How to solve mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead?

This error or warning is occurred when we use the latest version of wamp or lamp servers. Normally we use the function mysql_connect() in order to establish the connection with the MySql Database server in PHP. We can call this function if the mysql extension is enabled by the PHP.

         The problem with the latest version of PHP and wamp , they forces us to use latest and improved version of mysql database connectivity function that is mysqli (MySql Improved).