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<?php require("totalworkingdays.php");
 
 //initialize the class
 $twd = new totalWorkingDays();
 //set Holiday by its name (optional)
 $twd->setHoliday(array('Friday','Saturday'));
 //set Dates as Holiday (optional)
 $twd->setHolidate(array('1st January 2015', '2015-01-12', '21-01-2015'));
 //Calculate to find total working days
 echo $twd->calculate("2015-01-01", "2015-01-31") . " Working days.";
 
 ?>
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