此邮件标题文本有什么问题？

Question

以下 $header 通过 PHP 的 mail($to,$subject,$content,$header) 命令发送。邮件已到达，并且似乎有一个附件。但邮件文本和文件一样都是空的。我认为这与行间距有关，但我看不出问题所在。我尝试将内容（边界之间）放入 $contents 中，而不是将其附加到 $header 中。这没有什么区别。有什么想法吗？

From: [email protected] 
Reply-To: [email protected] 
X-Mailer: PHP 5.3.1
MIME-Version: 1.0
Content-Type: multipart/mixed;
    boundary="7425195ade9d89bc7492cf520bf9f33a"

--7425195ade9d89bc7492cf520bf9f33a
Content-type:text/plain; charset=iso-8859-1
Content-Transfer-Encoding: 7bit

this is a test message.

--7425195ade9d89bc7492cf520bf9f33a
Content-Type: application/pdf; name="test.pdf"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="test.pdf"

JVBERi0xLjMKJcfsj6IKNSAwIG9iago8PC9MZW5ndGggNiAwIFIvRmlsdGVyIC9GbGF0ZURlY29k
ZT4+CnN0cmVhbQp4nE2PT0vEMBDFadVdO4p/v8AcUyFjMmma5CqIIF5cctt6WnFBqLD1+4Np1nY3
c3lvfm+GyQ4VaUY11iQ2PTyuHG5/Ibdx9fIvhi3swJMZX24c602PTzENegwUbNAO4xcoCsG5xuWE
.
... the rest of the file
.
MDAwMDA2MDYgMDAwMDAgbiAKMDAwMDAwMDcwNyAwMDAwMCBuIAowMDAwMDAxMDY4IDAwMDAwIG4g
CjAwMDAwMDA2NDcgMDAwMDAgbiAKMDAwMDAwMDY3NyAwMDAwMCBuIAowMDAwMDAxMjg2IDAwMDAw
IG4gCjAwMDAwMDA5MzIgMDAwMDAgbiAKdHJhaWxlcgo8PCAvU2l6ZSAxNCAvUm9vdCAxIDAgUiAv
SW5mbyAyIDAgUgovSUQgWzxEMURDN0E2OUUzN0QzNjI1MDUyMEFFMjU0MTMxNTQwQz48RDFEQzdB
NjlFMzdEMzYyNTA1MjBBRTI1NDEzMTU0MEM+XQo+PgpzdGFydHhyZWYKNDY5MwolJUVPRgo=


--7425195ade9d89bc7492cf520bf9f33a--

$header 结束时不换行

Answer 1

我使用下面的代码发送带有附件以及 html 和文本消息部分的消息。我记得我花了很长时间才把它弄好，但不幸的是我不记得哪些部分是我的问题。也许看看它会对你有所帮助。我更改了一些不相关的变量，希望使其更易于阅读。如果有什么奇怪或不清楚的地方，请随时询问，我会尽力解释。

public function sendEmail($htmlString)
{
    $random_hash = md5(date('r', time()));

    $message = "--mixed-$random_hash\n";
    $message .= 'Content-Type: multipart/alternative; boundary="alt-' . $random_hash . '"' . "\n\n";
    $message .= 'MIME-Version: 1.0' . "\n";
    $message .= '--alt-' . $random_hash . "\n";
    $message .= 'Content-Type: text/plain; charset="iso-8859-1"' . "\n";
    $message .= 'Content-Transfer-Encoding: 7bit' . "\n\n";

    // text message
    $message .= strip_tags($htmlString) . "\n\n";

    $message .= '--alt-' . $random_hash . "\n";
    $message .= 'Content-Type: text/html; charset="iso-8859-1"' . "\n";
    $message .= 'Content-Transfer-Encoding: 7bit' . "\n\n";

    // html message
    $message .= $htmlString . "\n\n";

    $message .= '--alt-' . $random_hash . '--' . "\n";

    // graph image
    if($this->selectedGraph != 0)
    {
        $graphString = $this->getGraph(); // image attachment
        $graphString = chunk_split(base64_encode($graphString));

        $linkID = 'graph-' . $userInfo['FirmID'] . $random_hash . '-image';

        $message .= '--mixed-' . $random_hash . "\n";
        $message .= 'MIME-Version: 1.0' . "\n";
        $message .= 'Content-Transfer-Encoding: base64' . "\n";
        $message .= 'Content-ID: ' . $linkID . "\n";
        $message .= 'Content-Type: image/gif; name="graph.gif"' . "\n";
        $message .= 'Content-Disposition: attachment' . "\n\n";

        $message .= $graphString;
        $message .= '--mixed-' . $random_hash . '--' . "\n";

    }
    else
    {
        $message .= '--mixed-' . $random_hash . '--' . "\n";
    }


    $headers = 'From: ' . $this->from. "\r\nReply-To: " . $this->replyto;
    $headers .= "\r\nContent-Type: multipart/related; boundary=\"mixed-" . $random_hash . "\"\r\nMIME-Version: 1.0";

    $flags = '-f ' . BOUNCED_EMAIL_ADDRESS;

    return mail($userInfo['Email'], $this->subject, $message, $headers, $flags);

}

Answer 2

从头开始构建哑剧邮件时会发生这些事情。有几个 php 模块可以用来生成很酷且兼容的 mime 消息。 Mail_Mime 应该可以解决问题。