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(PHP 4 >= 4.0.6, PHP 5)
mb_language — Set/Get current 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.
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.
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);
?>
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