what is meant by this "php works on various platforms like Linux and Windows"?

Question

what is meant by " platforms " here and why php depends on platforms?

Answer 1

Platforms are OSes here. And while php code does not depend on the platform, the php interpreter does, and the statement "php works on various platforms like Linux and Windows" is not obvious.

Answer 2

well, one more thing must be telling. Php is a web server service, So usually when you finish code your php application, you will upload it to any web server in the internet to people can use it.
So,there are many (thousands ) of web servers over the world , free or payable. Running on different operation systems, or more types of computers. That is it.