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<?php class Foo {} class Bar extends Foo {} var_dump(is_subclass_of(Bar::class, Foo::class)); var_dump(is_a(Foo::class, Foo::class)); var_dump(is_a(Foo::class, Bar::class));
Output for git.master_jit, git.master, rfc.property-hooks
bool(true) bool(false) bool(false)

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