public static function validateEqual(IControl $control, $arg)
{
$value = $control->getValue();
foreach (is_array($value) ? $value : [$value] as $val) {
foreach (is_array($arg) ? $arg : [$arg] as $item) {
if ((string) $val === (string) $item) {
continue 2;
}
}
return FALSE;
}
return TRUE;
}