Matt Butcher has a new post to his blog today with five things that every PHP developer should know about MongoDB, the popular NoSQL database project.

2010 is the year of the document database. While momentum has been steadily building over the last seven years or so, there are now a wide variety of stable document databases -- from cloud-based ones from Amazon and Google, to a wide variety of Open Source tools, most notably CouchDB and MongoDB. So what is MongoDB? Here are five things every PHP developer should know about it.

He points out a few things - that MongoDB is a stand-alone server, that it's schemaless, you won't need to learn another query language to use it and that PHP and MongoDB play very well together (thanks to the Mongo PECL package already released).