Zend Framework is an open source framework for developing web applications with PHP 5.
Zend Framework is implemented using 100% object-oriented code.
The component structure of Zend Framework is somewhat unique; each component is designed with few dependencies on other components. This loosely coupled architecture allows developers to use components individually.
Zend Framework offers a robust, high performance MVC implementation, a database abstraction that is simple to use, and a forms component that implements HTML form rendering, validation, and filtering so that developers can consolidate all of these operations using one easy-to-use, object oriented interface.