3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = array('0' => 'John', '1' => 'George', '2' => 'James', '3' => 'Harry'); $arr2 = array('0' => '12', '1' => '8', '2' => '34', '3' => '23'); arsort($arr2); var_dump(array_replace($arr2,$arr1));
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
array(4) { [2]=> string(5) "James" [3]=> string(5) "Harry" [0]=> string(4) "John" [1]=> string(6) "George" }
preferences:
188.68 ms | 404 KiB | 302 Q