3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array1 = [0 => 'hello']; $array2 = [0 => 'hello']; print_r(array_merge($array1, $array2));
Output for 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Array ( [0] => hello [1] => hello )
preferences:
43.07 ms | 701 KiB | 4 Q