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<?php $interval = new DateInterval('PT1S'); $interval->f = 500000; var_dump(date_create_immutable('2017-03-15')->add($interval));
Output for 7.3.12 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
object(DateTimeImmutable)#3 (3) { ["date"]=> string(26) "2017-03-20 18:53:21.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 object(DateTimeImmutable)#3 (3) { ["date"]=> string(26) "2017-03-20 18:53:21.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }
Output for 7.3.32 - 7.3.33, 8.0.13
object(DateTimeImmutable)#3 (3) { ["date"]=> string(26) "2017-03-20 18:53:21.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" }
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.11
object(DateTimeImmutable)#3 (3) { ["date"]=> string(31) "2017-03-15 00:00:03.-2147483648" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }
Output for 5.6.38, 7.0.0 - 7.0.33
object(DateTimeImmutable)#3 (3) { ["date"]=> string(26) "2017-03-15 00:00:01.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }

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