3v4l.org

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<?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 - 8.1.34, 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 ( [0] => 1 [1] => 2 [2] => 0 )
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100.77 ms | 406 KiB | 5 Q