3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = [1, 2, 3, 7, 8, 9]; $arr2 = [4, 5, 6, 10, 11, 12, 13, 14]; $result = []; while ($arr1 || $arr2) { array_push($result, ...array_splice($arr1, 0, 3), ...array_splice($arr2, 0, 3)); } var_export($result);
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 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 ( 0 => 1, 1 => 2, 2 => 3, 3 => 4, 4 => 5, 5 => 6, 6 => 7, 7 => 8, 8 => 9, 9 => 10, 10 => 11, 11 => 12, 12 => 13, 13 => 14, )
preferences:
155.57 ms | 407 KiB | 5 Q