protected function multiAssocArrayToArrayOfArrayOfString($multi)
    {
        $arrayKeys   = array_keys($multi[ 0 ]);
        $arrayValues = array();

        foreach ( $multi as $v ) {
            $arrayValues[] = array_values($v);
        }

        $_arrayKeys      = array();
        $_arrayKeys[ 0 ] = $arrayKeys;

        return array_merge($_arrayKeys , $arrayValues);
    }