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<?php date_default_timezone_set('Europe/Moscow'); $datetime1 = new DateTime('13-03-01'); $datetime2 = new DateTime('13-04-01'); $datetime3 = new DateTime('13-03-02'); $datetime4 = new DateTime('13-04-02'); $interval = $datetime2->diff($datetime1); echo $interval->format('%m month, %d days'), '<br>'; //1 month, 3 days $interval = $datetime4->diff($datetime3); echo $interval->format('%m month, %d days'); //1 month, 0 days

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