Workshop

The workshop is designed to help you anticipate possible questions, review what you've learned, and begin learning how to put your knowledge into practice.

Quiz

1.	Which function would you use to start or resume a session within a PHP script?
2.	Which function contains the current session's ID?
3.	How would you end a session and erase all traces of it for future visits?
4.	What does the SID constant return?

Answers

1.	You can start a session by using the session_start() function within your script.
2.	You can access the session's ID by using the session_id() function.
3.	The session_destroy() function removes all traces of a session for future requests.
4.	If cookies are not available, the SID constant contains a name/value pair that can be incorporated in a query string. It will pass the session ID from script request to script request.

Activity

Create a script that uses session functions to remember which pages in your environment the user has visited. Provide the user with a list of links on each page to make it easy for her to retrace her steps.