Accessing sessions from within classes

[geera]

Hi folks, I'm having some problems setting session variables from within a class i've created. $SESSION can be modified from outside the class, but putting a $SESSION['test'] = 1; inside the class constructor doesn't do anything when the object is created. I'm calling session_start() before I include the class file, so I don't think that's the problem.

Example:

<?php
session_start();
$_SESSION['test'] = 1; // this works

include("class.php");
$my = new Class();

$my->setSession("sesstest", 1); // this doesn't work
?>

The setSession() function just executes $_SESSION[$arg1] = $arg2;

Going to a 2nd test page that reads and prints out the session values shows that $_SESSION['sesstest'] does not exist, even though it should. Can someone explain why this is happening? I'm trying to use sessions to store shopping cart information, but my cart class can't do anything with them!

Thanks much.

[Reformed]

I know this is an old question, but it seems that this problem happens to serveral people and it has happened to me. Why can't a session be written from inside of a class?

I am trying to simply create a session from a class using $_SESSION['mysession'] and nothing happens. Is there a know problem with this?

Here is my code (this is inside of the class):

//create a new User object uponsuccessful login
		if(!$this->result[0][0] == null) {
		    $this->user = new UserBO();
		    $this->user->setFirstName($this->result[0][0]);
		    $this->user->setId($this->result[0][0]);
		    $this->user->setSecLevel($this->result[0][4]);
		    $this->user->setSecDesc($this->result[0][5]);

	    $this->userView = serialize($this->user);
	    $_SESSION['userView'] = $this->userView;
	}else{
	    $_SESSION['loginError'] = 'loginError';
	    header('location:'.LOGIN_FORM);
	}

Niether the error sesssion, nor the userView session is written. Nothing happens. Help :-(

[ednark]

try accessing $_SESSION from the $GLOBALS array...

$GLOBALS['_SESSION']['test']

instead of

$_SESSION['test']

see if that works

[Reformed]

Okay, I discovered the problem. For anyone else experiencing this problem (and there are a few posts with the same question) when you use sessions in your classes, you have to start the session in the scope of the script that calls the object of the class your using.

<?php
/*****don't start the session here***/
class Foo 
{
        function faker() {
             $_SESSION['fake_sessioin'] = 'i am not real';
        }
}
?>

call the session in the script that instantiates the object of your class and the session from your class will be set:

<?php
/****start the session here***/
session_start();

$o = new Foo();
$flip = faker();
?>

On the face of it, this is pretty obvious, but when you have many classess working together it gets less clear. I hope this helps someone.