PHP 中的 mail() 错误：在 additional_header 中发现多个换行符或格式错误的换行符

Question

我运行在 PHP 中遇到了 mail() 的一些问题。发送邮件时，它告诉我邮件头包含格式错误的换行符。，并没有解决我的问题。我也知道我不能使用 \r\r、\r[=14=]、\r\n\r\n、\n\n 或 \n[=17=]，我没有使用过。但是问题出在哪里呢？我想不通。感谢您的宝贵时间。

function mail_attachment($filename, $mailto, $from_mail, $from_name, $replyto, $subject, $message) {
    $file_size = filesize($filename);
    $handle = fopen($filename, "r");
    $content = fread($handle, $file_size);
    fclose($handle);
    $content = chunk_split(base64_encode($content));
    $uid = md5(uniqid(time()));
    $header = "From: ".$from_name." <".$from_mail.">\r\n";
    $header .= "Reply-To: ".$replyto."\r\n";
    $header .= "MIME-Version: 1.0\r\n";
    $header .= "Content-Type: multipart/mixed; boundary=\"".$uid."\"\r\n";
    $header .= "This is a multi-part message in MIME format.\r\n";
    $header .= "--".$uid."\r\n";
    $header .= "Content-type:text/plain; charset=iso-8859-1\r\n";
    $header .= "Content-Transfer-Encoding: 7bit\r\n";
    $header .= "--".$uid."\r\n";
    $header .= "Content-Type: application/octet-stream; name=\"".$filename."\"\r\n"; 
    $header .= "Content-Transfer-Encoding: base64\r\n";
    $header .= "Content-Disposition: attachment; filename=\"".$filename."\"\r\n";
    $header .= $content."\r\n";
    $header .= "--".$uid."--";
    mail($mailto, $subject, $message, $header)
}

mail_attachment("invoice/0.pdf", "customer@customer.com", "noreply@mattronic.dk", "Mattronic", "reply@mattronic.dk", "Invoice", "Describing text");

Answer 1

您的问题是您正尝试将消息 body 作为 headers 发送，如您问题的评论中所述。

尝试通过 mail() 发送 MIME 邮件附件在某些国家/地区可能被视为酷刑。有很多库可以为你做这件事，我使用 PEAR Mail_Mime package.

function mail_attachment($filename, $mailto, $from_mail, $from_name, $replyto, $subject, $message) {
    include("Mail.php");
    include("Mail/mime.php");
    $headers = [
        "To"=>$mailto,
        "From"=>"$from_name <$from_mail>",
        "Reply-To"=>$replyto
        "Subject"=>$subject,
        "Date"=>date(DATE_RFC822),
    ];
    $msg = new Mail_mime();
    $mail =& Mail::factory("smtp");
    $msg->setTXTBody($message);
    $msg->addAttachment(file_get_contents($filename), "application/pdf", basename($filename), false);
    $body = $msg->get();
    $headers = $msg->headers($headers);
    $mail->send($email_address, $headers, $body);
}

PHP 中的 mail() 错误：在 additional_header 中发现多个换行符或格式错误的换行符

mail() error in PHP: Multiple or malformed newlines found in additional_header

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