PHP电子邮件PDF附件发送

Question

试图与PDF附件的电子邮件，利用swiftmailer尝试和没有工作，这个代码拉链但不PDF :(工作

$attachment = chunk_split(base64_encode(file_get_contents($filename))); 
ob_start(); //Turn on output buffering 
?> 
--PHP-mixed-<?php echo $random_hash; ?> 
Content-Type: multipart/alternative; boundary="PHP-alt-<?php echo $random_hash; ?>" 

--PHP-alt-<?php echo $random_hash; ?> 
Content-Type: text/html; charset="iso-8859-1" 
Content-Transfer-Encoding: 7bit 

<?php echo $message."<br /><br />"; 
?> 

--PHP-alt-<?php echo $random_hash; ?>-- 

--PHP-mixed-<?php echo $random_hash; ?> 


Content-Type: application/octet-stream; name="<?php echo $filename?>" 
Content-Transfer-Encoding: base64 
Content-Disposition: attachment; filename="<?php echo $filename?>" 

<?php echo $attachment; ?> 
--PHP-mixed-<?php echo $random_hash; ?>-- 

<?php 
//copy current buffer contents into $message variable and delete current output buffer 
$message = ob_get_clean(); 
//send the email 
$mail_sent = @mail($to, $subject, $message, $headers); 

邮件被发送和罚款我收到邮件：但附件不在那里，并在meial所有的电子邮件中编码的base64：

ontent-Type：application/octet-stream; name =“media.pdf”Content-Transfer- Encoding：base64 Content-Disposition：attachment; filename =“media.pdf”JVBERi0xLjMKMSAwIG9iago8PCAvVHlwZSAvQ2F0YWxvZwovT3V0bGluZXMgMiAwIFIKL1BhZ2Vz IDMgMCBSID4 + CmVuZG9iagoyIDAgb2JqCjw8IC9UeXBlIC9Pd XRsaW5lcyAvQ291bnQgMCA + PGPL bmRvYmoKMyAwIG9iago8PCAvVHlwZSAvUGFnZXMKL0tpZHMgWzYgMCBSCjE2IDAgUgpdCi9Db3Vu dCAyCi9SZXNvdXJjZXMgPDwKL1Byb2NTZXQgNCAwIFIKL0ZvbnQgPDwgCi9GMSA4IDAgUgovRjIg OSAwIFIKPj4KL1hPYmplY3QgPDwgCi9JMSAxMiAwIFIKL0kyIDE1IDAgUgovSTMgMjAgMCBSCi9J NCAyMyAwIFIKPj4KPj4KL01lZGlhQm94IFswLjAwMCAwLjAwMCA2MTIuMDAwIDc5Mi4wMDBdCiA + PgplbmRvYmoKNCAwIG9iagpbL1BERiAvVGV4dCAvSW1hZ2VDIF0KZW5kb2JqCjUgMCBvYmoKPDwK L0NyZWF0b3IgKERPTVBERikKL0NyZWF0aW9uRGF0ZSAoRDoyMDEzMDgyMzAyMDA0NCswMCcwMCcp Ci9Nb2REYXRlIChEOjIwMTMwODIzMDIwMDQ0KzAwJzAwJykKPj4KZW5kb2JqCjYgMCBvYmoKPDwg L1R5cGUgL1BhZ2UKL1BhcmVudCAzIDAgUgovQW5ub3RzIFsgMTAgMCBSIDEzIDAgUiBdCi9Db250 ZW50cyA3IDAgUgo + PgplbmRvYmoKNyAwIG9iago8PCAvRmlsdGVyIC9GbGF0ZURlY29kZQovTGVu Z3RoIDI3OCA + PgpzdHJlYW0KeJyFkb1Ow0AQhHs/xZRQsNm9/2tRAnJEA1wXpUBJSIOFIAWvz9ox FwMKyNLJmtuZb3evYWJmTM/3fXNdYJIljhbRGnIxoWwxuzEQT4zyDKwuSlvuFpdrlCUWpfmd83Cr YvT4AGOJFbDWn21Tg00mYYsO1iTKJlXlBY/fnYaMH90uE0tAZNVSVrMPhnJyVfnL3NcGzkNtCG50

Answer 1

根据部分消息（ontent-Type: ...），我猜测输出缓冲区已经被填满并且被自动刷新，只留下之后的输出将刷新分配给$message。

--PHP-mixed-<?php echo $random_hash; ?>和Content-Type: application/octet-stream; ...之间还有两个额外的空白行可能会导致麻烦。

依靠输出缓冲来构造一个字符串既容易出错又完全不必要。这是多更好地使用PHP的HEREDOC syntax代替：

$message = <<<MSG 
--PHP-mixed-$random_hash 
Content-Type: multipart/alternative; boundary="PHP-alt-$random_hash" 

--PHP-alt-$random_hash 
Content-Type: text/html; charset="iso-8859-1" 
Content-Transfer-Encoding: 7bit 

$message<br /><br /> 


--PHP-alt-$random_hash-- 

--PHP-mixed-$random_hash 
Content-Type: application/octet-stream; name="$filename" 
Content-Transfer-Encoding: base64 
Content-Disposition: attachment; filename="$filename" 

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

MSG; 

$mail_sent = @mail($to, $subject, $message, $headers); 

注意，在邮件的行尾必须是CRLF（如\ r \ n）。如果上述方法无效，您可能需要创建一个字符串有明确的行结尾：

$message = "--PHP-mixed-$random_hash\r\n" 
     . "Content-Type: multipart/alternative; boundary=\"PHP-alt-$random_hash\"\r\n" 
     . "\r\n" 
     /* ... */ 
     . $attachment 
     . "\r\n--PHP-mixed-$random_hash--" 
     . "\r\n"; 

见PHP的mail() manual page一些进一步的细节。