understanding global vars

Anon

Hi, everyone, I just would like you to light some points for me:

1- if I declare a global var inside a php page that includes a normal html at the end, the var will be available to that page but not to other pages that the html page may link?
2 - I have a page called login.php that create 3 important vars, LOGINID, USERID and IPADDR. Those 3 vars are needed in subsequent pages by a checklogin.php to verify the user. How do I keep those 3 variables for being posted to every page on the site even to pages that not need them, just because some link my point to a page that needs to verify the user.
4 - I've tried global but only works in the context a included page...

Anyone?

Anon

Reading other articles, I came up with another question:

If I build one array like
$logger = array ( "USERID" => $USERID,
"LOGINID" => $LOGIND,
"IPADDR" => $IPADDR);
would be very nice to pass just this array along...
so, there's a way to pass this var encoded within
the link? like <a href="somepage?logger...
or only using a form ?

because form would need the user intervention to press the submit button and that is not desireable....

sorry if it sounds stupid... I'm a wannabe Builder C++ programer and all that stuff is brand new for me!

losang

Mauricio,

This is not a stupid question.  It is very good and important.  Check out under the 'articles' seciton session management.  If this as of PHP4 they added what are called sessions.  Once you define a session you can add variables to it and they are preserved on all pages while the user is visiting your site.  This could be used to pass each individual variable, the array of them you mentioned or even classes.  I learned a lot from these articles I mentioned.

Best of luck,

losang

Anon

Thank you !! I appreciate your prompt help.
I am going dig the articles rigth now!