jQuery AJAX file upload PHP

Question

I want to implement a simple file upload in my intranet-page, with the smallest setup possible.

This is my HTML part:

Answer 1

and this is the php file to receive the uplaoded files

 'There was an error uploading your files') : array('files' => $files);
    } else {
        $data = array('success' => 'NO FILES ARE SENT','formData' => $_REQUEST);
    }

    echo json_encode($data);
?>