PHP函数使用正则表达式验证IPv4和IPv6 [英] PHP function to validate IPv4 and IPv6 using regex

问题描述

我需要为IPv4和v6创建一个函数，该函数也导致我使用本地ip.

I'm needing to create a function for IPv4 and v6 that I cause use local ip's as well.

我知道的是有效的IPv4范围从0.0.0.0到255.255.255.255 我对IPv6的了解是有限的，尽管它已经存在了一段时间，直到今天我才真正对其进行了很多研究.但是我想将来证明我正在做的功能，同时暂时保留它的复古性.我不确定IPv6的有效范围是多少.

What I know is a valid IPv4 ranges from 0.0.0.0 to 255.255.255.255 What I know of IPv6 is limited however as despite it being around for a while I haven't really looked much into it til today. But I want to future proof the function I am making a little bit while keeping it a bit retro for the time being. I'm not sure what the valid ranges are for IPv6.

无论如何，总的来说，我在想什么是一个函数

Anyway In general what I am thinking is a function to the extent of

function validateIP($ip, $vSix = NULL)
{
    if($vSix !== NULL)
    {
      if(preg_match([regex-to-validate-ipv6], $ip))
      {
        return true;
      }
      else
      {
        return false;
      }
    }

    if(preg_match([regex-to-validate-ipv4], $ip))
    {
      return true;
    }
    else
    {
      return false;
    }
}

我的事情是我对regex很烂，所以我不知道如何编写一个可以验证v4或6的代码.此外，对上述函数概念进行健全性检查也很好.

my thing is I suck with regex so I have no idea how to write one that will validate v4 or 6. Also a sanity check on the above function concept would be nice as well.

推荐答案

编辑

请参阅Natxet关于此答案的评论，以及Morgon的答案以寻求更好的解决方案.

Please see Natxet's comment on this answer, and Morgon's answer for a better solution.

原始答案

您可以只使用 inet_pton .如果IP不是有效的IPv6或IPv4，则返回false:

You can just use inet_pton. It returns false if the IP is not a valid IPv6 or IPv4:

function validateIP($ip){
    return inet_pton($ip) !== false;
}

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