In this new post on DZone.com today John Esposito talks about an interesting PHP framework that has come to light lately - the Yet Another Framework, an oddly named PHP extension that provides some of the basics to build a framework-based application.
Why care about another PHP framework? especially one that's actually called Yet Another Framework? Because Yaf isn't just a framework. It's a PHP extension (listed on PECL), so it's written in C -- so it's very, very fast. How fast? Here's a benchmark (requests/sec).
The only framework (of the list he compared) that came in faster was MicroMVC and that's not as full-featured as the Yaf functionality is. Disregarding that, it has a huge requests/second difference between even the next on the list, CodeIgniter.