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@ 2017-07-04T15:01:07Z

<?php

function gen () {
    yield new \stdClass => "foobar";
}

foreach (gen() as $key => $value) {
    var_dump($key, $value);
}

Output
Performance
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var_dump: documentation ( source)

preferences:dark modelive preview

40.43 ms | 402 KiB | 5 Q