php create date range function

    function createDateRange($startDate, $endDate, $format = "Y-m-d")
    {
        $begin = new \DateTime($startDate);
        $end = new \DateTime($endDate);

        $interval = new \DateInterval('P1D'); // 1 Day
        $dateRange = new \DatePeriod($begin, $interval, $end->modify('+1 day'));
        $range = [];
        foreach ($dateRange as $date) {
            $day_num = $date->format("N");
            if($day_num < 6){
                $range[] = $date->format($format);
            }
        }

        return $range;
    }