Zend framework requirements:

Requirements

Zend Framework requires PHP 5.2.4 or later since version 1.7.0. Previous versions required PHP 5.1.4 or later, although the ZF Programmer's Reference Guide strongly recommended PHP 5.2.3 or later for security and performance improvements included in these versions of PHP. Zend Framework 2.0 will require PHP 5.3

Zend

About Zend Framework

Extending the art & spirit of PHP, Zend Framework(MVC framework) is based on simplicity, object-oriented best practices, corporate friendly licensing, and a rigorously tested agile codebase. Zend Framework is focused on building more secure, reliable, and modern Web 2.0 applications & web services.

Zend Framework components include:

Zend_Controller

This module provides the overall control for the application. It translates requests into specific actions and makes sure they get executed.

Zend_Db

This is based on PHP Data Objects (PDO) and provides access to databases in a generic way.

Zend_Feed

This makes it easy to consume RSS and Atom feeds.

Zend_Filter

This provides string-filtering functions, such as isEmail() and getAlpha().

Zend_InputFilter

To Zend_Filter, this is designed to work with arrays such as form inputs.

Zend_HttpClient

This enables you perform HTTP requests easily.

Zend_Json

This enables you to easily translate PHP objects into JavaScript Object Notation, and vice-versa.

Zend_Log

This provides general-purpose logging functionality.

Zend_Mail

This enables you to send text and multipart MIME email.

Zend_Mime

This is used by Zend_Mail to help decode MIME messages.

Zend_Pdf

This enables you to create new PDF documents, and load and edit existing PDF documents.

Zend_Search

This enables you to perform sophisticated searches on your own text. For example, you can build a search engine that returns results based on relevancy or other factors.

Zend_Service

Contains several submodules that provide easy access to many popular web service APIs, such as those provided by Amazon, Yahoo, Twitter, and Flicker.

Zend_View

This handles the view portion of the MVC pattern.

Zend_XmlRpc

This enables you to easily create an XML-RPC server and client.