Session output question

Two questions: 1) Is there any way to print out active sessions names? I have $_SESSION['SID'], $_SESSION['uid'], $_SESSION['msg'] can I output the literal strings: $_SESSION['SID'] $_SESSION['uid'] $_SESSION['msg'] 2) Is there any way to use a variable in a session name? can I do: $msg="20031022" $_SESSION["$msg.name"] becomes $_SESSION['20031022name'] I have set the session above then called the session output and got what I expected to see; I need to make sure the $msg variable is expanded though. I am trying to create a personalized temporary session. I don't want to use $_GET or $_POST since there will be too much info to be passed on the URL and forms are not involved. Susan