3v4l.org

run code in 300+ PHP versions simultaneously
<?php function generate(): \Generator { echo yield; } $gen = generate(); var_dump($gen->send(null)); //var_dump($gen->next()); function aVoidFunction(): void { return; } var_dump(aVoidFunction());
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
NULL NULL

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136.69 ms | 407 KiB | 5 Q