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<?php $today = new DateTime('today'); $delta = new DateInterval('PT0S'); $delta->f = 0.0001; $expectedLower = (clone $today) ->setTimezone(new DateTimeZone('UTC')) ->sub($delta); var_dump($expectedLower);
Output for 8.1.0 - 8.1.6
object(DateTime)#3 (3) { ["date"]=> string(26) "2022-03-29 22:00:00.999900" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" }
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.7 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
object(DateTime)#3 (3) { ["date"]=> string(26) "2022-03-29 21:59:59.999900" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" }

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