Codeigniter 4 – Session library with Example

Configuring the Session Library

- Open the app/Config/Session.php file.
- Set the driver to the session driver you want to use (e.g. CodeIgniter\Session\Handlers\FileHandler).
- Set the sessionName to the name of the session cookie.

Example:

public $driver = 'CodeIgniter\Session\Handlers\FileHandler';
public $sessionName = 'ci_session';

Starting a Session

- Use the session() method to start a session.

Example:

session();

Setting Session Data

- Use the set() method to set session data.

Example:

session()->set('username', 'john_doe');

Getting Session Data

- Use the get() method to get session data.

Example:

$username = session()->get('username');

Removing Session Data

- Use the remove() method to remove session data.

Example:

session()->remove('username');

Destroying a Session

- Use the destroy() method to destroy a session.

Example:

session()->destroy();

Using Flashdata

- Use the setFlashdata() method to set flashdata.

Example:

session()->setFlashdata('message', 'Hello, World!');

Getting Flashdata

- Use the getFlashdata() method to get flashdata.

Example:

$message = session()->getFlashdata('message');

I hope this helps! Let me know if you have any further questions or need more information.

Note: The Session Library in CodeIgniter 4 provides a simple and intuitive way to manage session data. It helps to improve the security and reliability of your application.