Online PHP editor | refs for M0G3F

@ 2017-06-15T11:58:57Z

<?php
function validNumber($number) {
    $number = intval($number);
    return ($number == 1 || $number == 2 || $number == 3 || $number == 4);
}

$xss = '3 /><img src=x onerror="alert(1)"';

var_dump(validNumber($xss));