修改了下dropzonejs的demo上传页面：（原地址：http://www.dropzonejs.com/exa...）加了个textarea，想实现文件上传处理完成后将处理结果回显到textarea内，请问该如何处理？
以下是index.php文件内容：
1
506
Dropzone simple example
This is the most minimal example of Dropzone. The upload in this example
doesn't work, because there is no actual server to handle the file upload.
以下是upload_file.php文件内容：
0) {
echo "Error: " . $_FILES["file"]["error"] . "
";
} else {
echo "Upload: " . $_FILES["file"]["name"] . "
";
echo "Type: " . $_FILES["file"]["type"] . "
";
echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb
";
echo "Stored in: " . $_FILES["file"]["tmp_name"];
$content = file_get_contents($_FILES["file"]["tmp_name"]);
echo $content;
}
?>
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可以通过ajax获取上传后的图片地址，然后显示