3v4l.org

run code in 500+ PHP versions simultaneously
<?php $ids = array(4, 13, 6, 8, 10); $names = array('alice', 'bob', 'charles', 'david', 'elizabeth'); $special_name = 2; $special_id = 13; $mapped = array_combine($ids, $names); $mapped[$special_id] = $names[$special_name]; var_export($mapped);
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 ( 4 => 'alice', 13 => 'charles', 6 => 'charles', 8 => 'david', 10 => 'elizabeth', )
preferences:
68.79 ms | 1117 KiB | 4 Q