3v4l.org

run code in 300+ PHP versions simultaneously
<?php $meta = [1, 2, 3]; function test($a, &$b, $c) { $b = 'xx'; } test(...$meta); var_dump($meta);
Output for 5.6.0 - 5.6.40, 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 - 8.1.27, 8.2.0 - 8.2.16, 8.3.0 - 8.3.3
array(3) { [0]=> int(1) [1]=> string(2) "xx" [2]=> int(3) }

preferences:
177.92 ms | 404 KiB | 285 Q