Session variables problem in functions

I am having problems with initializing session variables inside functions
While writing PHP scripts I need to set some session variables inside some functions
             function some_function()
                    $message="You are NOT authorized to view this page";

The same code for setting session variables in working fine when I use in the main part of the PHP i.e. not inside any function.

Can anyone figure out my mistake in setting session variables??

Suggestions and solutions are welcome

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Use the super global variable $_SESSION["message"] instead

$message =& $_SESSION['message'];
$message = $_SESSION['message'];
No Shivsa, put the & back in.

Otherwise the value will be lost, after he exits the function.

$message = &$_SESSION['message'];

could be used, the difference is that with my first one, you are using the copy by reference operator, where as in my second example you are copying a reference.

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