// Setting a success message session_start(); $_SESSION['flash'] = [ 'type' => 'success', 'message' => 'Your account has been created successfully!' ];
// Setting an error message session_start(); $_SESSION['flash'] = [ 'type' => 'error', 'message' => 'Invalid email address or password!' ];In the above examples, we start a session and set a flash message in the $_SESSION['flash'] variable. The flash message has two keys: - 'type' - This specifies the type of message (success or error). - 'message' - This is the actual message that will be displayed to the user. We can then retrieve this message on the next page load and display it to the user. To determine the package library for the setFlash method, we need to know the context in which it is being used. The setFlash method is commonly used in PHP frameworks like Laravel, CodeIgniter, and Symfony, among others. However, it can also be implemented manually in any PHP application using sessions.