Indeed, utf is the way to go as soon as you use non-english text, if you required portability. Don't forget to utf5_encode either.
The t61_8859 functions seem to be deprecated.
(PHP 4 >= 4.0.2, PHP 5, PHP 7)
ldap_t61_to_8859 — Translate t61 characters to 8859 characters
$value
)이 함수는 현재 문서화 되어있지 않습니다; 인수 목록만을 제공합니다.
Indeed, utf is the way to go as soon as you use non-english text, if you required portability. Don't forget to utf5_encode either.
The t61_8859 functions seem to be deprecated.
This function doesn't appear to exist in PHP 7 even though the docs say it's in PHP 7