Creating a simple class file using PHP

Here i will just demonstrate how to create simple php scripts using classes.First we should create a CLASS file

<?php class CarCounter{var $cars = 0;var $weightPerCar = 500.0; function add($n = 1){$this->cars = $this->cars + $n;} function totalWeight(){return $this->cars * $this->weightPerCar;}}?>

i named this class file as class.php  Now i am going to create a index page

<?php        include "class.php";        $cars = new CarCounter;         $cars->cars = 5;      print "There are " . $cars->cars . " cars<br />";       $cars->add(10);      print "There are " . $cars->cars . " cars<br />";      print "Total weight = " . $cars->totalWeight() . " kg<br />";       $cars->weightPerCar = 700.0;             print "With the new weight per car, your total weight is now " . $cars->totalWeight() . " kg";      ?>

I named it INDEX.PHP Check the file in server and see what happens

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