It has been a really long time since I worked with PHP. It was a lot of fun working with PHP a few years ago and I thought it would be a very good idea to stop by PHP SF.
It is amazing how fast a developer starts coding, as soon as he hears the problem. The time spent in the initial phases analyzing the problem, not to mention documentation and testing, can be better. At SF PHP June meetup, it was very nice talking to Mike Stowe give a talk on API First design and RAML.
If you are building an API, this is an excellent resource. There are a lot of interesting tools (RAML projects) that were showcased in this talk and I am very glad I stopped by.