Checking user logged in or not

[samser_m]

Hi,
1) I want to add a php file with some fields which user should fill up and save on our database.

2) I have to check whether user is currently logged in or not. If yes then user will be able to see the php page otherwise not.

3) I have to retrieve userid and email from "user" table

4) Finally all the details with userid, email will be saved on a new table.

Thanks in advance.

Regards,
Samser