3v4l.org

run code in 300+ PHP versions simultaneously
<?php $nums = range(0,9); print_r(array_map(fn($x) => $x*$x,$nums));
Output for 8.0.1 - 8.0.30, 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] => 0 [1] => 1 [2] => 4 [3] => 9 [4] => 16 [5] => 25 [6] => 36 [7] => 49 [8] => 64 [9] => 81 )
preferences:
75.62 ms | 1125 KiB | 4 Q