php - Cloudflare 内容类型

Question

我刚开始使用 CloudFlare，但遇到了它的 CDN 服务问题。我希望我的脚本发回 Content-Type header 。我曾尝试使用页面规则，但一点帮助也没有。我只想获取内容长度!

PHP 脚本:

<?php
    ob_start();
    ob_start('ob_gzhandler');

    $file = $_SERVER['DOCUMENT_ROOT'] . "/MyPath.txt"; //Path to your *.txt file 
    $contents = file($file); 
    $string = implode($contents); 
    echo $string;
    ob_end_flush();  // The ob_gzhandler one
    header('Content-Length: '.ob_get_length());
    ob_end_flush();  // The main one

?>

CloudFlare 的响应 header :

HTTP/1.1 200 OK
Date: Wed, 19 Aug 2015 17:29:33 GMT
Content-Type: text/html
Connection: close
Set-Cookie: __cfduid=d47ae5690afc8da407e829810c558510b1440005373; expires=Thu, 1
8-Aug-16 17:29:33 GMT; path=/; domain=.mysite.com; HttpOnly
X-Powered-By: PHP/5.5.28
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Vary: Accept-Encoding
Set-Cookie: PHPSESSID=f7b9cb0b5e9bf7e9af1d732e566a1e24; path=/
Server: cloudflare-nginx
CF-RAY: 218794cf540e0436-ORD

本地主机 header :

HTTP/1.1 200 OK
Date: Wed, 19 Aug 2015 17:39:10 GMT
Server: Apache/2.4.9 (Win64) PHP/5.5.12
X-Powered-By: PHP/5.5.12
Set-Cookie: PHPSESSID=s3hdkbh4vd2rj5ieqocafebju6; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Vary: Accept-Encoding
Content-Length: 135680
Connection: close
Content-Type: text/html

Answer 1

您需要添加文件扩展名以便缓存脚本的输出，或者使用页面规则强制缓存资源。这将导致文件不使用分块编码发送，这将启用内容长度 header 。

来自CloudFlare help :

The solution/workaround - If you add a file extension to the resource so that it matches our list of supported file extensions so http://example.com/test/dynamicallyimage.php?size=3 becomes http://example.com/dynamicallyimage.jpg CloudFlare's system will then send it with the content-length header as long as you're also sending HTTP 1.0 as the protocol.

Alternatively you could use a PageRule and use the "custom caching" option to select "cache everything" which will force our system to cache http://example.com/test/dynamicallyimage.php?size=3 even though it doesn't have one of our usual file extensions -- in this case the content-length will also be preserved.