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<?php /** * @psalm-param class-string $class * @psalm-return \Generator<class-string> */ function classTypes(string $class): \Generator { yield $class; yield from class_parents($class); yield from class_implements($class); } interface I1 {} interface I2 {} abstract class A implements I1 {} final class B extends A implements I2 {} var_dump(iterator_to_array(classTypes(B::class), false));
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array(4) { [0]=> string(1) "B" [1]=> string(1) "A" [2]=> string(2) "I1" [3]=> string(2) "I2" }

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