3v4l.org

run code in 500+ PHP versions simultaneously
<?php $arr = ["ia", "ai", "go", "og", "og", "cr", "og", "rc"]; $new = array_reduce($arr, function ($acc, $item) { if (!in_array($item, $acc) && !in_array(strrev($item), $acc)) { array_push($acc, $item); } return $acc; }, []); print_r($new); //Array ( [0] => ia [1] => go [2] => cr )
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.4, 8.3.6 - 8.3.33, 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
Array ( [0] => ia [1] => go [2] => cr )
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Array ( [0] => ia [1] => go [2] => cr )
preferences:
128.79 ms | 1430 KiB | 4 Q