<?php

// Dengan Instansiasi
class Contoh {
    public static $angka = 1;

    public function halo() {
        return "Halo " . self::$angka++ . " kali. <br>";
    }
}

$obj = new Contoh;
echo $obj->halo();
echo $obj->halo();
echo $obj->halo();

echo "<hr>";

$obj2 = new Contoh;
echo $obj2->halo();
echo $obj2->halo();
echo $obj2->halo();

 ?>