What are the potential issues with structuring PHP code to handle database updates and data display in separate blocks?

Separating database updates and data display in separate blocks can lead to code duplication, maintenance issues, and potential inconsistencies between the data being updated and displayed. To solve this, consider using a design pattern like MVC (Model-View-Controller) to separate concerns and ensure a clear separation between data manipulation and presentation logic. 

// Example of implementing MVC pattern in PHP

// Model (handle database updates)
class UserModel {
    public function updateUser($userId, $userData) {
        // Database update logic here
    }
}

// View (data display)
class UserView {
    public function displayUser($userData) {
        // Data display logic here
    }
}

// Controller (handle user input and interaction between Model and View)
class UserController {
    private $model;
    private $view;

    public function __construct(UserModel $model, UserView $view) {
        $this->model = $model;
        $this->view = $view;
    }

    public function updateUser($userId, $userData) {
        $this->model->updateUser($userId, $userData);
        $this->view->displayUser($userData);
    }
}

// Example of using the MVC pattern
$model = new UserModel();
$view = new UserView();
$controller = new UserController($model, $view);

$userId = 1;
$userData = ['name' => 'John Doe', 'email' => 'john.doe@example.com'];

$controller->updateUser($userId, $userData);

Keywords

PHP database updates data display code structure separation of concerns

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