store a date in the users' session. check to see if there is a date in the session. if there is then make sure it's a week old. if it is a week old or there isn't a date in the session then display content on the page. and set a new time in the session.

CriticaI wrote store a date in the users' session. check to see if there is a date in the session. if there is then make sure it's a week old. if it is a week old or there isn't a date in the session then display content on the page. and set a new time in the session.

The user could clear their cookies, and hence any association with that particular session, and then keep viewing the page.

A more appropriate solution would be to make the page only visible by users who are logged in. Then add an extra table to log when any given user has viewed the page.
| id | user_id | datetime |

Incorrect. If the session info (token and last login date) are stored in the DB, merely compare the current date against the last login date. If it's less than a week, show error message.

You are thinking about client-side cookies vs. server-side sessions.

Apologies, I misread Critical's post. Specificially the point on "or there isn't a date in the session".

I wasn't getting muddled up; I just misread Critical's post. The session ID is stored in a cookie which associates the user with the session and so clearing cookies will dissociates the user.