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Welcome to the world of PHP, one of the Web's most popular programming languages. According to Netcraft (www.netcraft.com), PHP was running on more than 20 million Web servers in July 2007 (http://www.php.net/usage.php). At the time of writing, it's the fourth most popular programming language in the world according to TIOBE (http://www.tiobe.com/index.php/content/paperinfo/tpci/), beaten only by Java, C, and C++. With the introduction of version 5.3, there's never been a better time to learn PHP.
In this chapter you: