Are there any best practices to follow when working with OOP in PHP?

When working with OOP in PHP, it is important to follow best practices to ensure clean and maintainable code. Some key practices include using proper naming conventions for classes, methods, and properties, following the single responsibility principle to ensure classes have a single purpose, and using access modifiers to control the visibility of class members.

class User {
    private $id;
    private $username;

    public function __construct($id, $username) {
        $this->id = $id;
        $this->username = $username;
    }

    public function getUsername() {
        return $this->username;
    }

    public function setUsername($username) {
        $this->username = $username;
    }
}