Overtrue\Validation\Validator::getDateTimeWithOptionalFormat PHP Method

    protected function getDateTimeWithOptionalFormat($format, $value)
    {
        $date = DateTime::createFromFormat($format, $value);
        if ($date) {
            return $date;
        }
        try {
            return new DateTime($value);
        } catch (\Exception $e) {
            return;
        }
    }