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Are you wondering what all the talk is about?
Wanting to learn to use PHP?
From what you hear being said about it you could be forgiven for thinking it to
be the panacea for all that ails the Web development world. There are those who
would argue that you would be right in thinking that. While I may not quite go
to that extreme, I will join those who will not argue against the notion! It is
indeed a very useful weapon in the Web Designer's arsenal. So what exactly is
it? Where can you get it? How much does it cost? How do you use it? Whoa there,
Nelly! That's what this little series is all about. This is an introduction to
PHP intended to give you a foundation for its use and to guide to resources you
can use to get deeper into the PHP world. PHP is gaining ground quite rapidly
and is being accepted and used in some very demanding and traditionally cautious
environments. There are good reasons, so you are encouraged to read on!
PHP started its life in 1994 in the mind and hands of one Mr. Rasmus Lerdorf. Recognizing the virtue of his creation a number of very talented programmers have lent their skills to its development, and have included a number of complete rewrites along the way. The latest release, PHP4 comes from a company called Zend. PHP is an Open Source project, meaning that its source code is available for you to study, use and modify, should you so wish. Its name originally stood for Personal Home Page, but it has since adopted "PHP Hypertext Preprocessor" (GNU, the open source project is fond of recursive names like its own "GNU's Not Unix".) PHP is free. It can be downloaded from www.PHP.net or, for PHP4, www.Zend.com.
Before you can take advantage of PHP extensive capabilities, it must be installed and available on the server hosting your website. Here's some good news! PHP is platform friendly. It runs on Windows, Linux and many flavors of UNIX, so the chances are it can be installed on your server if it's not already there. Because of its popularity most hosting companies these days offer support for PHP. If you're not sure about yours, call and ask them. If they don't support it, ask them why not, then choose another host!
Other server side languages, competitors if you like, include PERL, ASP (Active Server Pages) (&ASP.Net), JSP (Java Server Pages), Alaire's Cold Fusion and others. PHP has some advantages over its competitors. It's free - a tough price to beat! It's very efficient, making it capable of handling millions of daily hits on one inexpensive server (check out the benchmarks on http://www.Zend.com ) It's portable, meaning that it's easily moved from one platform to another (it's not identical on Windows and Unix/Linux, but it's very close - there would be only a few things to be changed.) It integrates with a variety of Database Management Systems (DBMS) including MySQL, which is also free! The list of DBMS is quite extensive and includes support for any systems that provides an Open Database Connectivity Standard (ODBC) driver, as most do.
Another big advantage of PHP is that it's easy to learn. That's what we're all about here. As previously mentioned, this introductory piece is to lead you into a new tutorial series that will provide a foundation for you to begin using PHP. We will be covering the basics of the language and providing some usable examples. In addition, we will be guiding you to some resources that you can use to increase the depth of your understanding of PHP and to expand the range of things you can accomplish with it. Gone are the days of the old static web page (well, almost!) Welcome to the dynamic world of interactivity and database connectivity on the Web!
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