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--TEST--
Return type covariance works with generators
--FILE--
<?php
interface Collection extends IteratorAggregate {
function getIterator(): Iterator;
}
class SomeCollection implements Collection {
function getIterator(): Generator {
foreach ($this->data as $key => $value) {
yield $key => $value;
}
}
}
$some = new SomeCollection();
var_dump($some->getIterator());
--EXPECTF--
Fatal error: Declaration of SomeCollection::getIterator(): Generator must be compatible with Collection::getIterator(): Iterator in %sgenerators003.php on line 6
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