我在发送带有多个附件的电子邮件时遇到问题。这是代码:
<?php
if(isset($_POST['sendEmail']))
{
foreach($_FILES['uploadEmail']['error'] as $key=>$value){
if(!$_FILES['uploadEmail']['error'][$key]){
$target_path = "";
$target_path = $target_path . basename( $_FILES['uploadEmail']['name'][$key]);
if(move_uploaded_file($_FILES['uploadEmail']['tmp_name'][$key], $target_path)){
$files[] = $_FILES['uploadEmail']['name'][$key];
}
}
}
$toEmails = explode(",",$_POST['toEmail']);
$count = count($toEmails);
$i = 0; $j = 1; $k = 100;
$bcc = '';
while($i<$count){
$bcc .= $toEmails[$i].",";
if($j==$k || $i==$count-1){
$j=1;
//echo $bcc.'<br />'.$sub.'<br />'.$message.'<br /><br />';
$from = '[email protected]';
$sub = $_POST['subject'];
$message = $_POST['message'];
/////////////////////////
$headers = 'From:'. $from . "\r\n";
$headers .= "Bcc:". $bcc . "\r\n";
// boundary
$semi_rand = md5(time());
$mime_boundary = "==Multipart_Boundary_x{$semi_rand}x";
// headers for attachment
$headers .= "\nMIME-Version: 1.0\n" . "Content-Type: multipart/mixed;\n" . " boundary=\"{$mime_boundary}\"";
// multipart boundary
$message = "This is a multi-part message in MIME format.\n\n" . "--{$mime_boundary}\n" . "Content-Type: text/html; charset=\"iso-8859-1\"\n" . "Content-Transfer-Encoding: 7bit\n\n" . $message . "\n\n";
$message .= "--{$mime_boundary}\n";
// preparing attachments
for($x=0;$x<count($files);$x++){
$file = fopen($files[$x],"rb");
//echo "<br>".filesize($files[$x]);
$data = fread($file,filesize($files[$x]));
fclose($file);
$data = chunk_split(base64_encode($data));
$message .= "Content-Type: {\"application/octet-stream\"};\n" . " name=\"$files[$x]\"\n" .
"Content-Disposition: attachment;\n" . " filename=\"$files[$x]\"\n" .
"Content-Transfer-Encoding: base64\n\n" . $data . "\n\n";
$message .= "--{$mime_boundary}\n";
}
// send
/////////////////////////
mail('',$sub,$message,$headers);
$bcc = '';
}else{
$j++;
}
$i++;
}
}
?>
<html>
<head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.min.js"></script>
<script src="http://js.nicedit.com/nicEdit-latest.js" type="text/javascript"></script>
<script type="text/javascript">bkLib.onDomLoaded(function() {
new nicEditor().panelInstance('message');
// new nicEditor({fullPanel : true}).panelInstance('area2');
});</script>
</head>
<body>
<form method="POST" enctype="multipart/form-data">
<table>
<tr><td><label for="toEmail">Send To : </label></td><td><textarea id="toEmail" name="toEmail" cols="100" rows="10"></textarea></td></tr>
<tr><td><label for="subject">Subject : </label></td><td><input type="text" name="subject" id="subject" size="98"></td></tr>
<tr><td><label for="toEmail">Message : </label></td><td><textarea id="message" name="message" cols="100" rows="10"></textarea></td></tr>
<tr><td><label for="upload[]">Attachments:</label></td><td></td></tr>
<tr><td><label>1</label></td><td><input type="file" name="uploadEmail[]"></td></tr>
<tr><td><label>2</label></td><td><input type="file" name="uploadEmail[]"></td></tr>
<tr><td><label>3</label></td><td><input type="file" name="uploadEmail[]"></td></tr>
<tr><td><label>4</label></td><td><input type="file" name="uploadEmail[]"></td></tr>
<tr><td><label>5</label></td><td><input type="file" name="uploadEmail[]"></td></tr>
<tr><td><label>6</label></td><td><input type="file" name="uploadEmail[]"></td></tr>
<tr><td><label>7</label></td><td><input type="file" name="uploadEmail[]"></td></tr>
<tr><td><label>8</label></td><td><input type="file" name="uploadEmail[]"></td></tr>
<tr><td><label>9</label></td><td><input type="file" name="uploadEmail[]"></td></tr>
<tr><td><label>10</label></td><td><input type="file" name="uploadEmail[]"></td></tr>
<tr><td colspan="2" align="center"><input type="submit" value="Send Email" name="sendEmail" id="sendEmail"></td></tr>
</table>
</form>
<body>
</html>
我收到了邮件,但找不到任何附件。有人知道什么地方可能出问题吗?
这是我收到邮件的电子邮件正文:
MIME版本:1.0内容类型:多部分/混合;boundary =“ == Multipart_Boundary_x2d454346f03d2c19cfefc838ce4d8623x”这是MIME格式的多部分消息。-== Multipart_Boundary_x2d454346f03d2c19cfefc838ce4d8623x内容类型:text / html; charset =“ iso-8859-1”内容传输编码:7bitds fsdfsdfsdfsdfsdfsdfsf sffdfsdfsdfs fsdfdf sdf s-== Multipart_Boundary_x2d454346f03d2c19cfefc838ce4d8623x内容类型:{“ application / octet-stream”}; name =“ / tmp / phpHFTvAw”内容处置:附件; filename =“ Lighthouse.jpg”内容传输编码:base64-== Multipart_Boundary_x2d454346f03d2c19cfefc838ce4d8623x内容类型:{“ application / octet-stream”}; name =“ / tmp / phpyX67HR”内容处置:附件; filename =“ Penguins.jpg”内容传输编码:base64-== Multipart_Boundary_x2d454346f03d2c19cfefc838ce4d8623x
您的代码有一些问题,我在下面详细介绍。
$headers = 'From:'. $from . "\r\n";
$headers .= "Bcc:". $bcc . "\r\n";
...
// headers for attachment
$headers .= "\nMIME-Version: 1.0\n"
. "Content-Type: multipart/mixed;\n"
. " boundary=\"{$mime_boundary}\"";
// multipart boundary
$message = "This is a multi-part message in MIME format.\n\n"
. "--{$mime_boundary}\n"
. "Content-Type: text/html; charset=\"iso-8859-1\"\n"
. "Content-Transfer-Encoding: 7bit\n\n"
. $message
. "\n\n";
$message .= "--{$mime_boundary}\n";
电子邮件中的行由CRLF
(\r\n
)序列分隔。尚不清楚mail()
函数是否将\n
转换为\r\n
,但是考虑到您的From:
和Bcc:
标头正在使用\r\n
,这些标头可能应该使用相同的名称。您的输出还表明行尾可能丢失或格式不正确。
如果未收到消息,请尝试仅使用LF(\ n)。一些Unix邮件传输代理(最著名的是» qmail)会自动用CRLF替换LF(如果使用CRLF,则会导致CR翻倍)。这应该是不得已的方法,因为它不符合» RFC 2822。
$message .= "Content-Type: {\"application/octet-stream\"};\n"
. " name=\"$files[$x]\"\n" .
删除括号和引号:
$message .= "Content-Type: application/octet-stream\n"
. " name=\"$files[$x]\"\n" .
[此外,name
参数已被弃用,以filename
标头中的Content-Disposition
参数为好。如果要保持其向后兼容性,则应从中删除路径。 (您的输出表明您使用的是tmp_name
,而不是name
。)>
$message .= "--{$mime_boundary}\n"; // preparing attachments for($x=0;$x<count($files);$x++){ ... $message .= /* body part */; $message .= "--{$mime_boundary}\n"; }
请注意,最后一个定界符必须带有两个尾划线。在循环的开头插入分隔定界符,并在循环之后添加一个封闭的定界符:
// preparing attachments for($x=0;$x<count($files);$x++){ $message .= "--{$mime_boundary}\n"; ... $message .= /* body part */; } $message .= "--{$mime_boundary}--\n";
请参见下面有关电子邮件语法的部分。
$k = 100; ... while($i<$count){ $bcc .= $toEmails[$i].","; if($j==$k || $i==$count-1){ ... $headers .= "Bcc:". $bcc . "\r\n";
请注意,电子邮件中有行长限制。 RFC 5322:
...每行字符不得超过998个字符,且不得超过78个字符(不包括)CRLF。您可能想减少
Bcc
的缩写或引入FWS (Folding White Space):
$bcc .= $toEmails[$i].",\r\n "; /* FWS */
一些可能有用或可能无效的其他问题或通知:
foreach($_FILES['uploadEmail']['error'] as $key=>$value){ if(!$_FILES['uploadEmail']['error'][$key]){
最后一行与:
if(!$value){
$target_path = ""; $target_path = $target_path . basename( $_FILES['uploadEmail']['name'][$key]);
我假设
$target_path
应该初始化为上载目录。
$toEmails = explode(",",$_POST['toEmail']);
通常,您不应该允许随机用户提供外发电子邮件地址,但是我怀疑这是受信任用户的内部应用程序。
这是根据RFC 2046的多部分消息主体的结构的摘录。(BNF语法,有所简化。]
multipart-body:= [preamble CRLF]虚线边界CRLF身体部位*封装封闭定界符[CRLF结语]虚线边界:=“-”边界正文部分:= MIME部分标头[CRLF * OCTET]封装:=分隔符CRLF身体部位分隔符:= CRLF虚线边界close-delimiter:=分隔符“-”参考
我建议使用PHPMailer发送带有附件的邮件: