For example, To store data in the session, you will typically use the putmethod or the session helper:
// Via a request instance...
$request->session()->put('key', 'value');
or
// Via the global helper...
session(['key' => 'value']);
for retrieving an item from the session, you can use get :
$value = $request->session()->get('key', 'default value');
or global session helper :
$value = session('key', 'default value');
To determine if an item is present in the session, you may use the has method:
if ($request->session()->has('users')) {
//
}