how to set value in session & retrieve?

[Anon]

Dear all,

Access to some of my web pages requires users to logon.

I need to store a value in session after a user logon my web site.

Then I can check this value when user access those pages.

Question:
1. How can i set the value in session?
2 .How can i retrieve the value from session?
3. is it a must to put the session-related code at the very beginning of my php?

Thanks a lot

[fitzbean]

Have you read the PHP docs? All these quesions are answered in them