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<?php function run(int $max) { for ($i=1; $i<5; $i++) { unset($y, $z); yield ($y = $i*3) => $y; yield $z => ($z = $i*3); } } foreach(run(10) as $key => $value) { echo $key, ' => ', $value, PHP_EOL; }
Output for git.master_jit, git.master, rfc.property-hooks
3 => 3 3 => 3 6 => 6 6 => 6 9 => 9 9 => 9 12 => 12 12 => 12

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