Accessing PHP Class Constants

Question

The PHP manual says

Like static members, constant values can not be accessed from an instance of the object.

which explains wh

Answer 1

If you are within the class, you can access the constant like this:

self::MY_CONSTANT;

For example:

class MyClass {
    const MY_CONSTANT = 'constant value';

    public function showConstant() {
        echo self::MY_CONSTANT;
    }
}

http://php.net/manual/en/language.oop5.constants.php