Need suggestion regarding data scrape in php

I need ideas of how data could be extracted from website. For instance, I have this website.

www.czone.com.pk

It is based on pc components. If I search GTX 980 in website's search bar it gives me some products now I want to extract those products and show it is my website.

For instance, I have website www.abc.com that is based on product comparison concept. If I search GTX 980 in my abc.com search bar it should extract the data from www.czone.com.pk and not just one site but also from other 3 sites which I want to use.

How this could be done and does it need database? There are no APIs of those websites and also if I manually store all the products in the database would take a huge time.