I have been working with PHP since 2002, and have created multiple export files, including CSV, Tab-delimited Text, PDF, and others.
It sounds as though I could query directly for the output report; if not, there are other ways for me to export the data, depending on structure.
If you're willing to provide me some details on the output format or a sample of the app/data, I could give you a better impression of how I'd create the output.
Thanks!