- Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
- array ( 0 => 29, 1 => 20, 2 => 21, 3 => 23, 4 => 11, )
<?php
$array1 = [29, 'a', 'x', 'c', 11];
$array2 = ['a' => 20, 'x' => 21, 'c' => 23];
var_export(
array_map(fn($v) => $array2[$v] ?? $v, $array1)
);