<?php $arrays = [ [0 => 12, 5 => 10, 19 => 48], [0 => 14, 7 => 9, 12 => 11, 19 => 30], // ... more arrays ]; $result = []; foreach (array_replace(...$arrays) as $key => $_) { foreach ($arrays as $arr) { $result[$key][] = $arr[$key] ?? null; } } ksort($result); var_export($result);
You have javascript disabled. You will not be able to edit any code.