3v4l.org

run code in 300+ PHP versions simultaneously
<?php function gen($induced){ yield $induced ? "induced" : "not induced"; if(!$induced) yield from gen(true); } $generator = gen(false); $messages = []; foreach($generator as $value) $messages[] = $value; var_dump($messages);
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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array(2) { [0]=> string(11) "not induced" [1]=> string(7) "induced" }
Output for 5.6.0 - 5.6.40
Parse error: syntax error, unexpected 'gen' (T_STRING) in /in/AXu2B on line 5
Process exited with code 255.

preferences:
105.42 ms | 1945 KiB | 4 Q