Where is the best place to store sessions?

Question

PHP

Hello.
Tell where it is better to store sessions. On the server or at the user's computer?
For example, a user visits the site, I encrypt his password and save it on the user's local computer along with the login. Is it correct?
I just heard about another way:
The user enters the site, I save a cookie with some code on his computer, and the session itself is saved to a file on the server. The next time I log in using this code, I can find the session and load the user data from there. Correctly?
Thank you.

Answer 1

Sessions must be stored on the server. The user has only a cookie by which he is identified: prntscr.com/c4xhxi