I've built a new site with a co-worker and new Wikidot user Jerad Whitaker that's devoted to using the API with PHP. Jerad and I are both relative novices in both areas, but I think we have pulled together a pretty nice site with some good examples of calling each API method using PHP. We recently ported over all of the content from my WDOS server so we could take advantage of all of the benefits of hosting our site on Wikidot. Taking the time to learn how to use the API was a great time-saver for us in the long run.
I'd like to invite those of you who have been working with PHP and the API to join the site and contribute where you see fit. We still have a few things to clean up and a few kinks to work out, but I think it's close enough to being ready for "prime time" that I'd encourage you to check it out and join in the fun.
The site is now open: https://php-api.wikidot.com/
Thanks,
Ed