how is this site is using php framework?

First of all, I went through many pages in that website and found none of the page are build using PHP. Perhaps you were referring to index.html

Another thing you might have missed to notice is although the page names are same i,e. index.html but the path is different, folders are different and so the pages are not the same. These are different pages with same name reside in different folder.
For Example:
Go to category d : http://o2tvseries.com/d[^]

Clicking Elementary will redirect you to

http://o2tvseries.com/Elementary/index.html

Clicking Empire will redirect you to

http://o2tvseries.com/Empire/index.html

So, they are different pages.

However, you can build your website using various methodology if you want it to happen that way. Check following links-

1. Multiple sections in the same page controlled by Javascript
http://stackoverflow.com/a/8211324/1006297[^]

2. Single Page Applications

The Future of Web Apps – Single Page Applications[^]
Create A Single Page Application Using Templates With Angularjs And Bootstrap[^]

There are many more...don't forget use Google Search.

Hope, it helps :)