3v4l.org

run code in 300+ PHP versions simultaneously
<?php $nb = 100; $data = range(1, 1000); $callback = function ($value, $key) { return [$key => $value]; }; for ($ii = $nb; $ii--; ) { $values = array_map($callback, $data, array_keys($data)); $result = array_replace(...$values); }
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4

preferences:
194.05 ms | 403 KiB | 157 Q