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<?php $oldValues = array(1, null, null); $result = array_reduce($oldValues, function ($carry, $item) { var_dump($item); return (null !== $carry ? $carry : $item); }); var_dump($result); if (!$result) { $oldValues = array(); } var_dump($oldValues);
Output for git.master, git.master_jit, rfc.property-hooks
int(1) NULL NULL int(1) array(3) { [0]=> int(1) [1]=> NULL [2]=> NULL }

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