3v4l.org

run code in 300+ PHP versions simultaneously
<?php $edge_lengths = [420, 593.9696961967, 420]; uksort($edge_lengths, fn($k1, $k2) => $edge_lengths[$k2] <=> $edge_lengths[$k1] ?: $k2 <=> $k1); print_r(array_keys($edge_lengths));
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Array ( [0] => 1 [1] => 2 [2] => 0 )
preferences:
100.25 ms | 402 KiB | 62 Q