3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = [7, 5, 6, 9]; $b = [1, 3, 2, 4]; $result = array_map(function($a1,$b1){ return $a1.'-'.$b1; },$a,$b); print_r($result);

preferences:
34.52 ms | 405 KiB | 5 Q