Book-page-99

<?php

class Post{
    private $post = "";

    public function __construct($post){
        $this->post = $post;
    }

    public function showPost(){
        echo $this->post. "<br>";
    }
}

class User{
    private $name = "";
    private $posts = [];

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

    public function showName (){
        echo "Last post from ". $this->name .": <br>";
    }

    private function readPosts(){
        //reset array
        unset($this->posts);
        //get post list
        $this->posts[] = new Post("Sample post 1");
        $this->posts[] = new Post("Sample post 2");
        $this->posts[] = new Post("Sample post 3");
    }

    public function getPosts(){
        //read posts
        $this->readPosts();
        //return posts array
        return $this->posts;
    }

    public function getLastPosts(){
        //read posts
        $this->readPosts();
        $count = count($this->posts);
        if ($count > 0) {
            return $this->posts[$count-1];
        }else{
            return NULL;
        }
    }

}

$user = new User("Niton");
$user->showName();

//get user last post
$last_post = $user->getLastPosts();
if ($last_post != null) {
    $last_post->showPost();
}

?>