session problem

working on a bought login script and this line I can't figure out the meaning

PHP Code:

<?php ob_start(); ?>
<?php include_once('classes/translate.class.php'); ?>
<?php if (!isset($_SESSION)) session_start(); ?> <---- this logic is not making sense to me.

It says if $_SESSION is not set then start session. My question is if $_SESSION is not set why would you want to start a session.. Shouldn't I start/ continue a session only if that is set.. Other wise any one would be able to log into my protected pages isn't it?

 

If you "bought" this script, it's poorly written. There are plenty of free login scripts out there.

 

http://stackoverflow.com/questions/6249707/check-if-php-session-has-already-started this will help you

 

I am not sure i understand you correctly... but I think sessions are created for each user individually.
So if (!isset($_SESSION)) session_start(); // means if there is no session for this user, then start a session for this particular user.
There are things like session hijacking , but I know next to nothing about them.
hth

 

<?php ob_start(); session_start(); ?>
<?php include_once('classes/translate.class.php'); ?>
Bu şekilde dener misin?

 

You are right. even if you start session `session_start()` then the global $_SESSION will still be empty, unless any value is assigned to it.