@fienen came up with a good idea for a WordPress plugin today. He wants to be able to type in a sample parameter string for query_posts and see which posts will result, given that string. I decided that’s something I want too so I don’t have to hack up a template on the fly if I don’t want to.

Here’s a quick and dirty plugin which should do the trick. It installs itself into Dashboard > Settings > Query Tester
query-tester