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-5c0d8d254dfd9478827491/] [crayon-5c0d8d254dffe850622456/] [crayon-5c0d8d254e016143546568/] [crayon-5c0d8d254e02c695226327/]