我有一个大约 3 年前编写的自定义 PHP 表单。它的构建是为了通过电子邮件发送所有附件，包括 docx 文件，并且非常有效。从今年开始，客户就注意到用户提示发送允许他们上传简历的表单时出错。故障排除发现它只发生在某些 .docx 文件上。我们有大量的 .docx 文件已上传并通过电子邮件发送。所以它是: 1. .docx 编码的变化或我不熟悉的东西 2. 用户必须以某种方式破坏他们的 .docx 文件。

我搜索了 .docx 文件编码方式发生变化的任何证据，但一无所获。我的代码似乎是上传多个文件的最佳实践，甚至是 .docx 文件。为了确保我发布我的 send-mail.php 文件并询问是否有人看到允许所有列出的文件格式和一些 .docx 发送 FINE 的内容，但一些 .docx 文件正在阻塞脚本并在“如果(OK) {"行，表示发送邮件时出错。提前感谢您的帮助。

更新:似乎它不适用于以“Word 2016”格式保存的文档。那么我必须对下面的代码做些什么才能使其适用于 Word 2016 文件？

 if(isset($_FILES) ) {

  // define allowed extensions
  $allowedExtensions = array("pdf","doc","docx","gif","jpeg","jpg","png","rtf","txt","");
  $files = array();

  // loop through all the files
  foreach($_FILES as $name=>$file) {

     // define some variables
     $file_name = $file['name']; 
     $temp_name = $file['tmp_name'];
     $file_type = $file['type'];

     // check if this file type is allowed
     $path_parts = pathinfo($file_name);
     $ext = $path_parts['extension'];
     if(!in_array($ext,$allowedExtensions)) {
        die("Your file type is not allowed. Must be only pdf, txt, doc, docx, gif , jpeg, jpg, png, or rtf. Use backspace to go back.");
     }

     // move this file to the server YOU HAVE TO DO THIS
     $server_file = "/home/content/25/9264325/html/wp-content/uploads/files/$path_parts[basename]";
     move_uploaded_file($temp_name,$server_file);

     // add this file to the array of files
     array_push($files,$server_file);
  }  

  // define some mail variables

  $to = "xxxx@gmail.com";
  $from = $email;
  $subject ="NEW EMPLOYMENT APPLICATION"; 
  $headers = "From: Cxxxxxxs \r\nReply-To: ".$from;

  // define our boundary
  $semi_rand = md5(time()); 
  $mime_boundary = "==Multipart_Boundary_x{$semi_rand}x";

  // tell the header about the boundary
  $headers .= "\r\nMIME-Version: 1.0\r\n";
  $headers .= "Content-Type: multipart/mixed;\r\n";
  $headers .= " boundary=\"{$mime_boundary}\"\r\n\r\n"; 

  // part 1: define the plain HTML email
  $message ="\r\n\r\n--{$mime_boundary}\r\n";
  $message .="Content-Type: text/html; charset=\"iso-8859-1\"\r\n";
  $message .="Content-Transfer-Encoding: base64\r\n\r\n" . $msg . "\r\n\r\n";


  // part 2: loop and define mail attachments if thee is a file


          foreach($files as $file) {
             $aFile = fopen($file,"rb");
             $data = fread($aFile,filesize($file));
             fclose($aFile);
             $data = chunk_split(base64_encode($data));
             $message .= "\r\n--{$mime_boundary}\r\n";
             $message .= "Content-Type: {$file_type};\r\n";
             $message .= " name=\"{$file_name}\"\r\n";
             $message .= "Content-Transfer-Encoding: base64\r\n";
             $message .= "Content-Disposition: attachment;\r\n";
             $message .= "filename=\"{$file_name}\"\r\n";
             $message .= $data . "\r\n";
             $message .= "--{$mime_boundary}--\r\n";
          }

  // send the email
  $ok = mail($to, $subject, $message, $headers); 
  if ($ok) { 
     header('Location: http://www.xxxxx.com/thank-you/');
            } else { 
                echo "<p>mail could not be sent!</p>"; 
            }
            die();
}// if isset files

最佳答案

很难说没有任何测试文件/案例，但我的猜测是错误的 Content-Type，因为您只依赖 $file['type']。

The hard-coded lists in the browsers are pretty limited. Often, the MIME type sent by the browser will be the one reported by the OS. And this is exactly why, as stated in the question, the MIME type reported by the browser is unreliable How is mime type of an uploaded file determined by browser?

尝试将其更改为“通用”

application/octet-stream

关于php - 问题，突然发送 .docx 作为邮件附件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/39237704/