3v4l.org

run code in 500+ PHP versions simultaneously
<?php $arrOne = [1, 3, 4]; $arrTwo = [2, 5]; $newArr = []; foreach($arrOne as $key => $one) { switch($key) { case 1: $newArr[] = $arrTwo[0]; break; case 4: $newArr[] = $arrTwo[1]; break; } $newArr[] = $one; } if(count($newArr, 1) < 5) { $newArr[] = $arrTwo[1]; } print_r($newArr);
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 [4] => 5 )
preferences:
85.42 ms | 1273 KiB | 4 Q