How can the EVA principle and Affenformular concept help improve PHP code organization?

The EVA principle emphasizes the importance of separating concerns in code, ensuring that each component has a single responsibility. The Affenformular concept suggests using a structured and consistent naming convention for variables, functions, and classes to improve code readability and maintainability.

// Example of applying EVA principle and Affenformular concept in PHP code organization

class User {
    private $userId;
    private $username;
    private $email;

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

    public function getUserId() {
        return $this->userId;
    }

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

    public function getEmail() {
        return $this->email;
    }
}