Session logged question

[elmas156]

Correct me if I'm wrong but I got some help on here a few weeks ago and I was looking at this code that was suggested to me:

if ($_SESSION['logged'] != 1 || $email == "") { // There was no session found!
$_SESSION['email'] = $email;
echo "<meta http-equiv=\"refresh\" CONTENT=\"0; URL=index.php\">"; // Goes to login page.
exit(); // Stops the rest of the script.

and it doesn't make sense to have the $_SESSION['email'] part in there because if the session isn't logged or set, it wouldn't be able to pass the $email variable through the session anyway, right?  I've been using it on several pages the way it is and it works fine, but isn't this session variable not even not doing anything at all?  I'm a little confused about this so if anyone could make sense of it that would be great.  I don't want to take it out unless I'm sure it's not needed.  Thanks

[genericnumber1]

if you don't use $email and/or $_SESSION['email'], you can remove it safely, yes.

[elmas156]

I know it would make the code a little sloppy but would it cause any side effects or any problems if I left it in and it's not being used?

[genericnumber1]

Possibly, yes. And it's VERY sloppy and will cause error messages when you turn your error message threshold up.