PHP：一个URL中有两个GET请求？

Can I use two GET requests in one url.

http://localhost/ecommstore/category_grid.php?pn=1.

Here pn=1 is for pagination. I want here another GET request for sub_category.

Can you please help me that how to do that and separate these two get requests correctly?

Yes by using & between two parameters. You can write your url like this

http://localhost/ecommstore/category_grid.php?pn=1&sub_category=sub_categoryName

Here before your first parameter you should write ? and after first parameter you should separate them by &. It works for me. Hope it helps you