Class Constant Finalization

In my book, ideally, there would be no class constant inheritance as inherited constants don't really make sense when they are known at compile time. People often use this feature in order to get things like this to work: class LibLevelClass { const FOO = "default"; public function doSomething() { echo "the value of FOO is: " . static::FOO; } } class ExtensionClass { const FOO = "custom"; } But this approach is error prone due to untyped nature of constants (one could override the constant with an array value). In the end this inheritance is always unnecessary.

Hi!

That doesn't make much sense to me. Constant belongs to a class. I don't see much utility in "no class extending from this one can define constant with the same name". final makes sense when the alternative is override, and you want to exclude it. But since there's no override here, no point to exclude anything.