3v4l.org

run code in 300+ PHP versions simultaneously
<?php /** @return Generator */ function example() { for ($i = 0; $i < 5; $i += 1) { $answer = (yield $i * 2); echo "received: $answer\n"; } } $gen = example(); foreach ($gen as $x) { echo "sending $x\n"; $gen->send($x); }
Output for 5.6.38 - 5.6.40, 7.0.33, 7.1.0 - 7.1.33, 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 - 8.1.29, 8.2.0 - 8.2.21, 8.3.0 - 8.3.9
sending 0 received: 0 received: sending 4 received: 4 received: sending 8 received: 8
preferences:
185.74 ms | 405 KiB | 221 Q