The Zend Framework
By Justin Silverton
The Zend Framework is a recently released (still in alpha) set of open source tools for php designed for developing Applications and Web Services.
Zend_Controller and Zend_View
These components provide the base for a simple MVC website and are already used on this site and several others. A front controller dispatches requests to page controllers. It is as minimalist as possible and we're working to make it even simpler. The Zend_View component provides encapsulation for view logic. It can use templates written in PHP or can be combined with a third-party template engine.
Database access is a very light layer on top of PDO. Solutions existing systems not using PDO (such as mysqli or oci8) are presently under development. Included are adapters, a profiler, a tool to assist with building everyday SELECT statements, and simple objects for working with table row data.
The links on the sidebars of our home page are generated using Zend_Feed. This component provides a very simple way to consume RSS and Atom data from feeds. It also includes utilities for discovering feed links, importing feeds from different sources, and feeds can even be modified and saved back as valid XML.
This component provides a client for the HTTP protocol and does not require any PHP extensions. It drives our web services components. In time, we will develop support for extension-based backends such as cURL.
The input filtering component encourages the development of secure websites by providing the basic tools necessary for input filtering and validation.
Easily convert PHP structures into JSON for use in AJAX-enabled applications.
Log data to the console, flat files, or a database. Its no-frills, simple, procedural API reduces the hassle of logging to one line and is perfect for cron jobs and error logs.
Zend_Mail and Zend_Mime
Almost every internet application needs to send email. Zend_Mail, assisted by Zend_Mime, creates email messages and sends them. It supports attachements and does all the MIME dirty work.
Portable Document Format (PDF) from Adobe is the de facto standard for cross-platform rich documents. Now, PHP applications can create PDF documents on the fly, without the need to call utilities from the shell, depend on PHP extensions, or pay licensing fees. Zend_PDF can even modify existing PDF documents. Create a sharp customer invoice in Adobe Photoshop, fill in the order from Zend_Pdf, and send it with Zend_Mail.
The Apache Lucene engine is a powerful, feature-rich Java search engine that is flexible about document storage and supports many complex query types. Zend_Search_Lucene is a port of this engine written entirely in PHP 5, allowing PHP-powered websites to leverage powerful search capabilities without the need for web services or Java. Zend_Search_Lucene's file format is fully binary compatible with its Java counterpart.
Zend_Service: Amazon, Flickr, and Yahoo!
Web services are becoming increasingly important to the PHP developer as mashups and composite applications become the standard for next generation web applications. The Zend Framework provides wrappers for service APIs from three major providers to make the as simple to use as possible. We're working on more and engaging API vendors directly to make PHP the premier platform for consuming web services.
PHP 5's SOAP extension dramatically lowered the bar for communicating with SOAP services from PHP. Zend_XmlRpc brings the same capabilities to XML-RPC, mimmicking the SOAP extension and making these services easier to use than ever from PHP 5.
The Zend Framework looks promising, but I think that in its current state, it is more of a set of classes than an actual framework. Currently, PEAR is a much better choice in terms of community support and component availability. I am glad that Zend is continuing to embrace the open source community and I will be curious to see the future builds of this framework.
It can be downloaded Here