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<?php $dt = new DateTimeImmutable('-2 hours'); $newDt = $dt->modify('+2 hours'); var_dump($dt->format('U')); var_dump($newDt->format('U')); var_dump($dt === $newDt);
Output for git.master, git.master_jit, rfc.property-hooks
string(10) "1404552124" string(10) "1404559324" bool(false)

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