拖動文件上傳，錯誤$ _FILES

Question

我嘗試創建簡單的「拖動&」文件上傳。這是我的代碼：

HTML（的index.html）：

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js"></script> 
    <script src="script.js"></script> 

    <form action="upload.php"> 
     <div id="dropZone"> 
     Drag File 
     </div> 
    </form> 

的JavaScript（的script.js）：

$(document).ready(function() { 

    var dropZone = $('#dropZone'), 
     maxFileSize = 1000000; 

    dropZone[0].ondrop = function(event) { 
     event.preventDefault(); 
     dropZone.removeClass('hover'); 
     dropZone.addClass('drop'); 

     var file = event.dataTransfer.files[0]; 


     if (file.size > maxFileSize) { 
      dropZone.text('Max size 1mb!'); 
      dropZone.addClass('error'); 
      return false; 
     } 

     var xhr = new XMLHttpRequest(); 
     xhr.upload.addEventListener('progress', uploadProgress, false); 
     xhr.onreadystatechange = stateChange; 
     xhr.open('POST', 'upload.php'); 
     xhr.setRequestHeader('X-FILE-NAME', file.name); 
     xhr.send(file); 
     alert(xhr.responseText); 
    }; 

    function uploadProgress(event) { 
     var percent = parseInt(event.loaded/event.total * 100); 
     dropZone.text('Loading: ' + percent + '%'); 
    } 


    function stateChange(event) { 
     if (event.target.readyState == 4) { 
      if (event.target.status == 200) { 
       dropZone.text('Ok!'); 
      } else { 
       dropZone.text('Error!'); 
       dropZone.addClass('error'); 
      } 
     } 
    } 

}); 

PHP（upload.php的）：

<?php 
$uploaddir = 'upload/'; 
$uploadfile = $uploaddir.basename($_FILES['file']['name']); 
if (!$_FILES) 
{ 
move_uploaded_file($_FILES['file']['tmp_name'], $uploadfile); 
} 
?> 

我的問題是該文件無法上傳文件夾中，$ _FILES ['file'] ['tmp_name']爲空... 有沒有人有一個想法，我的mi賭注？

謝謝...

Answer 1

試試這個，改變你的條件

if (isset($_FILES['file'])) 
{ 
move_uploaded_file($_FILES['file']['tmp_name'], $uploadfile); 
}