Mine

function registerModule2($className, $shortName = null)    {        if (isset($this->modules->$className)) return false;        $this->modules->$className = &new $className($this);        // universal shortcuts        if ($shortName === null) {            $shortName = (substr($className, 0, 4) === 'Texy') ? substr($className, 4) : $className;            $shortName{0} = strtolower($shortName{0});        }        if (!isset($this->$shortName)) $this->$shortName = & $this->modules->$className;    }