Luis Yordano Cruz demonstrates three-tier PHP application design with PEAR::DB_DataObject, Smarty, and PHP 5. The article assumes that you have some familiarity with HTML, Smarty, PEAR::DB_DataObject, MySQL, and PHP 5.

This tutorial explains the usage of the Simple XML extension new to PHP 5. It provides examples of reading and querying XML data.

Database transactions are important for data reliability and consistency. Used properly, they can prevent many types of errors. Used improperly, they can cause many other kinds of errors. Kimberlee Jensen demonstrates using transactions with PHP well.

O'Reilly Network's source for PHP developer news and information.

Author demonstrates cross-platform development, deployment with small, powerful network-enabled language with integrated GUI system; builds front end for small email-based survey, feedback system. [ONLamp.com]

Article by Howard Fosdick shows off several features of the Rexx programming language.

Curt Hibbs explores parts of RoR to show the sources of its productivity gains and flexibility. Descriptions, instructions, screenshots. [ONLamp.com]

Curt Hibbs shows off RoR by building simple application that needs little Ruby experience. Descriptions, instructions, screenshots. [ONLamp.com]

Curt Hibbs shows off RoR by finishing sample application in 47 lines of code. Descriptions, instructions, screenshots. [ONLamp.com]

Curt Hibbs and Bill Walton show how easy it is to build a new program with latest versions of RoR web framework. ONLamp.com.