252203 Upload Solution

I need a PHP script that will allow users to enter an order number, and upload files. The script will create a folder based on the order number and place the files in that folder. No back end is need, I will access folder through FTP. I was thinking about having a page where you enter the order number (this page should also have some sort of captcha like security) and once you enter the order number and proceed, the script will create a folder and allow for multiple uploads (up to 6) to be uploaded into that folder. I would also like format limitations to be .zip .rar .psd .pdf .ai .jpg .jpeg .tif .eps It would also be nice if I could have this functionality in my WordPress website