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<?php $datetime1 = new DateTime('2017-09-01 23:00:00'); $datetime2 = new DateTime('2017-09-02 01:34:00'); $hours = round(($datetime2->getTimestamp() - $datetime1->getTimestamp()) / 3600 , 2); echo $hours; //2.57
Output for git.master, git.master_jit, rfc.property-hooks
2.57

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