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<?php class Grandparent{ protected static $data = array( 'default', ); protected static function filter(){ var_dump(self::$data); } } class ParentClass extends Grandparent{ protected static $data = array( 'one', 'two', ); } class Child extends ParentClass{ } child::filter();

preferences:
31.9 ms | 402 KiB | 5 Q