Overview of Most Popular Web Programming Language: PHP

Web Development

PHP is a server-side scripting language designed especially for web development, but it can also be used as a general-purpose programming language. Instead of a bunch of commands to output HTML (as seen in C or Perl), PHP pages contain HTML with an embedded code that does “something.” The PHP code is enclosed in special start and end processing instructions that will allow you to jump into and out of PHP mode. What makes PHP different from something like JavaScript is that the code is executed on the server, generating an HTML that is then sent to the client. The client would receive the results of running that script, but wouldn’t know what the underlying code was. You can even configure your web server to process all of your HTML files with PHP. The some of the best things about using PHP are that it is extremely simple for a newcomer, but has many advanced features for the professional programmer. PHP is fast, flexible and pragmatic. It drives everything from your blog, to the most popular websites in the world. PHP once stood for Personal Home Page, but now it stands for the recursive backronym PHP: Hypertext Preprocessor. PHP-code can be embedded into HTML code, or it can be used in many combinations within various Web template systems, and web frameworks. A PHP interpreter, implemented as a module in the web server or as an executable Common Gateway Interface (CGI), usually processes PHP code. The server will integrate the culmination of the interpreted and executed PHP code, which can be any type of data, including images, with a generated web page. PHP code may also be executed with a command-line interface (CLI) and can also be used to put into action standalone graphical applications.

The Zend Engine powers the standard PHP interpreter, and is a free software released under the PHP License. PHP has been widely ported and can be installed on most web servers on almost every OS, and platform, free of charge.
The PHP language evolved without a written formal specifications or standards until 2014, leaving the canonical PHP interpreter as a de facto standard. Work has been ongoing to create a formal PHP specification.

On 07 Jan 2016 the PHP development team has recently announced the immediate availability of PHP 5.6.17. This is a security release. Many security bugs were fixed in this release. PHP 5.6 or later users are encouraged to upgrade to this version.

About the Author : William Sparkman

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