- array_merge_recursive: documentation ( source)
- print_r: documentation ( source)
<?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);