Description:
------------
Hi,

I think this is a bug. I am facing problem in handling more than one session in a single page. 


When i set the session_name at first, it's working fine. But if i change the session.name in the next looping, it has changed but the session values doesn't get changed. It's showing the previous session value's only.

Reproduce code:
---------------
foreach ($projects as $key => $val)
{	
     ini_set('session.name',$val);
     session_name($val);
     session_start();
     session_regenerate_id(false);
     echo session_id();
     .
     .
 

     .
     session_write_close();
}

Expected result:
----------------
I need to handle more than one session values in a single page.