Newbe To Php And Session Usage

[atljj]

Your book was a Great Find, thanks to your hard work, I am making great progress as well now...

 

My question is probably a simple one but here goes:

 

Are sessions relative to the server time connected? By that I mean, are they separated from all other users that may be using my website at the same time? Or do they overlap with all users and therefore do I have to establish an unique session set for each person who signs in to the site. I am hoping that the first choice is right (easier) and all I have to do is start every web page with:

 

<?PHP
ob_start();
isset($_SESSION) || session_start();

...

 

and the server assigns each user a unique id to keep all other sessions apart?  

 

In the session_start() am I supposed to put something in-between the () such as my own set-name, or is that always empty? Does it allow for a parameter and if so what goes there?

 

Thanks in advance for any words of wisdom!!! 

[HartleySan]

Hello, atljj, and welcome to the forums.

 

To answer your question, your first assumption is correct. The server automatically assigns a unique session ID to each user, thus keeping them all separate, even if they connect at the same time. That ID is stored in a cookie file on the user's local machine, so you don't have to worry about crossing anything up between users.

 

Also, session_start does not require any arguments, meaning that the parentheses are always empty.

Happy coding, and feel free to ask any other questions you may have.

[atljj]

Thanks for your quick response. Great to know as I can use session to pass page info around and make my life simple which is good.

 

Thx again for the help...