> I think it'd be hard to verify the range with a regex. ip2long and long2ip
> do not validate. So, an option would be to write your own little function
> that splits the $ip on the period, verifies there are 4 parts, then checks
> that each part is between 1 and 255 inclusive.

My other post on the subject notwithstanding, I agree.

When I get time/when I get a round tuit, I'd like to do a performance test
on the (short) IP RegEx against what you have outlined:

explode against "."
run resultant array through 0-255 validation function
- and still have the semantic issues of, etc...

Meantime, will sit here whistling and quietly muttering into my beard (and
dreaming of tuits),

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