How to match Ip address with comma separated Ips php

Question

How to match valid ip with (,) separated string.

I have one text box and user can input ip with comma (,) separated.

for that i m checking that the string contain valid ip string.

String should be

192.168.1.1
195.138.124.1,1.154.127.1

Answer 1

As suggested, you will obtain stronger results using build-in filters:

function validateIPs ($input) {
    foreach(explode(',', $input) as $ip)
        if (!filter_var($ip, FILTER_VALIDATE_IP))
            return false;
    return true;
}