public function changes()
    {
        $changes = array();
        foreach(array_unique($this->_changed) as $key)
            $changes[$key] = $this->get($key, false);

        return $changes;
    }
public function changes()
    {
        $changes = array();
        foreach(array_unique($this->_changed) as $key)
            $changes[$key] = $this->get($key, false);

        return $changes;
    }
public function changes ( ) { $ changes = array ( ) ; foreach ( array_unique ( $ this -> _changed ) as $ key ) $ changes [ $ key ] = $ this -> get ( $ key , false ) ; return $ changes ; }
Returns a key=>val array of properties that have changed since the last save
@return array
Returns a key = > val array of properties that have changed since the last save