What are some recommended tutorials or books for object-oriented website design in PHP?

When designing a website using object-oriented programming in PHP, it is important to understand the principles of OOP such as classes, objects, inheritance, and encapsulation. Some recommended tutorials for learning OOP website design in PHP include the official PHP documentation on OOP, tutorials on websites like W3Schools and PHP.net, and books like "PHP Objects, Patterns, and Practice" by Matt Zandstra.

<?php
// Example of a simple class in PHP
class User {
  public $name;
  public $email;

  public function __construct($name, $email) {
    $this->name = $name;
    $this->email = $email;
  }

  public function getInfo() {
    return "Name: " . $this->name . ", Email: " . $this->email;
  }
}

$user1 = new User("John Doe", "john@example.com");
echo $user1->getInfo();
?>