Hi and thanks for following up!
Did you manage to set up your php sample?
And now I am using this code to check if user is authenticated, but it is still false.
Do you mean that after a user successfully authenticate against Auth0, the condition resolve to false?
Taking into account the exclamation sign before the “$sdk” variable: (if (!$sdk->isAuthenticated()) {…}; , it would be an expected behaviour (the negation of true resolving to false).