John Coggeshall, «PHP 5 Unleashed»

The PHP language is in use today at over 12 million Internet domains worldwide, and continues to grow in popularity at an astonishing rate of almost 400,000 domains a month. The latest version, PHP 5, is in beta and is expected to reach final form by Q1 2004. It is a significant new release that speeds up performance, improves XML and streams support, and includes many new functions. PHP 5 increases the appeal of PHP to serious programmers who have not used it before, and it requires current PHP users to re-learn many things as to how they have approached PHP in the past.