Why doesn't PHP permit private const?

Question

I have a class that benefits from the use of constants in its internal implementation, but I would like to limit visibility of these constants. Why doesn\'t PHP permit priva

Answer 1

Use private static properties.

In that case you will have the same variable throughout all objects and if you want to extend its scope to nested, you can expose a getter method to get its value and restrict variables settings.

Answer 2

As of PHP 7.1, there are real private constants.

private const PRIVATE_CONST = 0;

See the Class Constant Visibility RFC for more information.