In a web application, how is the execution of javascript fundamentally different than php?

The difference present between JavaScript and PHP in term of the web application for execution are as follows:-

After the interpretation done by the servers, code of PHP is available for handling whereas after interpreting the output of the JavaScript , the code become available .PHP is mostly based on the programming of the client side whereas JavaScript is made for working on the side of the client or user.PHP persist the easy execution because it is easy to understand and debug as compared with JavaScript which is slightly difficult documentation.

Answer appreneurs; i believe this is correct plz check first/// good luck;