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<?php $x = new ReflectionClass(SimpleXmlElement::class); var_dump($x->getInterfaces());
Output for git.master, git.master_jit, rfc.property-hooks
array(5) { ["Stringable"]=> object(ReflectionClass)#2 (1) { ["name"]=> string(10) "Stringable" } ["Countable"]=> object(ReflectionClass)#3 (1) { ["name"]=> string(9) "Countable" } ["RecursiveIterator"]=> object(ReflectionClass)#4 (1) { ["name"]=> string(17) "RecursiveIterator" } ["Traversable"]=> object(ReflectionClass)#5 (1) { ["name"]=> string(11) "Traversable" } ["Iterator"]=> object(ReflectionClass)#6 (1) { ["name"]=> string(8) "Iterator" } }

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