Zend Framework 2
Zend Framework 2 is an open source framework for developing web applications and services using PHP 5.3+. Zend Framework 2 uses 100% object-oriented code and utilises most of the new features of PHP 5.3, namely namespaces, late static binding, lambda functions and closures.
Zend Framework 2 evolved from Zend Framework 1, a successful PHP framework with over 15 million downloads.
The component structure of Zend Framework 2 is unique; each component is designed with few dependencies on other components. ZF2 follows the SOLID object-oriented design principle. This loosely coupled architecture allows developers to use whichever components they want. We call this a “use-at-will” design. We support Pyrus and Composer as installation and dependency tracking mechanisms for the framework as a whole and for each component, further enhancing this design.