What is the difference between java script and php in developing web site m?I mean when i use java script and when use php?

Question

When to use php and javascript ?

Answer 1

Many difference between them

Answer 2

JavaScript for logic and it's a scripting language.
PHP for database and if you want to add a password to support SQL as database and it's a Server side programming language.

Answer 3

JavaScript to logic the behavior in your website and PHP to support the database and passwords.