How to get rid of global variables in php?

Question

CMS

So, I wrote CMS for a long time, there are language files, a settings file and a bunch of plug-in files with functions.
In a huge amount of code, global variables are written for the same language or some function settings.
Is there an alternative to global, or are there other PHP features?

Answer 1

How to get rid of global variables in php?

do not use global variables.
alternative - inversion of control, dependency injection.

Answer 2

learn OOP, design patterns.