3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = [1, 2, -2]; usort($arr, fn ($a, $b) => $a - $b); print_r($arr); $arr = [0.1, 0.2, -0.2]; usort($arr, fn ($a, $b) => $a - $b); print_r($arr);

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43.66 ms | 1126 KiB | 5 Q