Convert XML file into CSV file using PHP

I have an xml file (attached) and need to turn it into a CSV file. I need to get code that I can adapt to do the same thing for similarly structured xml files. The code needs to run in my environment (<[login to view URL]>) and you'll need to use standard functions or free packages. I don't want a piece of code that is difficult to adapt in case I ever want a different output structure for my file. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform see <[login to view URL]> for environment details