DateTime: build from timestamp use method setTimestamp()

[h4kuna]

• new feature? no, only update

• BC break? no

• doc PR: nette/docs#??? not need

• keep right timezone

• compact syntax

• little bit faster, let's try

Test how I measure

function measure(callable $test): float
{
	$start = microtime(true);
	for ($i = 0; $i < 1000; ++$i) {
		$test($i);
	}
	return microtime(true) - $start;
}

echo 'Datetime' . PHP_EOL;
echo measure(static function (int $i) {
		return (new DateTime())->setTimestamp($i);
	}) . PHP_EOL;

echo measure(static function (int $i) {
		return (new DateTime('@' . $i))->setTimezone(new \DateTimeZone(date_default_timezone_get()));
	}) . PHP_EOL;

echo 'DatetimeImmutable' . PHP_EOL;
echo measure(static function (int $i) {
		return (new DateTimeImmutable())->setTimestamp($i);
	}) . PHP_EOL;

echo measure(static function (int $i) {
		return (new DateTimeImmutable('@' . $i))->setTimezone(new \DateTimeZone(date_default_timezone_get()));
	}) . PHP_EOL;

[dg]

thanks