[TYPO3-core] RFC: Bug 331: Support IPv6 addresses

[Michael Stucki]

Franz Holzinger wrote:

>>+     function validIPv6($ip) {
>>+             $uppercaseIP = strtoupper($ip);
>>+
>>+             $regex = "/^(";
>>+             $regex.= "(([\dA-F]{1,4}:){7}[\dA-F]{1,4})|";
>>+             $regex.= "(([\dA-F]{1,4}){1}::([\dA-F]{1,4}:){1,5}[\dA-F]{1,4})|";
>>+             $regex.= "(([\dA-F]{1,4}:){2}:([\dA-F]{1,4}:){1,4}[\dA-F]{1,4})|";
>>+             $regex.= "(([\dA-F]{1,4}:){3}:([\dA-F]{1,4}:){1,3}[\dA-F]{1,4})|";
>>+             $regex.= "(([\dA-F]{1,4}:){4}:([\dA-F]{1,4}:){1,2}[\dA-F]{1,4})|";
>>+             $regex.= "(([\dA-F]{1,4}:){5}:([\dA-F]{1,4}:){0,1}[\dA-F]{1,4})|";
>>+             $regex.= "(::([\dA-F]{1,4}:){0,6}[\dA-F]{1,4})";
>>+             $regex.= ")$/";
>>  
>>
> I think it should be possible to find a more simple regular expression
> for that.

How? Please make a suggestion if you know how to optimize this.

- michael
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