Anonymous

#!/usr/bin/env php<?php$regex = "/^([\w\d]+([-][\w\d]+)*)(\.[\w\d]+([-][\w\d]+)*)*$/";$urls = array(    "net.venge.monotone" => 1,    "-net.venge.monotone" => 0,    "_net.venge.monotone" => 1,    "n_t.venge.monotone" => 1,    "n-t.venge._monotone" => 1,    "n-_.venge.monotone" => 1,    "n-t.ve_nge.monotone" => 1,    "1.2.3" => 1,    "1_" => 1,    "n" => 1,    "0_6" => 1,    "net.venge.6_0-.monotone" => 0,);foreach ($urls as $uri => $exp){    echo "$uri, expected $exp, got ".preg_match($regex, $uri)."\n";}