mb_send_mail() sends email. Headers and message are converted and encoded according to mb_language() setting. mb_send_mail() is wrapper function of mail(). See mail() for details.
to is mail addresses send to. Multiple recipients can be specified by putting a comma between each address in to. This parameter is not automatically encoded.
subject is subject of mail.
message is mail message.
additional_headers is inserted at the end of the header. This is typically used to add extra headers. Multiple extra headers are separated with a newline ("\n").
additional_parameter is a MTA command line parameter. It is useful when setting the correct Return-Path header when using sendmail.
如果成功则返回 TRUE，失败则返回 FALSE。
See also mail(), mb_encode_mimeheader(), and mb_language().