On the Ibuildings blog today there's a new post from Soila Patajoki about a white papers they've developed covering continuous integration and how it relates to PHP applications.

This new white paper discusses the policies and systems that together make up Continuous Integration. It explains how Continuous Integration can allow your teams to build projects faster and cheaper, and also covers several best of breed tools for PHP-based companies to use to implement such a system.

The PDF download is free, but you'll need to give up a little personal information to get to it. The white papers covers topics like source code control, regression testing and tools like PHPUnit, Phing and phpDocumentor.

Samuel Folkes has posted a few of his ideas on the tool(s) that every PHP developer needs to have on his belt to make their work easy and more effective.

Quite often, I am asked the question "What tools do I need for PHP development?". [...] For those who will listen, I have one very simple answer to that question: Aside from a server running PHP and a text editor, you need absolutely nothing. That answer may seem extreme but its the truth. Lets break it down.

Samuel suggests that, while the choices for IDE, debuggers and other tools for PHP development are too many to count, nothing is as good and clean as a basic text editor (his choice is Notepad++). There are a few things that can make your code more effective like phpDocumentor or PHPUnit, but those are more about good coding practices than how you develop.

Cal Evans has put together a list of five things he thinks that every PHP developer out there should be equipped with in their development.

Over the past nine years of having fun with PHP, began to see that there are five categories of tools that I rely on more than any others. Sure, I've got a code beautifier, a standards checker, and a hand full of hand-written scripts I use for various things to make life easier. However when it comes down to it, there are five that I rely on every day. So here they are in acceding order of importance. Let me know, what are your five? (let's not start a meme or anything though, ok?)

His list of five is: a unit testing tool, a debugger, an ERD tool (Entity Relationship Diagram), a version control system and, finally, a framework (pick a framework, any framework).

This press release from Zend talks about the latest update to the PDT (PHP Development Tools) extension for Eclipse - the recent release of version 2.0.

The Eclipse Foundation is pleased to announce a major upgrade to the popular Eclipse PHP Development Tools (PDT) project. PDT is an open source development tool that provides all the basic code editing capabilities developers need to get started developing PHP applications. The focus of the PDT 2.0 release is to add support for the object-oriented programming features of PHP and to improve the overall user experience of the PDT environment.

Improvements in the latest release include a type hierarchy view, override indicators, a new indexing and searching engine, a more sophisticated Code Assist feature and much more.

Smashing magazine has compiled a list of fifty things they think every PHP developer should not be without:

It makes perfect sense to provide the huge community of PHP developers with an overview of useful tools and resources that can make their development process easier and more effective. This post presents 50 useful PHP tools that can significantly improve your programming workflow. Among other things, you'll find a plethora of libraries and classes that aid in debugging, testing, profiling and code-authoring in PHP.

Their long list includes tools is broken up into sections:

• Debugging
• Testing and Optimization
• Documentation
• Security
• Image Manipulation and Graphs
• PHP Code Beautifier
• Version-Control Systems
• Useful Extensions, Utilities and Classes
• PHP Online Tools and Resources
• In-Browser Tools (Firefox Add-Ons)
• Frameworks for PHP
• PHP IDEs and Editors
• Other Sources and Resources

As Roy Ganor noted in a recent tweet - the long-awaitedversion 2.0 of the PHP Development Tools (PDT) extension for Eclipse has been released:

PDT 2.0 was designed based on principles different to those of Eclipse PDT 1.0. For example, different techniques were used to model workspace projects. PDT 2.0 now uses an indexing and caching mechanism for improved performance and experience with code assist and navigation. Moreover, since PHP provides enhanced Object-Oriented features like inheritance and polymorphism, PDT 2.0 provides enhanced features such as type hierarchy, override indicators and type navigation for programmers who utilize these language properties.

The extension is now lighter and faster, making better use of the Eclipse framework for caching/indexing language elements. The release also includes a method for configuring your buildpath, a "mark occurrences" feature, an icon that notes overrides, improved code assist and much more.

You can grab this latest download from a Eclipse PDT page off of the Eclipse site.

Richard Heyes has pointed out an interesting little app that Lucas Baltes created to visually show the timeline of PHP releases from now back.

The timeline stretches all the way from the current PHP 5 release (bye bye PHP 4) back to some of the initial releases Rasmus made as the "PHP Tools version 1.0" back in 1995. Each entry is timestamped with when it was released and some of the more recent ones have "tails" showing how long their life lasted.

Lucas also links to the museum on the PHP.net website where all of these versions can be downloaded.

The IBM developerWorks website has a new tutorial (login required) showing how to use the Eclipse PDT functionality to debug scripts your PHP development.

The PHP Development Tools (PDT) plug-in, when installed with Eclipse Europa, gives you that ability to quickly write and debug PHP scripts and pages. PDT supports two debugging tools: XDebug and the Zend Debugger. Learn how to configure PDT for debugging PHP scripts and discover which perspectives you use when taking closer looks at your scripts.

You'll need to have a machine with PHP, Eclipse, Apache and the PHP Development Tools already installed to follow along (as well as a trial version of the Zend Studio Web Debugger). They also include the methods for setting up XDebug as the debugger.

Mike Naberezny has start up a new resource to try to bridge some of the gap between PHP and Ruby and to help developers of either to get a bit more insight into the others' side - Rails for PHP Developers (based on the book published by the Pragmatic Programmers).

Rails for PHP Developers is a new site for PHP developers who are also interested in Rails and Ruby. PHP and Ruby are great complementary tools that are sometimes seen as adversarial, which is really unfortunate. We use both and we'll be writing regular articles to help cross-pollinate ideas and promote collaboration between the communities.

There's already some good content there - useful perlisms in ruby, a look at PHP object attributes and some information about the release of the site itself.

Kore Nordmann has posted a new article series (to the "Articles" section of his site) with six different pieces talking about different aspects of image creation with PHP:

• Image creation with PHP - Image Tools
• Image creation with PHP - Text rendering
• Image creation with PHP - Integrating bitmaps
• Image creation with PHP - Gradient rendering
• Image creation with PHP - A first shape
• Image creation with PHP - Formats & Libraries

Each of them can be read separately, but they're all part of a series and make more sense when read together.