public function get($key)
    {
        if( isset($this->values[$key]) ) {
            return $this->values[$key];
        } else {
            return null;
        }
    }
public function get($key)
    {
        if( isset($this->values[$key]) ) {
            return $this->values[$key];
        } else {
            return null;
        }
    }
public function get ( $ key ) { if ( isset ( $ this -> values [ $ key ] ) ) { return $ this -> values [ $ key ] ; } else { return null ; } }
Get a value that has been set

@param $key
@return mixed
Get a value that has been set