Can return 'neutral', which apparently means UTF-8.
mb_language
(PHP 4 >= 4.0.6, PHP 5)
mb_language — Set/Get current language
Parâmetros
- language
-
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.
Valor Retornado
If language is set and language is valid, it returns TRUE. Otherwise, it returns FALSE. When language is omitted, it returns the language name as a string. If no language is set previously, it then returns FALSE.
User Contributed Notes
mb_language
mb_language
Sohel Taslim
18-Sep-2007 07:52
18-Sep-2007 07:52
It can help you to send an email as with Japanese contain.
<?php
mb_language("ja");
$subject = mb_convert_encoding($subject, "ISO-2022-JP","AUTO");
$subject = mb_encode_mimeheader($subject);
$result = mail($to, $subject, $body, $headers, $sendmail_params);
?>

mb_internal_encoding