请教有用过dropzonejs拖拽上传文件的吗？php如何拿到它的值。

<script src="dropzone.js"></script>     
    <form action="data.php" method="post">
    <div class="row-fluid">
        <div class="span4" style="text-align: center;">
            <div id="my-dropzone">
                <img id="imgNoPhoto" src="/img/no-photo.jpg"/>
            </div>
            <a id="openDropZone" href="#" class="btn btn-inverse" style="margin-top: 10px;">
                <img src="" class="icon-plus icon-white">照片上傳
            </a>
        </div>
    </div>
    <button type="submit">上交</button>
    </form>
<script>
    var myDropzone = new Dropzone("div#my-dropzone", { 
        url: "./data.php",
        enqueueForUpload: true,
        clickable: '#openDropZone',
        thumbnailWidth: 200,
        thumbnailHeight: 200,
        previewTemplate: "<div class=\"dz-preview dz-file-preview\">\n  <div class=\"dz-details\">\n    <div class=\"dz-filename\" style=\"display: none;\"><span data-dz-name></span></div>\n    <div class=\"dz-size\" style=\"display: none;\" data-dz-size></div>\n    <img data-dz-thumbnail />\n  </div>\n  <div class=\"dz-progress\"><span class=\"dz-upload\" data-dz-uploadprogress></span></div>\n  <div class=\"dz-error-message\"><span data-dz-errormessage></span></div>\n</div>"
    });
    myDropzone.on("selectedfiles", function(files) {
        myDropzone.removeAllFiles();
    });

    myDropzone.on("addedfile", function(file) {
        $('#imgNoPhoto').hide(); // hide the default no-imge img
    });

    $('#btnRegister').click(function(){        
        $('#apply-form').submit();
        return false;
    });
</script>            
<script src="jquery.js"></script>