Tools.php
public static function formatDate($value, $format)
    {
        if ($value === null) {
            return false;
        }

        //Make sure we have timestamp
        if (!\is_int($value)) {
            $value = strtotime($value);
        }
        switch ($format) {
            case self::DATE_LONG:
                $inflection = new Inflection();
                $date = date('j', $value) . '. ' . $inflection->inflect(self::getMonthName(date('n', $value)))[2] . ' ' . date('Y', $value);
                break;
            case self::DATE_SHORT:
                $date = date('j. n. Y', $value);
                break;
            case self::DATETIME_LONG:
                $inflection = new Inflection();
                $date =
                    date('j', $value) . '. ' . $inflection->inflect(self::getMonthName(date('n', $value)))[2] . ' ' .
                    date('Y G:i:s', $value);
                break;
            case self::DATETIME_SHORT:
                $date = date('j. n. Y G:i:s', $value);
                break;
            default:
                return false;
        }

        return $date;
    }
public static function formatDate($value, $format)
    {
        if ($value === null) {
            return false;
        }

        //Make sure we have timestamp
        if (!\is_int($value)) {
            $value = strtotime($value);
        }
        switch ($format) {
            case self::DATE_LONG:
                $inflection = new Inflection();
                $date = date('j', $value) . '. ' . $inflection->inflect(self::getMonthName(date('n', $value)))[2] . ' ' . date('Y', $value);
                break;
            case self::DATE_SHORT:
                $date = date('j. n. Y', $value);
                break;
            case self::DATETIME_LONG:
                $inflection = new Inflection();
                $date =
                    date('j', $value) . '. ' . $inflection->inflect(self::getMonthName(date('n', $value)))[2] . ' ' .
                    date('Y G:i:s', $value);
                break;
            case self::DATETIME_SHORT:
                $date = date('j. n. Y G:i:s', $value);
                break;
            default:
                return false;
        }

        return $date;
    }
Format date/datetime

@param string|integer $value Timestamp or date accepted by strtotime()
@param integer $format Date format

@return bool|string Formatted date
@static