Online PHP editor | refs for iqSol

@ 2014-07-07T20:19:59Z

<?php
$usernameCheck = 'dani';

function checkUsername($username) {

    return (bool)!preg_match('/[^a-z_\-0-9]/i', $username);
}

if (false === checkUsername($usernameCheck)) { echo 'ok'; } else { echo 'false';}