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-5bc96249a1748219633997/] [crayon-5bc96249a1768339875166/] [crayon-5bc96249a177a247289818/] [crayon-5bc96249a178c805161662/]