src/Date.php
private static function formatDate($datetime, string $format): ?string
	{
		if (empty($datetime)) {
			return null;
		} elseif ($datetime instanceof DateTimeInterface) {
			$date = $datetime;
		} else {
			$date = DateTime::createFromFormat('U', (string) $datetime);
		}
		return $date->format($format);
	}
private static function formatDate($datetime, string $format): ?string
	{
		if (empty($datetime)) {
			return null;
		} elseif ($datetime instanceof DateTimeInterface) {
			$date = $datetime;
		} else {
			$date = DateTime::createFromFormat('U', (string) $datetime);
		}
		return $date->format($format);
	}
Vrati lokalizovany format data
@param DateTimeInterface|int $datetime
@param string $format
@return string|null