3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['0' => 1, '1' => 2, '2' => 3]; $b = ['0' => 4, '1' => 5, '2' => 6]; $newArray = array_map('combine',array_map(null, $a, $b)); function combine($n){ return array_combine(array('a','b'),$n); } print_r($newArray);
Output for 7.1.25 - 7.1.30, 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 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.14, 8.4.1
Array ( [0] => Array ( [a] => 1 [b] => 4 ) [1] => Array ( [a] => 2 [b] => 5 ) [2] => Array ( [a] => 3 [b] => 6 ) )
preferences:
81.94 ms | 408 KiB | 5 Q