在 PHP 中，如何发送带有附件的 HTML 电子邮件？

Question

我有一个发送给自己并允许人们附加文件的表格。但我似乎不允许在消息中使用 HTML。我想我需要两种不同的 Content-Type：

        $to     = "my@email.com"; // Webmaster
        $subj   = "Great Subject";
        $message = strip_tags($_POST['message']);
        $attachment = chunk_split(base64_encode(file_get_contents($_FILES['attachment']['tmp_name'])));
        $filename = $_FILES['attachment']['name'];
        $boundary =md5(date('r', time())); 
        $headers = "From: $fname $lname <$email>\r\nReply-To: $fname $lname <$email>";
        $headers .= "\r\nMIME-Version: 1.0\r\nContent-Type: multipart/mixed; boundary=\"_1_$boundary\"";
        $message .= "Here is your <strong>File</strong>.".\r\n" ;
        $message .= "This is a multi-part message in MIME format.

--_1_$boundary
Content-Type: multipart/alternative; boundary=\"_2_$boundary\"

--_2_$boundary
Content-Type: text/plain; charset=\"iso-8859-1\"
Content-Transfer-Encoding: 7bit

$message

--_2_$boundary--
--_1_$boundary
Content-Type: application/octet-stream; name=\"$filename\" 
Content-Transfer-Encoding: base64 
Content-Disposition: attachment 

$attachment
--_1_$boundary--";

        mail($to, $subj, $message, $headers);

Answer 1

使用诸如PHPMailer 之类的类，因为这样会更简单。