In actual development projects, wamp's php extension, php settings and apache module on the server

I currently have a server and would like to ask,
Question 1: In actual development, which php extensions and apache modules must be enabled? What are their functions?
For example: what can be cached, enable gzip, and speed up user access.

Question 2: If too many extensions are enabled, will it have a big impact on performance

Question 3: Are there any books that can introduce this aspect in detail

php extension

apache module

php settings

Reply content:

I currently have a server and would like to ask,
Question 1: In actual development, which php extensions and apache modules must be enabled? What are their functions?
For example: what can be cached, enable gzip, and speed up user access.

Question 2: If too many extensions are enabled, will it have a big impact on performance

Question 3: Are there any books that can introduce this aspect in detail

php extension

apache module

php settings