<?php require_once './src/book.php'; require_once './src/ebook.php'; $book1 = new Book("Tytul", "Autor", 54.66, 54345654); $book2 = new Book("Tytul2", "Autor2", 58.66, 54945654); $book1->printBookInfo(); $book2->printBookInfo(); $book1 = new Ebook("Tytul", "Autor", 54.66, 54345654, 300); $book1->printBookInfo();