Git when in composer project?

Question

git

Do I understand correctly that when there is a composer in the project, then under git control are:
composer.json
composer.lock We deduce the composer.phar file
from under git:
vendor folder ?

Answer 1

All right.
https://www.gitignore.io/ to help you.

Answer 2

composer.phar do not copy to the project folder, put it in the system.
The rest is correct.