PHP is a widely-used server side scripting language that is especially suited for Web development and creating complex web applications and can be embedded into HTML. PHP is open source and platform independent. MySQLi is the database used as backend to develop web applications in PHP. MySQLi it’s possible to create very big web applications. PHP & MySQLi are used to create content managements systems (cms), e-commerce applications, job portals, matrimonial sites, blogs, forums and custom web applications. Some of the websites developed using PHP are: FACEBOOK.COM, NAUKRI.COM, SHAADI.COM, WORDPRESS.COM.