In the previous login video, the teacher used the session to save only the username and password, but later took out other values from the session when updating the administrator information. I opened the session file and saw no other fields except username and password. I feel like something is wrong here
How did you solve your problem? I also have this problem. Neither is_update nor id can be found.
Just save the entire admin table. The only ones saved before were the username and password sent via the form