What are some best practices for organizing PHP code in a website with multiple functionalities like a guestbook and photo album?

When organizing PHP code for a website with multiple functionalities like a guestbook and photo album, it's important to separate concerns and maintain a clear structure. One way to achieve this is by using a modular approach, where each functionality is encapsulated in its own class or file. This helps improve code readability, maintainability, and reusability. Example:

// Guestbook functionality
class Guestbook {
    public function addEntry($name, $message) {
        // Add entry logic here
    }

    public function getEntries() {
        // Get entries logic here
    }
}

// Photo album functionality
class PhotoAlbum {
    public function uploadPhoto($photo) {
        // Upload photo logic here
    }

    public function getPhotos() {
        // Get photos logic here
    }
}