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<?php $d = new DateTime('2023-03-10'); $diff = $d->diff(new DateTime('2023-03-10 -1 day +1 microsecond') ); echo $diff->days, "\n";
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
0
Output for 8.0.1 - 8.0.30
1

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