PHP發送帶有附件的電子郵件

Question

我似乎找不到我編寫的應該發送帶有附件的電子郵件的php函數的問題。 我已經為此苦苦掙扎了一段時間了。

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

    $random_hash = md5(date('r', time()));
    $headers = "From: webmaster@example.com\r\nReply-To: ".$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";
}

編輯問題是郵件的消息與文件混合在一起並作為附件發送。

Answer 1

我剛剛看了幾封電子郵件，但我注意到最終的附件邊界以“-”結尾，而開始邊界標記沒有。 在您的代碼中，您具有：

--PHP-mixed-$random_hash--
Content-Type: text/plain; name=\"$filename\" 
Content-Transfer-Encoding: base64 
Content-Disposition: attachment 

$attachment
--PHP-mixed-$random_hash--

也許應該是：

--PHP-mixed-$random_hash
Content-Type: text/plain; name=\"$filename\" 
Content-Transfer-Encoding: base64 
Content-Disposition: attachment 

$attachment
--PHP-mixed-$random_hash--

看看這里的例子：

http://en.wikipedia.org/wiki/MIME#Multipart_messages

Answer 2

Artefacto讓我更加關注輸出，並且找到了解決方法：

function myMail($to, $subject, $mail_msg, $filename, $contentType, $pathToFilename){
    $random_hash = md5(date('r', time()));
    $headers = "From: webmaster@mysite.com\r\nReply-To: ".$to;
    $headers .= "\r\nContent-Type: multipart/mixed; boundary=\"PHP-mixed-".$random_hash."\"";
    $attachment = chunk_split(base64_encode(file_get_contents($pathToFilename)));
    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: $contentType; name=\"$filename\" 
Content-Transfer-Encoding: base64 
Content-Disposition: attachment 

$attachment
--PHP-mixed-$random_hash--
";
$message = ob_get_clean();
$fh=fopen('log.txt','w');
fwrite($fh,$message);
$mail_sent = @mail( $to, $subject, $message, $headers );
return $mail_sent ? "Mail sent" : "Mail failed";
}

Answer 3

除非您這樣做是為了了解MIME郵件的內部工作原理，否則，標准的答案是使用像PHPMailer或Swiftmailer這樣的郵件程序庫，它可以開箱即用地處理附件。

SwiftMailer有關如何附加文件的示例在此處 。

Answer 4

這些是我使用的標頭，它們始終像魅力一樣工作。

$base = basename($_FILES['upload']['name']);
$file = fopen($randname_path,'rb');
$size = filesize($randname_path);
$data = fread($file,$size);
fclose($file);
$data = chunk_split(base64_encode($data));

//boundary
$div = "==Multipart_Boundary_x".md5(time())."x";
//headers
$head = "From: $from\n".
        "MIME-Version: 1.0\n".
        "Content-Type: multipart/mixed;\n".
        " boundary=\"$div\"";
//message
$mess = "--$div\n".
        "Content-Type: text/plain; charset=\"iso-8859-1\"\n".
        "Content-Transfer-Encoding: 7bit\n\n".
        "$message\n\n".
        "--$div\n".
        "Content-Type: application/octet-stream; name=\"$base\"\n".
        "Content-Description: $base\n".
        "Content-Disposition: attachment;\n".
        " filename=\"$base\"; size=$size;\n".
        "Content-Transfer-Encoding: base64\n\n".
        "$data\n\n".
        "--$div\n";
$return = "-f$from";

http://asdlog.com/Create_form_to_send_email_with_attachment