发附件问题，mb_send_mail不可以，mail可以，为啥？

很着急啊，

google_ad_width = 250; google_ad_height = 250; google_ad_format = "250x250_as"; google_color_url = "000000";

求解。

谢谢先

以下是我的程序：

<?php

$from .= " <kei@lx94>";

$to .= " <kei@lx94>";

$subject = "添付ファイルテスト";

$body = "添付ファイルテスト正文";

$filename = "/work/cgi-bin/prs/test.txt";

$att_files = "/work/cgi-bin/prs/テストファイル.txt";

//$mine = "js";

//send_mail2($to, $subject, $text_body, $headers, $html_body="", $att_names="", $att_files="", $file_types="");

/*

if ($filename){

($attach = file_get_contents($filename)) Or die("Open Error: $filename");

$filename = basename($filename);

$ret = Attach_Mail($from, $to, $subject, $body, $filename, $attach, $mine);

}else{

}

*/

$ret = send_mail($to, $from, $subject, $body, $cc = null, $bcc = null, $filename);