From the Inside Open Source APress blog, there's a new post by Michael Stahnke documenting his search for a useful way to work with configuration files in a PHP application.
Recently I was working on developing an application that required a configuration file to setup. [...] XML is too hard to read for management-types. Plain text wasn't all that easy to handle from a code perspective. Then I remembered that when I played with Ruby on Rails it used something called YAML, and thought I'd give that go.