3v4l.org

run code in 300+ PHP versions simultaneously
<?php $map = [ 'sys_a_1' => 'sys_b_1', 'sys_a_2' => 'sys_b_2', ]; $data = [ 'sys_a_1' => 'data_1', 'sys_a_2' => 'data_2', ]; $result = array_combine($map,$data); print_r($result);
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
Array ( [sys_b_1] => data_1 [sys_b_2] => data_2 )

preferences:
140.19 ms | 407 KiB | 5 Q