php发送电子邮件附件

Question

我似乎无法找到这个PHP函数的问题，我写的应该发送附件的电子邮件。我一直在努力挣扎。

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"; 
} 

编辑的问题是，在邮件的消息与文件混合并作为附件发送。

Answer 1

Artefacto让我看看输出与更多的关注，我发现修复：

 
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 2

除非您这样做了解MIME邮件的内部运行情况，否则标准答案是使用邮件库库，如PHPMailer或Swiftmailer，它们可以处理开箱即用的附件。

SwiftMailer示例如何附加文件是here。

Answer 3

我刚刚看了几封电子邮件，我注意到最终附件边界以' - '结尾，而开始边界标记没有。在你的代码，您有：

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

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

也许应该是：

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

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

看一看这里的例子：

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

Answer 4

这些是我使用的标题，他们一直像魅力一样工作。

$base = basename($_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