The term PHP, or Hypertext Processor (originally known as Personal Home Page) is a broadly used, all purpose scripting language which was originally developed for website designs which produces dynamic web pages. PHP is specifically designed to suit the web development of the server-side wherein PHP operates on web servers. A PHP code inside a requested data or file is run by PHP runtime, which usually produces contents for dynamic web pages.
Moreover, PHP is also useful in command-line scripting and applications such as the client-side GUI.The PHP can be designed on almost any web server, various operating systems and other platforms. PHP can also be used with a number of relational database management systems. The PHP can be availed without any costs, and the group who developed the PHP can provide the programmers all the source code for them to be able to build, extend or even customize the program.The primary role of the PHP is a filter, or the one which takes inputs from a certain file of stream which contains texts or PHP instructions. It then brings out a stream of information (which commonly becomes the HTML). PHP, which was originally developed to produce a dynamic web page, is now focused on server-side scripting. PHP is also similar to other languages in terms of server-side scripting which provides dynamic contents to a certain client from a particular web server.
An example of this includes mod perl, JavaServer Pages from Sun Microsystems, and the Active Server Pages from Microsoft.