1

好吧，我认为这有点棘手，我有一个表单，我想用它来允许用户上传文件，当他们点击提交时，将文件通过电子邮件发送给某人。我有这个为一个文件工作。

查看代码

   <html>
<head>
  <title>Administration - upload new files</title>
</head>
<body>
<h1>Upload new news files</h1>
<form enctype="multipart/form-data" action="upload.php" method="post">
  <input type="hidden" name="MAX_FILE_SIZE" value="1000000">
  Upload this file: <input name="userfile" type="file">

  <input type="hidden" name="MAX_FILE_SIZE" value="1000000">
  Upload this file: <input name="userfile" type="file">
  <input type="submit" value="Send File">
</form>
</body>
</html>

和

<html>
<head>
  <title>Uploading...</title>
</head>
<body>
<h1>Uploading file...</h1>
<?php
$youremail = "your@email.co.uk";
$tmp_name = $_FILES['userfile']['tmp_name'];
    $type = $_FILES['userfile']['type'];
    $name = $_FILES['userfile']['name'];
    $size = $_FILES['userfile']['size'];
    if (file_exists($tmp_name))
        {
         if(is_uploaded_file($tmp_name)) {
            $file = fopen($tmp_name,'rb');            //open the file
                 $data = fread($file,filesize($tmp_name));    //read the file
                 fclose($file);                    // close the file
                 $data = chunk_split(base64_encode($data));    // encode and split
                }
            $bound_text = "x".md5(mt_rand())."x";
            $bound = "--".$bound_text."\r\n";
            $bound_last = "--".$bound_text."--\r\n";
             $headers = "From: {$sendersname}<{$sendersemail}>\r\n"
            ."MIME-Version: 1.0\r\n"
              ."Content-Type: multipart/mixed; boundary=\"$bound_text\"";
            $message .= "If you can see this MIME than your client doesn't accept MIME types!\r\n"
              .$bound;

            $message .= "Content-Type: text/html; charset=\"iso-8859-1\"\r\n"
              ."Content-Transfer-Encoding: 7bit\r\n\r\n"
              .$sendcontent."\r\n"
              .$bound;

            $message .= "Content-Type: ".$type."; name=\"".$name."\"\r\n" 
              ."Content-Transfer-Encoding: base64\r\n"
              ."Content-disposition: attachment; file=\"".$name."\"\r\n" 
              ."\r\n"
              .$data
              .$bound_last; 
            }

    mail($youremail, $subject, $message, $headers);
    ?>

当我想附加多个文件时，问题就来了。我要按什么顺序进行操作，在第一页上我想要它，这样当您单击附加文件时，它将添加一个新文件框，然后当再次单击它时，会出现另一个文件框，依此类推。所以表单是动态创建的。

这将带我进入下一个问题，即发送附件，因为我们不知道用户附加了多少。

我确定任何指针都不会像将 if (file_exists($tmp_name) 更改为一段时间那样简单？

非常感谢你提前

编辑所以现在我有

<form enctype="multipart/form-data" action="upload.php" method="post">
  <input type="hidden" name="MAX_FILE_SIZE" value="1000000">
  Upload this file: <input name="userfile[]" type="file">

  <input type="hidden" name="MAX_FILE_SIZE" value="1000000">
  Upload this file: <input name="userfile[]" type="file">
  <input type="submit" value="Send File">

和

<html>
<head>
  <title>Uploading...</title>
</head>
<body>
<h1>Uploading file...</h1>
<?php
$youremail = "email@email.co.uk";

$i = count($_FILES['userfile']);


foreach($_FILES['userfile'] as $file){    
    $tmp_name = $file['tmp_name'];
    $type = $file['type'];
    $name = $file['name'];
    $size = $file['size'];


    if (file_exists($tmp_name))
        {
         if(is_uploaded_file($tmp_name)) {
            $file = fopen($tmp_name,'rb');            //open the file
                 $data = fread($file,filesize($tmp_name));    //read the file
                 fclose($file);                    // close the file
                 $data = chunk_split(base64_encode($data));    // encode and split
                }
            $bound_text = "x".md5(mt_rand())."x";
            $bound = "--".$bound_text."\r\n";
            $bound_last = "--".$bound_text."--\r\n";
             $headers = "From: {$sendersname}<{$sendersemail}>\r\n"
            ."MIME-Version: 1.0\r\n"
              ."Content-Type: multipart/mixed; boundary=\"$bound_text\"";
            $message .= "If you can see this MIME than your client doesn't accept MIME types!\r\n"
              .$bound;

            $message .= "Content-Type: text/html; charset=\"iso-8859-1\"\r\n"
              ."Content-Transfer-Encoding: 7bit\r\n\r\n"
              .$sendcontent."\r\n"
              .$bound;

            $message .= "Content-Type: ".$type."; name=\"".$name."\"\r\n" 
              ."Content-Transfer-Encoding: base64\r\n"
              ."Content-disposition: attachment; file=\"".$name."\"\r\n" 
              ."\r\n"
              .$data
              .$bound_last; 
            }
echo "$i";
        }

    mail($youremail, $subject, $message, $headers);


    ?>

它正在发送一封电子邮件，但没有附件我把 $i 放进去看看发生了什么，如果只有 2 个文件上传，它返回 5 不应该是 2 吗？

4

1 回答 1

2

您可以将文件输入更改为这样的数组：

<input name="userfile[]" type="file">

$_FILES这将为您的阵列增加额外的深度。您可以确定使用 上传的附件数量count($_FILES['userfile'])。并循环通过提供的附件：

foreach($_FILES['userfile'] as $file) {
   // Access the elements with:
   // $file['name']
   // etc..
}

至于单击链接以创建任意数量的文件输入，您需要使用 Javascript。这可以通过 vanilla JS 完成，但如果您使用的是 jQuery，您可能需要查看clone()。

于 2013-03-22T11:15:46.340 回答