Session problem

[eluser]überfuzz[/eluser]
[quote author="shinokada" date="1257445854"]There is nothing in Session array at the beginning.
Is it a problem? If so, how can I solve it?

Thanks for your reply.[/quote]
Well if you're going to use it, it is a problem.

I didn't look throw your code, but from the top of my head, I'd consider two things.

Code:

if(isset($_SESSION['some_key'])){ /* do stuff */ } else {/* don't do stuff */}
//or
if(!isset($_SESSION['some_key'])) {$_SESSION['some_key'] = 'default';}