What are the PHP helper class implementation options?

Question

PHP

My PHP application needs to use a few simple functions that will need to be called anywhere in the application. What is the best way to implement this in terms of compliance with OOP principles? Guys, please provide code examples or implementation examples.

Answer 1

It's hard to reason without having an idea about the functions.
in general, using helpers is not good practice from an OOP point of view. Therefore, if it is possible to avoid creating a helper, it is better to do so. Well, if there is no way to avoid it (for example, you have a helper that provides additional functions for processing arrays), then an ordinary class with a private constructor and static methods ....

Answer 2

static in parent class

Answer 3

"Static" class. Although there is no such concept in PHP, its meaning is in the implementation of static methods.
Implementation of the __callStatic method, which will determine the calls to simple functions, either redefine some of them, or add new ones (well, for example, stripos, depending on the encoding)