Valitron\Validator::validateDateBefore PHP Method

    protected function validateDateBefore($field, $value, $params)
    {
        $vtime = $value instanceof \DateTime ? $value->getTimestamp() : strtotime($value);
        $ptime = $params[0] instanceof \DateTime ? $params[0]->getTimestamp() : strtotime($params[0]);
        return $vtime < $ptime;
    }