I've been trying to determine if a string coming from an html form is a valid IP address, I tried using the regexp's functions, but I can't hit the clown yet, so I'm asking you out if you can give me a hand on here.
I've split the string on 4 strings more separated by ".", then determine if each of those is a number, but... what if the user enters just letters??
Some help would be appreceiated...