简单的拖放文件上传1个文件 - 准备好的类,与dropzone混淆:-(

I am looking for a very simple solution for a drag-drop file Upload for 1 single file. No need to check anything, no need for multiple files, no previews or whatever.

Just DROP a file, see the percentage of upload, and at 100% it should be forwarded to a PHP script via and the php will handle the $_FILE['uploadfile'] - php will handle all error messages.

I tried with dropzone several days now, and I am getting confused with all its hundred of options. I had it working to submit the drop-form after I dropped one file, but actually it did not really forward the $_file to the PHP script (php script said no $_file parameter is set... I have no idea why...

So, I would like to go with another read solution. Any recommendations? As simple as possible.