php 发邮件 带附件 PHP发送带有附件的电子邮件

我似乎找不到我编写的应该发送带有附件的电子邮件的php函数的问题。我已经为此苦苦挣扎了一段时间了。

function myMail($to, $subject, $mail_msg, $filename, $contentType){

$random_hash = md5(date('r', time()));

$headers = "From: webmaster@\r\nReply-To: ".$to;

$headers .= "\r\nContent-Type: ".$contentType.

"; boundary=\"PHP-mixed-".$random_hash."\"";

$attachment = chunk_split(base64_encode(file_get_contents($filename)));

ob_start();

echo "

--PHP-mixed-$random_hash

Content-Type: multipart/alternative; boundary=\"PHP-alt-$random_hash\"

--PHP-alt-$random_hash

Content-Type: text/plain; charset=\"utf-8\"

Content-Transfer-Encoding: 7bit

$mail_msg

--PHP-alt-$random_hash

--PHP-mixed-$random_hash--

Content-Type: text/plain; name=\"$filename\"

Content-Transfer-Encoding: base64

Content-Disposition: attachment

$attachment

--PHP-mixed-$random_hash--

";

$message = ob_get_clean();

$mail_sent = @mail( $to, $subject, $message, $headers );

return $mail_sent ? "Mail sent" : "Mail failed";

}

编辑 问题是邮件的消息与文件混合在一起并作为附件发送。