PHP + DDE live feed

Hello, I have an Excel spreadsheet that is automatically updated with quotes. I am doing a project for my BS and I need to grab the information from this spreadsheet and populate a MySQL database. Any ideas on how to accomplish that with PHP? The spreadsheet uses a live DDE feed to fetch information from a third party service and needs to be opened. This is not a matter of reading a static XLS spreadsheet but what I need is a DDE way to talk to the open spreadsheet and update the database when the cells are changed or have a 1 minute loop to go over the cells. I understand that I can do that with Java with a commercial package called Java DDE as well but if there is a way with PHP I prefer. Thanks, C.F.