[Resolved] session_is_registered() vs. $_SESSION

[phence]

I have been told lately that using session_is_registered() is old and out dated and we should use the superglobal $_SESSION

What about preforming checks on the $SESSION var?
it doesn't quite seem to work for me when i try something like this

if (!($_SESSION['ID'] = FALSE)){ // double negatives are fun.. lol!!!
	if (!$_SESSION['referer']){ 
		$_SESSION['errors'] = "You Are Already Logged In!";				 
		header("Location: [url]http://www.iwannatrade.com/test/index.php[/url]");
        exit;
}

when preforming checks is it alright to use

if (session_is_registered('ID')){ ...

and if you know... what makes "session_is_registered()" so bad?
I do like to use $SESSION, it seems easier, but can't seem to do the proper checks using only the $SESSION method.

I am trying to develop some consistancy in my coding technique.. so i appreciate any input. Thanks!

[LordShryku]

The equivalents would be [man]empty[/man] or [man]isset[/man].

if(!isset($_SESSION['ID'])) {
   echo "session is not set";
}

The reason to use it is because of register_globals....

[man]session_register[/man]

If you want your script to work regardless of register_globals, you need to instead use the $SESSION array as $SESSION entries are automatically registered. If your script uses session_register(), it will not work in environments where the PHP directive register_globals is disabled.

[phence]

Thanks alot! I did use it isset in a couple of places in my script, just not all the time, and was trying different methods... hope'n that simply using "if (!$_SESSION['referer']){ " might work... and it didn't!

Thanks a lot tho, should have known better!