Pass Variable Names to a Function

[Bill Guion <bguion@xxxxxxxxxxx>]

I would like to use a function to check to see if a session variable 
is set and return the session variable if it is set, and return blank 
if not. Something like

function set_var($var)
  {
  echo "var = $var \n";
  if (isset($_SESSION['$var']))
    {
    return $_SESSION['$var'];
    }
  else
    {
    return "";
    }
  }

And I would call the function with set_var($name) or set_var($phone). 
The problem is getting the function to use $var as a variable name, 
rather than a value. What am I missing, please?

     -----===== Bill =====-----
--

Diplomacy - telling your boss he has an open mind
instead of saying he has a hole in his head.

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