PHP: server-side scripting
PHP’s principal focus is server-side scripting which is a web server technology in that involves the process of running a script directly on the web server to create dynamic HTML pages thus fulfilling the user’s request. PHP is originally intended to generate dynamic web pages and its server-side scripting function is the same with other server-side scripting languages that offer dynamic content from a web server to a client, such as ASP.NET system of Microsoft, Sun Microsystems’s JavaServer Pages and mod perl. PHP attracted development of various frameworks (code library made for helping in software development) as well that give building blocks and a design structure to promote rapid application development (RAD).