What are the best practices for structuring a CMS system using PHP and MySQL?

When structuring a CMS system using PHP and MySQL, it is important to follow best practices to ensure scalability, security, and maintainability. One common approach is to use a modular architecture, separating the presentation layer from the business logic and data access layer. This can be achieved by using a framework like Laravel or Symfony, implementing a MVC (Model-View-Controller) design pattern, and utilizing ORM (Object-Relational Mapping) libraries like Eloquent.

// Example of implementing MVC design pattern in PHP

// Model
class Post {
    public function getAllPosts() {
        // Code to fetch all posts from database
    }
}

// View
class PostView {
    public function displayAllPosts($posts) {
        // Code to display all posts on the front-end
    }
}

// Controller
class PostController {
    public function index() {
        $postModel = new Post();
        $posts = $postModel->getAllPosts();
        
        $postView = new PostView();
        $postView->displayAllPosts($posts);
    }
}

// Routing
$controller = new PostController();
$controller->index();