What does Composer do?

I don’t have the php extension for redis. Can Composer help me install it?

Reply content:

It is a tool that is said to solve PHP package dependency problems.

is a tool that introduces a bunch of troubles in order to solve one trouble. What the poster is talking about is what the pecl package management does, and composer is actually a solution that can standardize the PHP community code, but it introduces complicated problems. His appearance is undoubtedly to make all PHPers work in one place. It can make the development community more ecological. Simply put, it can solve a chaotic situation. It’s not easy if you are using Linux
pecl install redis nrk/predis · GitHub