3v4l.org

run code in 300+ PHP versions simultaneously
<?php $generator = static function (): iterable { yield 0 => 1; yield true => 2; yield 2 => 3; yield null => 4; }; var_export(iterator_to_array($generator()));
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
array ( 0 => 1, 1 => 2, 2 => 3, '' => 4, )
preferences:
53.88 ms | 406 KiB | 5 Q