IT Progamming

• ..

class Item {
    //variable
    protected $name, $price, $qty, $total;
    //constructer dengan parameter
    public function __construct($iName, $iPrice, $iQty) {
        $this->name = $iName;
        $this->price = $iPrice;
        $this->qty = $iQty;
        $this->calculate();
    }
    //method untuk menghitung
    protected function calculate() {
        $this->price = number_format($this->price, 2); //format 2 angka dibelakan koma
        $this->total = number_format(($this->price * $this->qty), 2);//format 2 angka dibelakang koma
    }
    //mencetak string
    public function __toString() {
        return "You ordered ($this->qty) '$this->name'" . ($this->qty == 1 ? "" : "s") .
        " at $$this->price, for a total of: $$this->total.";
    }

}

echo (new Item("Widget 22", 4.90, 2));