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<?php class Foo { const BAR = 'foo_bar'; static $baz = 'foo_baz'; function getBaz() { return static::$baz; } } class Bar extends Foo { } var_dump(Bar::BAR); var_dump(Bar::$baz); var_dump((new Bar())->getBaz());

preferences:
44.84 ms | 402 KiB | 5 Q