Danne Lundqvist has a new post where he shares a bit of code he's written to "come to grips" with an existing XML structure.
Very often I find myself writing input filters for large XML files using PHP. Common enough task; and PHP offer a great variety of tools to do this effectively depending on the situation. Unfortunately, almost as common is the lack of documentation for the aforementioned XML files. [...] I have looked around for a simple tool but I didn’t really find a tool that gave me the quick and dirty overview I wanted. A year or so ago I finally wrote a small PHP class to analyze large XML files.