where to put vars for use in all controller's functions?

[eluser]Grahack[/eluser]

Code:

<?php
class Photo extends Myglobals {

var $my_var = '';

    function Photo()
    {
        parent::Controller();        // don't forget this !!!
        $this->my_var = 'initialized';
    }

    function index()
    {
        echo $this->my_var;
    }  
}

should work.