3v4l.org

run code in 500+ PHP versions simultaneously
<?php $arr1 = ['a' => '1','b' => 2, 'z' => 'foo']; $arr2 = ['h' => 'c','j' => '3']; $count = count($arr1); $result = []; for ($i = 0; $i < $count; ++$i) { $result += array_slice($arr1, $i, 1) + array_slice($arr2, $i, 1); } $result += array_slice($arr1, $count) + array_slice($arr2, $count); var_export($result);
Output for 7.4.0 - 7.4.33, 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 - 8.4.21, 8.5.0 - 8.5.7
array ( 'a' => '1', 'h' => 'c', 'b' => 2, 'j' => '3', 'z' => 'foo', )
preferences:
104.04 ms | 1264 KiB | 4 Q