PHP is the most popular web development language in the world, used to power over 20 million websites (Source: Netcraft - http://www.php.net/usage.php). With corporate adoption on the rise, and companies such as Oracle, IBM, Zend, and even Microsoft devoting increasing resources to the language, books such as PHP Objects, Patterns, and Practice, Second Edition will be in strong demand for the foreseeable future.
PHP Objects, Patterns, and Practice, Second Edition shows you how to meld the power of PHP with the sound enterprise development techniques embraced by professional programmers. Going well beyond the basics of object-oriented development, you'll learn about advanced topics such as working with static methods and properties, abstract classes, interfaces, design patterns, exception handling, and more. You'll also be exposed to key tools such as PEAR, CVS, Phing, and phpDocumentor.
See the following resources for more on enterprise adoption/interest in PHP: