PHP is a recursive acronym for “PHP: Hypertext Preprocessor”. It is a server side scripting language which is embedded in HTML. With the help of this many e-commerce sites are built and it manages dynamic content, databases, session tracking etc. It can be integrated with number of popular databases, comprising MySQL, PostgreSQL, Oracle, Sybase, Informix, and Microsoft SQL Server. Some of the important functions, classes and features are given below. Every...