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<?php $d = new \DateTimeImmutable(); var_dump($d) ;var_dump($d->modify('+2 years'));
based on 75CRe

Shows result from various feature-branches currently under review from the php developers. Contact me to have additional branches featured.

Output for branch php-master
object(DateTimeImmutable)#1 (3) { ["date"]=> string(26) "2019-12-03 08:39:45.000262" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } object(DateTimeImmutable)#2 (3) { ["date"]=> string(26) "2021-12-03 08:39:45.000262" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }
Output for branch php-master+opcache
object(DateTimeImmutable)#1 (3) { ["date"]=> string(26) "2019-12-03 08:39:45.000284" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } object(DateTimeImmutable)#2 (3) { ["date"]=> string(26) "2021-12-03 08:39:45.000284" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page