3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = array(1,2,3); $arr2 = array(3,4,5); function compareArrays($arr1, &$arr2) { foreach($arr1 as $k => $v) { if (!in_array($v, $arr2)) { $arr2[$k] = 0; } } } print_r(compareArrays($arr1, $arr2));
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4

preferences:
255.31 ms | 405 KiB | 456 Q