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<?php $result = []; function getNumsOdd(array $nums, array &$result) { foreach($nums as $num) { yield get2Nums($num, $result); //foreach(get2Nums($num, $result) as $x){yield;}; } } function get2Nums(array $nums, array &$result) { foreach($nums as $num) { if ($num % 2) { $result[] = $num; yield; } } } foreach(getNumsOdd([[1,3,4,5,6],[7,8,9,10]], $result) as $x); print_r($result);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( )

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