How does object-oriented programming (OOP) principles relate to defining and handling constants in PHP?

Object-oriented programming principles can be used to define and handle constants in PHP by creating a class specifically for storing constants. This class can be used to group related constants together, making it easier to organize and manage them. Additionally, using class constants ensures that the values cannot be changed once they are set, providing a level of data integrity and preventing accidental modifications.

class Constants {
    const MAX_LOGIN_ATTEMPTS = 3;
    const DEFAULT_LANGUAGE = 'en';
}

// Accessing the constants
echo Constants::MAX_LOGIN_ATTEMPTS; // Outputs 3
echo Constants::DEFAULT_LANGUAGE; // Outputs 'en'