The session is a static class, this means it can be used in any controller without needing to be instantiated, the class has an init method if session_start() has not been set then it starts it. This call is in place in (Core/Config.php) so it can already be used with no setup required.
The advantages of using a session class is all sessions are prefixed using the constant setup in the root index.php file, this avoid sessions clashing with other applications on the same domain.
Usage
Setting a session, call Session then ::set pass in the session name followed by its value
Session::set(‘username‘, ‘Dave‘);To retrieve an existing session use the get method:
Session::get(‘username‘);Pull an existing session key and remove it, use the pull method:
Session::pull(‘username‘);Use id to return the session id.
Session::id();Destroy a session key by calling:
Session::destroy(‘mykey‘);To look inside the sessions array, call the display method:
print_r(Session::display());