README

支持（多个）范围请求的文件发送。它能够限制下载速度，并在请求中添加 etag。它相当小巧简单。

安装

使用 composer 添加到 "require" 部分

composer require diversen/http-send-file

使用示例

use Diversen\Sendfile;
$s = new Sendfile();
        
// if you don't set type - we will try to guess it
$s->setContentType('application/epub+zip');
        
// if you don't set disposition (file name user agent will see)
// we will make a file name from file
$s->setContentDisposition('test.epub');

// Expires header. Default is a date in the past
$s->setExpires(3600);
        
// chunks of 40960 bytes per 0.1 secs
// if you don't set this then the values below are the defaults
// approx 40960 bytes per sec
$s->throttle(0.1, 40960);

// file
$file = '/some/dir/test.epub';

// send the file
try {
    $s->send($file);
} catch (\Exception $e) {
    echo $e->getMessage();
}

所以你可以这样做

use Diversen\Sendfile;
$s = new Sendfile();

// file
$file = '/some/dir/test.epub';

// send the file
try {
    $s->send($file);
} catch (\Exception $e) {
    echo $e->getMessage();
}

// but check the headers if it is not
// working as expected as the guessing
// of content-type does not always work
// correctly. 

不发送 content-disposition 头部信息

// without sending content-disposition header
// 2. param = false
try {
    $s->send($file, false);
} catch (\Exception $e) {
    echo $e->getMessage();
}

测试笔记

构建镜像

docker build -t php-apache2 .

运行 docker 镜像

docker run -d -p 8080:80 -v $(pwd):/var/www/html --name test-send-file php-apache2

启用自动加载

composer install

在浏览器中访问： http://localhost:8080/test

或者使用 curl，例如。

curl -v -L -O -C - http://localhost:8080/test/send_large_file.php

致谢

大部分代码是从这里获取（并重写的）

http://w-shadow.com/blog/2007/08/12/how-to-force-file-download-with-php/

这个过程在这里解释得很好

http://www.media-division.com/the-right-way-to-handle-file-downloads-in-php/

MIT © Dennis Iversen