3v4l.org

run code in 300+ PHP versions simultaneously
<?php function count_to_ten() { yield 1; yield 3 => 2; $cmd = yield from [3, 4]; if ($cmd == 't') { echo "close"; return false; } yield from new ArrayIterator([5, 6]); yield from seven_eight(); return yield from nine_ten(); } function seven_eight() { yield 7; yield from eight(); } function eight() { yield 8; } function nine_ten() { yield 9; return 10; } $gen = count_to_ten(); foreach ($gen as $k => $num) { echo "$k -> $num \n"; echo $gen->send('t'); } var_dump( $gen->getReturn());
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
0 -> 1 20 -> 3 40 -> 5 60 -> 7 80 -> 9 int(10)

preferences:
150.44 ms | 403 KiB | 184 Q