3v4l.org

run code in 300+ PHP versions simultaneously
<?php foreach(array(9,5,14) AS $key) $first[$key] = 1; foreach(array(8,15,23,12) AS $key) $second[$key] = 2; print_r($first); print_r($second);
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 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Array ( [9] => 1 [5] => 1 [14] => 1 ) Array ( [8] => 2 [15] => 2 [23] => 2 [12] => 2 )
preferences:
214.52 ms | 406 KiB | 357 Q