How to Debug PHP Using Firefox with FirePHPSource: sixrevisions.com
This article shares an elegant, simple, and more maintainable way of debugging Ajax apps via the web browser (more specifically for the Mozilla Firefox browser).
50 Extremely Useful PHP Tools Source: Smashing Magazine
PHP is one of the most widely used open-source server-side scripting languages that exist today.

One of the biggest complaints that I hear from developers making their first foray into unit testing is that a lot of their code is untestable. Upon reviewing their code, I find that they're generally correct, but not because the code is particularly complicated.
Sweetcron - A Free & Open Source Lifestream Blog SoftwareSource: Google
Automatic Import
Uploaded a photo to flickr? Bookmarked a new site? In a few minutes it will show up on your blog!
Easily Customisable
Edit simple templates to change the way your Sweetcron Lifestream looks. Default Boxy But Good theme included!
Self Hosted
Microsoft Gives Apache Cash to Promote Open SourceSource: PC World
Microsoft on Friday expanded its support for the open-source community by giving money to the Apache Software Foundation, the first time it has given money to the long-standing open-source project.
MySql Lite AdministratorSource: Google
MySql Lite Administrator is a php web application that will help you insert and update stuff in your MySQL Database.
Twitter Said To Be Abandoning Ruby on RailsSource: TechCrunch
We're hearing this from multiple sources: After nearly two years of high profile scaling problems, Twitter is planning to abandon Ruby on Rails as their web framework and start from scratch with PHP or Java (another solution is to stick with the Ruby language and move away from …
Caching PHP pagesSource: New Earth Online
As your site traffic grows it takes longer and longer to generate a dynamic page from sending multiple queries to a database. One possible solution to limit queries is to cache the result of each query that is needed, or to have a complete full page cache for your site.

If you have ever wanted to add a forum to your community, but found the task daunting, or didn't even know where to start, this is the guide for you. I will show you what software to use, where to get it, and how to set it up.
Smart Image Resizer (PHP)Source:
A ridiculously easy-to-use PHP script for resizing images the smart way. Features intelligent sharpening, width:height ratio cropping, transparent GIF and PNG color filling, and caching for optimal performance.
Drupal 6.0 releasedSource:
After one year of development we are ready to release Drupal 6.0 to the world. Thanks to the tireless work of the Drupal community, over 1,600 issues have been resolved during the Drupal 6.0 release cycle.
Why PHP should never be taught, Part II.Source: zestyping.livejournal.com
An examination of the weird nature of equality and comparison in PHP, with examples. This is why we need to get rid of PHP, right away!
Online Calendars and Date PickersSource: Smashing Magazine
Calendars always come in handy. Whether you are planning a schedule for your next project, manage your appointments or simply want to keep track on events you are going to take part in — to get things done in time you need a clear, simple and user-friendly time line.
The PHP Toolbox: 20+ PHP ResourcesSource: Mashable!
With WordPress 2.3 launching this week, a bunch of themes and plugins needed updating. If you're not that familiar with PHP, this might present a slight problem. Not to worry, though - we've collected together 20+ tools for you to discover the secrets of PHP.
How to Create Screencasts in 5 Easy Steps!Source: kevin.vanzonneveld.net
This article covers how to install a video capturing tool, how to use it, how to convert the video to a flash (flv) file, and finally how to embed a flash player in your site just like Youtube. Create your own screencasts in 5 easy steps!