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()); $g->send(100); while($g->valid()) { $val = $g->next(); var_dump($val); }
Output for 7.0.0 - 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
int(1) NULL NULL NULL NULL NULL
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Parse error: syntax error, unexpected '1' (T_LNUMBER) in /in/KJCcZ on line 4
Process exited with code 255.
preferences:
258.89 ms | 402 KiB | 376 Q