(PECL mailparse >= 0.9.0)
mailparse_msg_extract_whole_part_file — Extracts a message section including headers without decoding the transfer encoding
$mimemail, string $filename, callable $callbackfunc = ?): string本函數還未編寫(xiě)文檔，僅有參數列表。
mimemail
A valid MIME resource.
filename
callbackfunc