PHP programming has been one of the fastest-growing computer science specializiations, and is now almost universally acknowledged as THE programming language for developing rich, interactive web sites -- especially dynamic websites powered by MySQL databases. The advent of internet-based distance education and online learning has opened many doors for programmers -- and, indeed, professionals in almost any field -- to continue their education without interrupting busy work schedules or family obligations. Online degree programs are available in programming and computer science, and professionals who need a brief introduction to a new topic can choose from certification programs or even specialty courses without signing up for a full-fledged online degree. There are actually many options for furthering your programming knowledge online. In addition to the usual forums and tutorial websites, developers may just find a gem of knowledge when browsing online libraries and online journal abstracts.