PHP 4 to PHP 5 Migration (PDF)
A little over three years ago, the PHP community released version 5 of its popular programming language. PHP5 has now become the version of choice for many new PHP projects. PHP4 however remains popular and is still widely used. This whitepaper is aimed at developers who are still using PHP4 and considering switching to PHP5. It is also intended to provide IT managers responsible for PHP applications additional information for their decision on whether to stick with their current version or migrate. This paper seeks to answer the questions, “What are the benefits of migrating to PHP5? And, equally importantly, what are the risks?” The information below will put you in a better position to make an informed decision between PHP4 and PHP5.

PHP Leads Web 2.0 (PDF, 458 KB)
This paper defines and applies Web 2.0 for today’s users. Though it is difficult to define Web 2.0 there are usually a few common denominators such as, rich web applications, SOA (service oriented architecture), and social Web elements. This paper also explains what Web 2.0 means for the Enterprise and what it means for technology today. 

Zend Download Server (PDF, 131 KB)
This paper will explain how the Apache web server works. The paper will answer key question such as: How do large file downloads affect your server’s performance? What is the difference between web page and file download serving? What do you do when your web server gets saturation? Additionally, this paper clearly defines and explains what Zend Download Server does.

Scalability and Responsiveness with Zend Platform’s Job Queue (PDF, 114 KB)
This paper defines Job Queue for users. The paper also details as well as explains how Job Queue is used and how it works.

Integrating PHP with System I using Web Services (PDF, 2 MB)
The following paper examines the ways in which PHP and Zend helps System I developers. The paper demonstrates how quick and simple it is to create a Web Service wrapper for an existing RPG program.

An overview on PHP (PDF, 171 KB)
This paper gives a clear and concise overview of PHP. The paper covers many aspects of PHP, it goes through the history of PHP, the people behind PHP, the PHP market, the future of PHP, and more.

PHP and Oracle (PDF, 1 MB)
The following paper explains how to install and utilize Zend Framework to develop applications in PHP.