3v4l.org

run code in 300+ PHP versions simultaneously
<?php $ar1 = array("color" => array("favorite" => "red","jaune") , 5); $ar2 = array("color" => array("favorite" => "green", "blue") ,10); $result = array_merge_recursive($ar1, $ar2); print_r($result);
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
Array ( [color] => Array ( [favorite] => Array ( [0] => red [1] => green ) [0] => jaune [1] => blue ) [0] => 5 [1] => 10 )

preferences:
315.3 ms | 406 KiB | 456 Q