Teacher, please see how to solve this problem?

Question

Answer 1

Remove inheritance from the parent class parent and change empty to if(USER_ID==''){code}.............Same as the second one, try it

Answer 2

Why are you reporting an error again? Mine is not. There is no error message. How did you do it?

Answer 3

In the class, just use private variables to keep logged in user information,

Answer 4

$this->uid=Session::get('user_id');

Change the USER_ID below to $this->uid

Answer 5

It is not recommended to define constants in the class initialization function. You can try moving the define outside the class.