Hai cercato la traduzione di although da Coreano a Polacco

although connection can be omitted, it is not recommended, since it could be a cause of hard to find bug in script.
mimo że connection może zostać pominiete, nie jest to zalecane, gdyż może spowodować trudny do znalezienia błąd w skrypcie.

참고: although this function will not perform the conversion, some internal stream state *might* be changed by this call.
notatka:

although user can send multiple query at once, user cannot send multiple query over busy connection. if query is sent while connection is busy, it waits until last query is finished and discards all result.
jeśli zapytanie będzie wysłane gdy połączenie jest zajęte, będzie oczekiwało aż wykona się poprzednie zapytanie i utracone zostaną wszystkie wyniki.

although, browsers are smart enough to detect character encoding in html. charset is better to be set in http header. change default_charset according to character encoding.
przykład 1. php.ini setting example

참고: as of php 4.3, this function can (potentially) work on any kind of stream. in php 4.3, socket based streams are still the only kind supported in the php core, although streams from other extensions may support this function.
przykład 1. stream_set_timeout() example