What is Phalcon? Let's start by quoting from the documentation of the official website (http://phalconphp.com/):
"Phalcon is an open source, full stack framework for PHP written as a C-extension, optimized for high performance."
Version 2.0 of Phalcon was released in April, and it was developed with a new language called Zephir (http://zephir-lang.com/). Zephir was designed especially for developing PHP extensions, and it is quite user friendly for both (PHP and C) developers.
There are many frameworks out there. The main reasons why we choose Phalcon were for its steep learning curve, speed, and because it is decoupled. (We can use any of its components independently.) If you have some knowledge of the Model-View-Controller ...