If you need PHP to run _really_ fast then the usual approach of building on top of an off-the-shelf framework doesn’t cut it. It is possible to achieve some serious PHP performance by taking a fresh look at how to build large scale applications and embracing simplicity. We’ll look at how to achieve response times measured in single-digit milliseconds and how to scale your codebase to keep your application this fast forever more. This is not about changing your quotes from double to single but about completely changing the way you think about coding!

 

http://youtu.be/Le1LKucXYM4?list=PLmmVKoOOmweMrNQzziuGLP4ay9nrw8mQQ