PHP 正则表达式 轻松验证IPV6_PHP

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Release: 2016-06-01 12:20:49
Original
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正则表达式IPv6

 IPV6的时代快要到来了,发一个验证IPV6地址是否合法的正则。

 


// literally from the ABNF in rfc3986 (thanks to 'WCP')
function validateIPv6($IP)
{
return preg_match('/\A
(?:
(?:
(?:[a-f0-9]{1,4}:){6}
|
::(?:[a-f0-9]{1,4}:){5}
|
(?:[a-f0-9]{1,4})?::(?:[a-f0-9]{1,4}:){4}
|
(?:(?:[a-f0-9]{1,4}:){0,1}[a-f0-9]{1,4})?::(?:[a-f0-9]{1,4}:){3}
|
(?:(?:[a-f0-9]{1,4}:){0,2}[a-f0-9]{1,4})?::(?:[a-f0-9]{1,4}:){2}
|
(?:(?:[a-f0-9]{1,4}:){0,3}[a-f0-9]{1,4})?::[a-f0-9]{1,4}:
|
(?:(?:[a-f0-9]{1,4}:){0,4}[a-f0-9]{1,4})?::
)
(?:
[a-f0-9]{1,4}:[a-f0-9]{1,4}
|
(?:(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.){3}
(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])
)
|
(?:
(?:(?:[a-f0-9]{1,4}:){0,5}[a-f0-9]{1,4})?::[a-f0-9]{1,4}
|
(?:(?:[a-f0-9]{1,4}:){0,6}[a-f0-9]{1,4})?::
)
)\Z/ix',
$IP
);
}
?>

 

source:php.cn
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