<?php

class Produk {
    public $judul = "judul",
           $penulis = "penulis",
           $penerbit = "penerbit",
           $harga = 0;

    public function getLabel() {
        return "$this->penulis, $this->penerbit";
    }
}

$produk3 = new Produk();
$produk3->judul = "Naruto";
$produk3->penulis = "Masashi Kishimoto";
$produk3->penerbit = "Shonen Jump";
$produk3->harga = 30000;

echo "Komik : $produk3->penulis, $produk3->penerbit";
echo "<br>";
echo $produk3->getLabel();

echo"<hr>";

$produk4 = new Produk();
$produk4->judul = "Uncharted";
$produk4->penulis = "Neil Druckmann";
$produk4->penerbit = "Sony Computer";
$produk4->harga = 250000;

echo "Komik : " . $produk3->getLabel();
echo "<br>";
echo "Game : " . $produk4->getLabel();