What Is PHP?
PHP is a language that has outgrown its name. It was originally conceived as a set of macros to help the developers to maintain personal home pages, and its name grew from its purpose. Since then, the PHP functions have been extended, taking it beyond a set of utilities to manage a full-fledged programming language, capable of huge database driven online environments.
As PHP has grown skills, as well as its popularity. According to NetCraft (http://www.netcraft.com), PHP runs on more than 1 million hosts in November 1999. In September 2001, the figure has already increased to more than 6 million machines, and by October 2003 PHP was reportedly installed on almost 14 million hosts. After d’SecuritySpace.com PHP is the most popular Apache module available, beating mod_ssl, Perl, and FrontPage.
PHP officially stands for PHP: Hypertext Preprocessor. It is a server-side scripting is written language, often in a HTML code context. Not analyzed in contrast with an ordinary HTML page, a PHP script directly to a customer with the server, but that is the engine of PHP. The HTML elements in the script are left alone, but PHP code is interpreted and executed. The PHP code in a script can query databases, create images, read and write files, talk to remote Server–the possibilities are endless. The output of PHP code is sent along with the HTML script and the result to the user.
PHP is also installed as a command line application, so that it is an excellent tool to create scripts on a server. Many systems administrators, PHP for the kind of automation that traditionally treated by Perl or shell scripts.