If you're looking around in the PHP community for a good XML-RPC library option, this new post from Simon Willison might just interest you. He talks about IXR version 1.7(beta), a XML-RPC library designed for the utmost ease of use.

Almost two years to the day since the last release, I've put together a new version of IXR, my PHP XML-RPC library. I haven't published it on the site just yet as I want to make sure any bugs are ironed out first, but you can grab a copy here: IXR version 1.7 (beta).

It's mostly a bug fix release, although it also includes some changes made by the WordPress guys who have been maintaining their own fork since January. I've filed a bug asking them to take a look at the new version and maybe roll it in to their codebase. If you use IXR for anything it would be great if you could run this new version through its paces. Send any bug reports to the usual address.

It's always good to have options out there. There are XML-RPC functions that can be built into PHP, but it's always nice to look into a project designed around simplicity...