How to change the port or VirtualHost for PHP

Why need to change port or VirtualHost

After Completion of Installation -> launch Wamp server -> open Browser
Type -> http://localhost/phpmyadmin/         [by default port = :80]
      or    http://localhost:80/phpmyadmin/

So need to change port number of wamp server 80 to 81/82...etc, in this example change into 81

Goto ->

•  Taskbar -> Click on Wamp logo -> Apache -> httpd.conf   Or
•  C:\wamp\bin\apache\Apache2.4.4\conf\httpd.conf

Find in  httpd.conf

• Listen 80
• change into Listen 81