Get number of working days between two dates in PHP [duplicate]

PHP Snippet 1:

echo getWorkingDays("2022-04-01","2022-04-30",6);

function getWorkingDays($startDate,$endDate,$working_days_in_a_week){


            // do strtotime calculations just once
            $endDate = strtotime($endDate);
            $startDate = strtotime($startDate);
            $start_day = date("N", $startDate);

            //The total number of days between the two dates. We compute the no. of seconds and divide it to 60*60*24
            //We add one to inlude both dates in the interval.
            $days = ($endDate - $startDate) / 86400 + 1;
            $fullweeks = floor($days/7);
            $restofdays = $days%7;
            
            $workingDays=$fullweeks*$working_days_in_a_week;
            
            for($x=0;$x<$restofdays;$x++){
                if((($start_day+$x)%7)<=$working_days_in_a_week)$workingDays++;
            }
            return $workingDays;
        }