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<?php abstract class Foo { public function Bar() {} } $ref = new ReflectionClass(Foo::class); var_dump($ref->getModifiers(),Reflection::getModifierNames($ref->getModifiers()));
Output for 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
int(64) array(1) { [0]=> string(8) "abstract" }
Output for 7.1.26 - 7.1.33, 7.2.17 - 7.2.33, 7.3.0 - 7.3.33
int(32) array(1) { [0]=> string(8) "abstract" }

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