Online PHP editor | refs for hiPEM

@ 2015-04-29T23:47:28Z

<?php

$regex = "/^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/";

$string = "175.207.24.255";

if (preg_match($regex, $string)){
    echo 'hello';
} else {
    echo 'world';
}