Child class can not override final method of the parent class
class A {
    final public static function who() {
        echo __CLASS__;
    }
}

class B extends A {
    public static function who() {
        echo __CLASS__;
    }
}

B::who();
Fatal error:
Cannot override final method A::who()
by Valeri Tandilashvili
4 years ago
PHP
OOP
PHP official doc
1
Pro tip: use ```triple backticks around text``` to write in code fences