获取cloudflare背后的访客ipv4 [英] Get visitors ipv4 behind cloudflare

问题描述

我只是想获得访客IP地址。一切都很好，但是一个用户只给了我IPv6。
这是我可以给您的代码，此外，我刚刚安装了cloudflare apache2 Mod。

I just have the problem that I want to get the visitors IP Address. Everythings fine but one user just give me the IPv6. This is the code I can give you, moreover I just had installed the cloudflare apache2 Mod.

 $_SERVER['REMOTE_ADDR'] = $_SERVER["HTTP_CF_CONNECTING_IP"] ? $_SERVER["HTTP_CF_CONNECTING_IP"] : $_SERVER["REMOTE_ADDR"];
 $ip = $_SERVER['REMOTE_ADDR'];

 if(isset($_SERVER['HTTP_CF_CONNECTING_IP'])){
     $ip = $_SERVER['HTTP_CF_CONNECTING_IP'];
 }

推荐答案

唯一的方法将通过以下方式禁用CloudFlare中的IPv6支持：

The only way to do this would be to disable IPv6 support in CloudFlare by:

1）在DNS中删除所有AAAA记录（仅保留A记录）。
2）在CloudFlare仪表板上进入网络并关闭 IPv6兼容性。

1) In DNS removing all AAAA records (leaving only A records). 2) Going into the Network on the CloudFlare dashboard and turning off "IPv6 Compatibility".

我不建议这样做；您可能很快就会遇到无法连接到您网站的人。相反，最好是确保您的平台完全支持IPv6。

I would not recommend this though; you might soon find yourself with people unable to connect to your site. Instead it is a better idea to make sure your platform fully supports IPv6.

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