Cookbook brief intro to OOP error importing classes

1

I am working through the Cookbook’s Brief intro to Object Oriented Programming and am stuck at the section Importing Classes.

When I enter the given code:

<?php
// make PHP display errors on screen
ini_set('display_errors', 1);
// require the book class
require_once __DIR__ . '/Book.php';
require_once __DIR__ . '/Ebook.php';

use Cookbook\Books\Book;
use Cookbook\Books\Ebook;

$book  = new Book(…);
$ebook = new Ebook(…);
//…

I get in the browser:

Fatal error : Uncaught Error: Undefined constant “…” in …/book/index.php:11 Stack trace: #0 {main} thrown in …/book/index.php on line 11

Line 11 is:

$book  = new Book(…);

I’m not sure what to do to resolve this.

Thank you!

2

You should not use the three dots (...) literally in your code. They are representing something what was written before.

3

Of course…duh!

I had copied the code directly from the Cookbook write-up and didn’t realize that the ellipses were stand-ins for the author and title strings, simply illustrating that the original method of adding a book or ebook could be used with the imported classes.

Beginner’s mistake. Appreciate the help!