Answer 1

Some uses of PHP are :
•used for creating dynamic website
•can interact with any back-end database server
•user can be restricted to access a specific web page
•it can handle forms, i.e. gather data from files, save data to a file
•you can add, delete, modify elements within your database through PHP. Accessing cookies variables and set cookies is also possible
•It supports many database such as MySQL, PostgreSQL, Oracle, etc.
•It is perfectly suited for Web development and it can be embedded directly into the HTML code.