If we want to change language of a particular action in YII or for the whole application we need to , set CApplication::language . This can be done at runtime as in [crayon-5d1399db0b649048124823/] [crayon-5d1399db0b659063343960/] [crayon-5d1399db0b664145212131/] [crayon-5d1399db0b66f742012085/]