使用正则表达式验证 IPv4 和 IPv6 的 PHP 函数
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PHP function to validate IPv4 and IPv6 using regex
提问by chris
I'm needing to create a function for IPv4 and v6 that I cause use local ip's as well.
我需要为 IPv4 和 v6 创建一个函数，我导致它也使用本地 ip。
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.
我所知道的是有效的 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，但直到今天我还没有真正研究它。但我想在未来证明我正在制作的功能，同时暂时保持它有点复古。我不确定 IPv6 的有效范围是什么。
Anyway In general what I am thinking is a function to the extent of
无论如何总的来说，我在想的是一个函数
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;
}
}
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.
我的事情是我对正则表达式很烂，所以我不知道如何编写一个可以验证 v4 或 6 的正则表达式。另外，对上述函数概念进行完整性检查也很好。
回答by Morgon
Check PHP's filter_varfunction. It has a number of validators, including IPv4 and IPv6.
检查PHP的filter_var功能。它有许多验证器，包括 IPv4 和 IPv6。
$isValid = filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4);
// $isValid can be evaluated as boolean, as it's FALSE if validation fails.
回答by Paul
Edit
编辑
Please see Natxet's comment on this answer, and Morgon's answer for a better solution.
请参阅 Natxet 对此答案的评论，以及 Morgon 的答案以获得更好的解决方案。
Original Answer
原答案
You can just use inet_pton. It returns false if the IP is not a valid IPv6 or IPv4:
你可以只使用inet_pton。如果 IP 不是有效的 IPv6 或 IPv4，则返回 false：
function validateIP($ip){
return inet_pton($ip) !== false;
}
回答by Mark Pro Campos
try
尝试
//validates IPV4 and IPV6
$isValid = filter_var($ip, FILTER_VALIDATE_IP));
//validates IPV4
$isValid = filter_var($ip, FILTER_VALIDATE_IP,FILTER_FLAG_IPV4));
//validates IPV6
$isValid = filter_var($ip, FILTER_VALIDATE_IP,FILTER_FLAG_IPV6));
回答by RafaSashi
In addition to Morgon and Mark Pro Campos answers:
除了 Morgon 和 Mark Pro Campos 的回答：
function is_valid_ip($ip='', $ip_type=''){
$isValid=false;
if($ip_type=='ipv4'){
//validates IPV4
$isValid = filter_var($ip, FILTER_VALIDATE_IP,FILTER_FLAG_IPV4);
}
elseif($ip_type=='ipv6'){
//validates IPV6
$isValid = filter_var($ip, FILTER_VALIDATE_IP,FILTER_FLAG_IPV6);
}
else{
//validates IPV4 and IPV6
$isValid = filter_var($ip, FILTER_VALIDATE_IP);
}
if($isValid == $ip){
$isValid=true;
}
return $isValid;
}
Resources
资源
回答by Aeron
Try:
尝试：
IPv4
IPv4
/^((2[0-4]|1\d|[1-9])?\d|25[0-5])(\.(?1)){3}\z/
IPv6
IPv6
/^(((?=(?>.*?(::))(?!.+)))?|([\dA-F]{1,4}(|:(?!$)|$)|))(?4){5}((?4){2}|((2[0-4]|1\d|[1-9])?\d|25[0-5])(\.(?7)){3})\z/i
回答by enygma
You might want to check into filter_var instead. It has a filter for IP addresses (IPv4 and IPv6): http://us.php.net/manual/en/filter.filters.validate.php
您可能想改为检查 filter_var。它有一个 IP 地址过滤器（IPv4 和 IPv6）：http: //us.php.net/manual/en/filter.filters.validate.php
