To boost its siteWeb What language do you advice do you, Javascrip, php?

Question

Web

Answer 1

It is totally different
PHP is a server language and javascript is a webpage language... it depends of what you want to do

Answer 2

JavaScript has one very big advantage. You can use it not only on the server side but also on the client side.
https://en.m.wikipedia.org/wiki/List_of_server-side_JavaScript_implementations