George Maicovschi

You could make the case that, over the past 15 years, the three technologies that have contributed most to the Web’s explosive growth are HTML, HTTP, and XML. You might expand upon this triumvirate, pointing perhaps to CSS, JavaScript, and similar technologies. But the “big three” remain unchallenged at the top of the list. PHP has also made a splash in the Web-development world. PHP powers Web sites from small home pages to the likes of Yahoo!, largely because of its ease of development and Web-centered model. But using PHP to work with the big three — especially with XML — can sometimes be tricky. In this article, learn about QueryPath, a PHP library designed with two goals in mind:

• Simplicity, to make it easy to work with HTML, XML, and HTTP
• Robustness, to provide a rich site of tools for working with these technologies