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<?php echo dateDifference('2017-09-29', '2018-11-29'); function dateDifference($date_1 , $date_2 , $differenceFormat = '%y Year(s) %m month(s)') { $datetime1 = date_create($date_1); $datetime2 = date_create($date_2); $interval = date_diff($datetime1, $datetime2); return $interval->format($differenceFormat); }

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