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<?php $a = new DateInterval('PT1S'); $b = DateTime::createFromFormat('Y-m-d H:i:s.v', '2000-1-1 10:10:10.250'); $a->f = 0.5; $b->sub($a); print_r($b->format('Y-m-d H:i:s.v'));
Output for git.master, git.master_jit, rfc.property-hooks
2000-01-01 10:10:08.750

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