Step 4: Retrieving the Authenticated User and check IsAuthenticated

You may access the authenticated user via the Auth facade:

use Illuminate\Support\Facades\Auth;
// Get the currently authenticated user...
$user = Auth::user();
// Get the currently authenticated user's ID...
$id = Auth::id();

Determining If The Current User Is Authenticated

To determine if the user is already logged into your application, you may use the check method on the Auth facade, which will return true if the user is authenticated:

use Illuminate\Support\Facades\Auth;
if (Auth::check()) {
    // The user is logged in...
}