PHP表单文件上传：2个输入，但仅附加1个文件

我想弄明白这一点已经有一段时间了，但似乎还是弄不明白。我有一个一个文件上传的工作代码，工作良好，现在试图创建一个2上传。为了尝试添加多个文件，我添加了一个foreach循环，并将表单输入的name属性切换为name=“photo[]”，以便它读取一个数组。表单提交时没有错误，但我仍然只收到电子邮件附件中的第一个文件。我已经看到很多类似的问题，但仍然无法理解-谢谢你的耐心！（我还玩过：

for($i = 0; $i < 2; $i++) {

（$i=0；$i<2；$i++）的

{

代替和以及foreach），但这是我当前的代码

HTML表单：

<form enctype="multipart/form-data" method= "post" action="couple_uploader_test.php"> 
   <input type="hidden" name="myEmail" value="info@website.co.uk"> 
   <input type="hidden" name="subject" value="Couple Portrait Order">
   <label>Name:</label><input type="text" name="customerName" required="true"/><br/>
   <label>Email:</label><input type="email" name="customerEmail" required="true"/><br/>
   <label>Photo:</label><input type="file" name="photo[]" accept="image/*" required="true"/>
   <label>2nd Photo (optional):</label><input type="file" name="photo[]" accept="image/*"/>
   <label>Notes:</label><textarea name="message" cols="30" rows="6">customer message here</textarea>
   <input type="hidden" name="thankyou_url" value="http://www.website.co.uk/html/couple_uploaded.html"/>
   <input type="submit" value="Submit Photo"/>
</form>

<?php
$to = $_POST['myEmail'];
$from = $_POST['customerEmail'];
$name = $_POST['customerName'];
$subject = $_POST['subject'];
$message = $_POST['message']."\n\n" . $name;

$message = wordwrap($message,70);

foreach ($_FILES['photo']['name'] as $key => $tmp_name) {

   $allowedExts = array("gif", "jpeg", "jpg", "png");
   $temp = explode(".", $_FILES["photo"]["name"][$key]);
   $extension = end($temp);

   if ((($_FILES["photo"]["type"][$key] == "image/gif")
    || ($_FILES["photo"]["type"][$key] == "image/jpeg")
    || ($_FILES["photo"]["type"][$key] == "image/jpg")
    || ($_FILES["photo"]["type"][$key] == "image/pjpeg")
    || ($_FILES["photo"]["type"][$key] == "image/x-png")
    || ($_FILES["photo"]["type"][$key] == "image/png"))
    && ($_FILES["photo"]["size"][$key] < 3000000)
    && in_array($extension, $allowedExts)) {

      /* GET File Variables */ 
      $tmpName = $_FILES['photo']['tmp_name'][$key]; 
      $fileType = $_FILES['photo']['type'][$key]; 
      $fileName = $_FILES['photo']['name'][$key]; 

      /* Start of headers */ 
      $headers = "From: $from"; 

      if (file($tmpName)) { 
        /* Reading file ('rb' = read binary)  */
        $file = fopen($tmpName,'rb'); 
        $data = fread($file,filesize($tmpName)); 
        fclose($file); 

        /* a boundary string */
        $randomVal = md5(time()); 
        $mimeBoundary = "==Multipart_Boundary_x{$randomVal}x"; 

        /* Header for File Attachment */
        $headers .= "\nMIME-Version: 1.0\n"; 
        $headers .= "Content-Type: multipart/mixed;\n" ;
        $headers .= " boundary=\"{$mimeBoundary}\""; 

        /* Multipart Boundary above message */
        $message = "This is a multi-part message in MIME format.\n\n" . 
                   "--{$mimeBoundary}\n" . 
                   "Content-Type: text/plain; charset=\"iso-8859-1\"\n" . 
                   "Content-Transfer-Encoding: 7bit\n\n" . 
                   $message . "\n\n"; 

        /* Encoding file data */
        $data = chunk_split(base64_encode($data)); 

        /* Adding attchment-file to message*/
        $message .= "--{$mimeBoundary}\n" . 
                  "Content-Type: {$fileType};\n" . 
                  " name=\"{$fileName}\"\n" . 
                  "Content-Transfer-Encoding: base64\n\n" . 
                  $data . "\n\n" . 
                  "--{$mimeBoundary}--\n"; 
      }
   } else {
     echo "Invalid File.";
   }
}

$sent = mail($to, $subject, $message, $headers);

if ($sent) {
  echo '<meta http-equiv="refresh" content="0;url=http://website.co.uk/html/thankyou.html">';
} else {
    echo "Sorry, we have encoutered a problem sending your message. Please try again or get in     touch via the contact page";
}

?>

名称：

电子邮件：

照片:
第二张照片（可选）：
注意：此处为客户留言

上传程序PHP:

<form enctype="multipart/form-data" method= "post" action="couple_uploader_test.php"> 
   <input type="hidden" name="myEmail" value="info@website.co.uk"> 
   <input type="hidden" name="subject" value="Couple Portrait Order">
   <label>Name:</label><input type="text" name="customerName" required="true"/><br/>
   <label>Email:</label><input type="email" name="customerEmail" required="true"/><br/>
   <label>Photo:</label><input type="file" name="photo[]" accept="image/*" required="true"/>
   <label>2nd Photo (optional):</label><input type="file" name="photo[]" accept="image/*"/>
   <label>Notes:</label><textarea name="message" cols="30" rows="6">customer message here</textarea>
   <input type="hidden" name="thankyou_url" value="http://www.website.co.uk/html/couple_uploaded.html"/>
   <input type="submit" value="Submit Photo"/>
</form>

<?php
$to = $_POST['myEmail'];
$from = $_POST['customerEmail'];
$name = $_POST['customerName'];
$subject = $_POST['subject'];
$message = $_POST['message']."\n\n" . $name;

$message = wordwrap($message,70);

foreach ($_FILES['photo']['name'] as $key => $tmp_name) {

   $allowedExts = array("gif", "jpeg", "jpg", "png");
   $temp = explode(".", $_FILES["photo"]["name"][$key]);
   $extension = end($temp);

   if ((($_FILES["photo"]["type"][$key] == "image/gif")
    || ($_FILES["photo"]["type"][$key] == "image/jpeg")
    || ($_FILES["photo"]["type"][$key] == "image/jpg")
    || ($_FILES["photo"]["type"][$key] == "image/pjpeg")
    || ($_FILES["photo"]["type"][$key] == "image/x-png")
    || ($_FILES["photo"]["type"][$key] == "image/png"))
    && ($_FILES["photo"]["size"][$key] < 3000000)
    && in_array($extension, $allowedExts)) {

      /* GET File Variables */ 
      $tmpName = $_FILES['photo']['tmp_name'][$key]; 
      $fileType = $_FILES['photo']['type'][$key]; 
      $fileName = $_FILES['photo']['name'][$key]; 

      /* Start of headers */ 
      $headers = "From: $from"; 

      if (file($tmpName)) { 
        /* Reading file ('rb' = read binary)  */
        $file = fopen($tmpName,'rb'); 
        $data = fread($file,filesize($tmpName)); 
        fclose($file); 

        /* a boundary string */
        $randomVal = md5(time()); 
        $mimeBoundary = "==Multipart_Boundary_x{$randomVal}x"; 

        /* Header for File Attachment */
        $headers .= "\nMIME-Version: 1.0\n"; 
        $headers .= "Content-Type: multipart/mixed;\n" ;
        $headers .= " boundary=\"{$mimeBoundary}\""; 

        /* Multipart Boundary above message */
        $message = "This is a multi-part message in MIME format.\n\n" . 
                   "--{$mimeBoundary}\n" . 
                   "Content-Type: text/plain; charset=\"iso-8859-1\"\n" . 
                   "Content-Transfer-Encoding: 7bit\n\n" . 
                   $message . "\n\n"; 

        /* Encoding file data */
        $data = chunk_split(base64_encode($data)); 

        /* Adding attchment-file to message*/
        $message .= "--{$mimeBoundary}\n" . 
                  "Content-Type: {$fileType};\n" . 
                  " name=\"{$fileName}\"\n" . 
                  "Content-Transfer-Encoding: base64\n\n" . 
                  $data . "\n\n" . 
                  "--{$mimeBoundary}--\n"; 
      }
   } else {
     echo "Invalid File.";
   }
}

$sent = mail($to, $subject, $message, $headers);

if ($sent) {
  echo '<meta http-equiv="refresh" content="0;url=http://website.co.uk/html/thankyou.html">';
} else {
    echo "Sorry, we have encoutered a problem sending your message. Please try again or get in     touch via the contact page";
}

?>

---

理想情况下，我需要它循环2种输入文件类型（第二种是可选的，因此如果用户只上传一个图像，它仍然可以工作）并将它们附加到一封电子邮件。谢谢。

当循环运行时，它会从头重写$message和$headers变量，而不是串联。因此，当您实际发送电子邮件时，附加的文件只有一个。

将

$headers

和

$message

移动到

循环的
外部。您已经将
$message
置于外部，但您正在用此代码覆盖它：

 /* Multipart Boundary above message */
    $message = "This is a multi-part message in MIME format.\n\n" . 
               "--{$mimeBoundary}\n" . 
               "Content-Type: text/plain; charset=\"iso-8859-1\"\n" . 
               "Content-Transfer-Encoding: 7bit\n\n" . 
               $message . "\n\n"; 

应该是：

 /* Multipart Boundary above message */
    $message .= "This is a multi-part message in MIME format.\n\n" . 
               "--{$mimeBoundary}\n" . 
               "Content-Type: text/plain; charset=\"iso-8859-1\"\n" . 
               "Content-Transfer-Encoding: 7bit\n\n" . 
               $message . "\n\n"; 

PS：您可以在PHP中重定向，如下所示：

 header('Location: http://website.co.uk/html/thankyou.html');

另一个提示：在尝试访问之前，您应该先检查
$\u POST
数组中设置的内容，以防止出现错误：

 $to = isset($_POST['myEmail']) ? $_POST['myEmail'] : NULL;

这是一个三元运算符，基本上是以下内容的简写：

 if(isset($_POST['myEmail'])) {
   $to = $_POST['myEmail']
 } else {
   $to = NULL;
 }

如果您正确地使用foreach循环，一次一个地获取每个上载的文件，以便处理它，那么最终会得到类似的结果

我没有检查header的实际内容是否正确，我只是假设您做得对，但我确实简化了一些编码，并删除了不必要的标量变量创建，以将$\u FILES数组中已经存在的数据保持在完全可用的状态

/* a boundary string */
$randomVal = md5(time()); 

$allowedExts = array("gif", "jpeg", "jpg", "png");

/* Start of headers */ 
$headers = "From: $from"; 

$mimeBoundary = "==Multipart_Boundary_x{$randomVal}x"; 

/* Header for File Attachment */
$headers .= "\nMIME-Version: 1.0\n"; 
$headers .= "Content-Type: multipart/mixed;\n" ;
$headers .= " boundary=\"{$mimeBoundary}\""; 

/* Multipart Boundary above message */
$message = "This is a multi-part message in MIME format.\n\n" . 
           "--{$mimeBoundary}\n" . 
           "Content-Type: text/plain; charset=\"iso-8859-1\"\n" . 
           "Content-Transfer-Encoding: 7bit\n\n" . 
            $message . "\n\n"; 

foreach ($_FILES['photo'] as $filenumber => $file) {

   $temp = explode(".", $file["name"]);
   $extension = end($temp);

   if ( ($file["type"] == "image/gif"
      || $file["type"] == "image/jpeg"
      || $file["type"] == "image/jpg"
      || $file["type"] == "image/pjpeg"
      || $file["type"] == "image/x-png"
      || $file["type"] == "image/png" )
    && $file["size"]  < 3000000
    && in_array($extension, $allowedExts)) 
   {

      if ( file($file['tmp_name']) ) { 
        /* Reading file ('rb' = read binary)  */
        $fh = fopen($file['tmp_name'],'rb'); 
        $data = fread($fh,filesize($file['tmp_name'])); 
        fclose($fh); 

        /* Encoding file data */
        $data = chunk_split(base64_encode($data)); 

        /* Adding attchment-file to message*/
        $message .= "--{$mimeBoundary}\n" . 
                  "Content-Type: {$file['type']};\n" . 
                  " name=\"{$file['name']}\"\n" . 
                  "Content-Transfer-Encoding: base64\n\n" . 
                  $data . "\n\n" . 
                  "--{$mimeBoundary}--\n"; 
      }
   } // endif
} // endforeach

/*边界字符串*/
$randomVal=md5（time（））；
$allowedExts=数组（“gif”、“jpeg”、“jpg”、“png”）；
/*标题的开始*/
$headers=“From:$From”；
$mimeBoundary=“==Multipart_Boundary_x{$randomVal}x”；
/*文件附件的标题*/
$headers.=“\n时间版本：1.0\n”；
$headers.=“内容类型：多部分/混合；\n”；
$headers.=“boundary=\”{$mimebundary}\”；
/*消息上方的多部分边界*/
$message=“这是MIME格式的多部分消息。\n\n”。
“{$mimebundary}\n”。
“内容类型：文本/普通；字符集=\”iso-8859-1\“\n”。
“内容传输编码：7bit\n\n”。
$message。“\n\n”；
foreach（$_文件['photo']为$filenumber=>$file）{
$temp=explode（“.”，$file[“name”]）；
$extension=end（$temp）；
如果（$file[“type”]=“image/gif”
||$file[“type”]=“image/jpeg”
||$file[“type”]=“image/jpg”
||$file[“type”]=“image/pjpeg”
||$file[“type”]=“image/x-png”
||$file[“type”]=“image/png”）
&&$file[“size”]<3000000
&&in_数组（$extension$allowedExts））
{
如果（文件（$file['tmp_name']）{
/*正在读取文件（'rb'=读取二进制文件）*/
$fh=fopen（$file['tmp_name']，'rb'）；
$data=fread（$fh，filesize（$file['tmp_name']）；
fclose（$fh）；
/*编码文件数据*/
$data=chunk_split（base64_encode（$data））；
/*将附件文件添加到消息*/
$message.=“--{$mimebundary}\n”。
“内容类型：{$file['Type']}；\n”。
“名称=\”{$file['name']}\“\n”。
“内容传输编码：base64\n\n”。
$data。“\n\n”。
“{$mimebundary}--\n”；
}
}//endif
}//endforeach
如果您不想费心以可读的方式格式化代码，我们为什么要费心阅读它呢？对不起，我不确定您想要的是什么。（我觉得它很可读）这是我的第一篇帖子，我被卡住了，所以我只是复制了我的代码，因为到目前为止我已经有了它，所以我们可以尝试找出它的错误-我是一个新手，它对我有用。删除元刷新，让我们回显你的文件名。到底什么不起作用？所以我想我必须这样做！完成了任何基本的调试，比如
var\u dump（$\u文件）
查看您真正收到了什么？您还只是假设上传永远不会失败。在$u文件中有一个
['error']
参数是有原因的。另外，…
文件（）
将整个文件读取到一个数组中，然后将数组扔掉。这效率非常低。为什么不将
读取（$file）呢
还是别的什么？