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<?php abstract class A { const __default = null; public function __construct() { $class = get_class($this); $r = new ReflectionClass($class); $constants = $r->getConstants(); var_dump($constants); } } class B extends A { const __default = self::A; const A = 'a'; const B = 'b'; } class C extends B { const __default = self::C; const A = 'A'; const C = 'c'; } $enum = new C();
Output for git.master, git.master_jit, rfc.property-hooks
array(4) { ["__default"]=> string(1) "c" ["A"]=> string(1) "A" ["C"]=> string(1) "c" ["B"]=> string(1) "b" }

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