text/plain',
    'html' => 'text/html',
    'php' => 'text/plain',
    'zip' => 'application/zip',
);
//下载设定
header('Content-Type:'.$type[$ext]);
//文件名
header('Content-Disposition: attachment;filename="'.$name.'"');
header('Content-Cength:'.filesize('./img/'.$name));
//下载资源位置
readfile('./img'.$name);