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<?php $date = new DateTime('2013-01-01'); $date2 = clone $date; for($i = 1; $i <= 10; $i ++) { $date2->modify("+1 month +3 day"); printf("Date: %s \nExpected : %d\nRecived : %s\n\n", $date2->format("Y-m-d"), $i * 34, $date->diff($date2)->format("%a")); }

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