How can the EVA principle (Separation of Concerns) be implemented to enhance the readability and maintainability of PHP code?

The EVA principle, also known as Separation of Concerns, can be implemented in PHP code by dividing the code into distinct sections, each responsible for a specific aspect of the application. This helps improve readability and maintainability by keeping related code together and reducing the complexity of individual components. 

// Example of implementing Separation of Concerns in PHP

// Controller
class UserController {
    public function index() {
        $users = User::getAll();
        View::render('users.index', ['users' => $users]);
    }
}

// Model
class User {
    public static function getAll() {
        return DB::query('SELECT * FROM users');
    }
}

// View
class View {
    public static function render($view, $data) {
        // Render the view with the provided data
    }
}

// Database
class DB {
    public static function query($sql) {
        // Execute the SQL query and return the result
    }
}

Keywords

EVA principle Separation of Concerns PHP code readability maintainability

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