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<?php $result = []; function getNumsOdd(array $nums, array &$result) { foreach($nums as $key => $num) { if ($num % 2) { $result[$key] = $num; yield; } } } foreach(getNumsOdd([1,3,4,5,6], $result) as $x); var_dump($result);
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [0]=> int(1) [1]=> int(3) [3]=> int(5) }

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