3v4l.org

run code in 300+ PHP versions simultaneously
<?php function gen1() { $x = yield 1; yield 2; yield $x; } function gen2() { yield from gen1(); yield from gen1(); } function gen3() { yield from gen2(); } $g = gen3(); var_dump($g->current()); $g->send(100); foreach($g as $val) { var_dump($val); }
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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
int(1) Fatal error: Uncaught Exception: Cannot rewind a generator that was already run in /in/pH7l0:21 Stack trace: #0 {main} thrown in /in/pH7l0 on line 21
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Parse error: syntax error, unexpected '1' (T_LNUMBER) in /in/pH7l0 on line 4
Process exited with code 255.
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183.05 ms | 402 KiB | 244 Q