If you want to use an XML catalogue to create multiple output documents in one go, take a look at Paging in XSLT 2.0.
If your task involves using PHP to read data from an XML feed, maybe the page about PHP5 and SimpleXML will be of some interest.
And if you've finished a bunch of project work this week and now it's time to make a copy for safekeeping, perhaps Creating an rsync backup is what you need. (Also see the File backup checklist to avoid leaving anything behind.)
(Yeah, okay: there aren't many new pages on my site. It's been a while since I was last unemployed.)