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<?php $date1 = new DateTime("1980-11-21 00:00:00"); $date2 = new DateTime("1981-11-20 00:00:00"); var_dump($date1->diff($date2,true)->days); var_dump($date2->diff($date1,true)->days); var_dump($date1->diff($date2,true)->format("%Y-%m-%d %H:%i:%s")); var_dump($date2->diff($date1,true)->format("%Y-%m-%d %H:%i:%s"));
Output for git.master, git.master_jit, rfc.property-hooks
int(364) int(364) string(15) "00-11-30 00:0:0" string(15) "00-11-29 00:0:0"

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