mb_language() sets language. If
language is omitted, it
returns current language as string.
language setting is
used for encoding e-mail messages. Valid languages are
"Japanese", "ja","English","en" and "uni" (UTF-8).
mb_send_mail() uses this setting to encode
e-mail.
Language and its setting is ISO-2022-JP/Base64 for
Japanese, UTF-8/Base64 for uni, ISO-8859-1/quoted printable
for English.
Return Value: If
language is set and
language is valid, it returns
TRUE. Otherwise, it returns
FALSE. When
language is omitted, it returns language name as
string. If no language is set previously, it returns FALSE.
See also mb_send_mail().