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run code in 200+ php & hhvm versions
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<?php class Foo implements IteratorAggregate { public function getIterator() { yield; } } var_dump((new ReflectionClass('Foo'))->isIterateable());
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.1
bool(true)