Special Offer: Web Programming Certificate Series -- This six-course series from the O'Reilly Learning Lab teaches you the skills needed for web programming, web administration, and website development. You'll learn HTML, JavaScript, XML, SQL, Perl, and Unix. Upon completion of the series, students receive a Certificate of Professional Development from the University of Illinois Office of Continuing Education. Sign up today and save 40% on all Web Programming Certificate courses. Offer extended until February 28.

Programming eBay Web Services with PHP 5 and Services_Ebay -- In this ONLamp article, Adam Trachtenberg shows how to use the new features of PHP 5 for writing web services clients. Adam is the author of two PHP books, including Upgrading to PHP 5.

Book Review: Upgrading to PHP 5 -- In this WebDevReviews.com review, Chrispian Burks writes, "If you’re looking for a guide to help you get up to speed on PHP 5 and you already know PHP 4, then this is the book you’ll want. Adam sticks to the O’Reilly formula and his knowledge of PHP is second to none." The book that "won't let you down" is Upgrading to PHP 5.

Creating Learning PHP 5 -- Developers often write open source software in public, but what about developers who write about open source software? Do they build tools? How do your favorite books come about? David Sklar explains how he wrote Learning PHP 5.

PHP Form Handling -- If your PHP script produces dynamic web pages (and it probably does), and your PHP script deals with user input (it probably does), then you need to work with HTML forms. Here are some tips for simplifying, securing, and organizing your form-handling PHP code, from David Sklar, author of Learning PHP 5.

Web Programming Certificate Series -- With the help of Useractive's Learning Sandbox technology, you can learn how to develop web applications while gaining valuable hands-on experience. This online course series from the O'Reilly Learning Lab covers HTML, JavaScript, XML, SQL, Perl, and Unix. Enroll in all six courses and save 40%. Offer expires August 23.

ActionScript for Non-Coders -- Sham Bhangal uses real-world examples to show how the Flash authoring environment allows an ActionScript coder to work and share ideas with designers who have no ActionScript experience, while at the same time allowing designers to make full use of scripting. Sham is the author of O'Reilly's recently released Flash Hacks.

PHP Debugging Basics -- If you've got problems with your PHP programs, this article by David Sklar offers techniques to help you find and fix them: locate basic syntax errors, check the values of variables as your program is running, and make the PHP interpreter report the errors that interest you. David is the author of Learning PHP 5.

Why PHP 5 Rocks! -- Adam Trachtenberg provides a quick tour around PHP 5, highlighting seven of his favorite new features, all of which will allow your PHP 5 code to be more concise, more elegant, and more flexible than ever. Adam is the author of the upcoming Upgrading to PHP 5.

Client-Side Scripting Certificate Series -- Learn the core technical skills necessary, from basic to complex, for a complete understanding of web scripting and development. The three-course series includes: Learn HTML; Learn JavaScript; and Advanced Web Scripting. Enroll in all three courses at 30% off, and get a free bonus enrollment in the 'Learn PHP' course. Offer ends July 23.

Installing Python from Source Code -- Have you been wanting to try Python? Chapter 2 of Python in a Nutshell includes a step-by-step guide that shows you where to get the code, and covers installation, configuration, building, testing, and more. Get a free trial to read this and four other O'Reilly books on Safari.

Tapping RSS with Shell Scripts -- Learn how to write a shell script that watches the news from Slashdot.org. After applying the code in this article by Dave Taylor all you'll have to do is launch the Terminal to see the latest Slash headlines. Dave is a coauthor of Learning Unix for Mac OS X Panther.

An Introduction to the Twisted Networking Framework -- Network programming is difficult, and not just because bandwidth and latency are hard to manage. Itamar Shtull-Trauring introduces Python's Twisted, an open source framework designed to ease development of networked applications. Itamar will be presenting a session on Twisted February 9th at O'Reilly's Emerging Technology Conference.

PHP Web Services Without SOAP -- Adam Trachtenberg demonstrates how to access Amazon Web Services (AWS) with PHP and REST; no special tools needed. Adam is a coauthor of PHP Cookbook.

PHP Survey -- Are you currently using PHP? What do you use it for? What database do you use most frequently with PHP? Please take a few minutes to tell us in our PHP Survey. Your answers will help us shape both our online and book publishing programs. You'll find our current PHP books at scripting.oreilly.com.

Cooking with ActionScript, Part 2 -- Learn how to pause and resume a sound, save a local shared object, and search XML, in these sample recipes from ActionScript Cookbook.

Cooking with ActionScript -- Learn how to format currency amounts, create timers and clocks, and use a unique depth when creating a movie clip, in these sample recipes from O'Reilly's ActionScript Cookbook.

Cooking with JavaScript & DHTML -- Find out what you need to do to let users of IE for Windows type in their select element choices, in this bonus recipe that you won't find in Danny Goodman's JavaScript & DHTML Cookbook.

OOP in Flash and ActionScript, Part 2 -- Learning to create your own custom classes in ActionScript can really propel your efficiency to another level. In this article, Joey Lott offers the whys and hows of basic OOP with ActionScript. Joey is the author of ActionScript Cookbook.

Introduction to OOP in Flash and ActionScript -- One of the greatest stumbling blocks in learning object-oriented programming is the inherent abstractness. Enter the simplicity of Flash and ActionScript. In this first of two articles, Joey Lott offers an introduction to basic OOP with ActionScript. Joey is the author of ActionScript Cookbook.

Super-Efficient Image Rollovers -- Danny Goodman shows you how to reduce the number of individual image files downloaded to a browser to accomplish three-state image rollovers. Danny is the author of JavaScript & DHTML Cookbook.

Cooking with JavaScript & DHTML -- Learn how to read effective style sheet property values in our latest sample recipe from JavaScript & DHTML Cookbook.

Cooking with JavaScript & DHTML, Part 4 -- Learn a quick and simple solution to importing browser- or operating system-specific style sheets, in this sample recipe from Chapter 11, "Managing Style Sheets," in Danny Goodman's JavaScript & DHTML Cookbook.

Cooking with JavaScript & DHTML, Part 2 -- Learn how to simulate a hash table for fast array lookup--essential for iterating through a collection when you need to use every entry, or for diving into a specific record without any looping--in this latest sample recipe excerpted from JavaScript & DHTML Cookbook.

Cooking with JavaScript & DHTML -- Learn how to implement auto-tabbing for fixed-length text boxes in this sample recipe from Danny Goodman's JavaScript & DHTML Cookbook.

Perl: Where Do I Start? Are you new to Perl? Confused about which book to start with, or what to read next? Get oriented with our Perl Where Do I Start? page. And find a complete list of O'Reilly's Perl titles at perl.oreilly.com.

Dynamic HTML Tables: Improving Performance -- Danny Goodman investigates the many ways to repopulate a table as he seeks out the most efficient techniques for maximizing table-modification code performance. Some of his findings may surprise you. Danny is the author of JavaScript & DHTML Cookbook.

Rasmus Lerdorf at PHPCon East -- Join O'Reilly author and PHP inventor Rasmus Lerdorf at PHPCon for his opening keynote and session on PHP Tips and Tricks. Also, don't miss PHP Cookbook authors Adam Trachtenberg and David Sklar for their session, "Taming Large-Scale PHP Projects." For PHP resources, articles, and more, check out ONLamp.com's PHP DevCenter.

Get Your PHP Recipe of the Day -- Are you a programmer who's looking for useful PHP code? Look no further, thanks to our daily PHP recipe. Today's recipe is on "Changing File Permissions or Ownership," excerpted from O'Reilly's PHP Cookbook.

Internationalization and Localization with PHP -- Making your Web sites multilingual doesn't have to mean driving yourself crazy. Learn how to deliver translated text and images simply and easily, from Adam Trachtenberg, the coauthor of PHP Cookbook.

Trip Mapping with PHP -- Do PHP and cartography go together? David Sklar demonstrates how to plot your trips with PHP and census data. David is a coauthor of the upcoming PHP Cookbook.

Beginning Python for Bioinformatics--Patrick O'Brien introduces Python as a language well suited to the task of processing biological information. "Practical Tools for Innovation" is the theme of this year's Bioinformatics Technology Conference.