3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a1 = ['a' => 0, 'c' => 1, 'e' => 2]; $a2 = ['b' => 3, 'd' => 4, 'f' => 5]; $result = []; for ($i = 0, $count = count($a1); $i < $count; ++$i) { $result += array_slice($a1, $i, 1) + array_slice($a2, $i, 1); } var_export($result);
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array ( 'a' => 0, 'b' => 3, 'c' => 1, 'd' => 4, 'e' => 2, 'f' => 5, )
preferences:
91.71 ms | 407 KiB | 5 Q