如何合并两个关联数组，以便键碰撞导致两个值的数组？

Question

I have two or more array with the same key, I want to merge these arrays but keep the value. Exp:

    $arr1 = array("message" => "message 1");
    $arr2 = array("message" => "message 2");
    echo "<pre>";
    print_r($arr3 = somefunction($arr2,$arr1));
    echo "</pre>";

I want result like this:

Array
(
     [message] => Array
          (
                [0] => message 1
                [1] => message 2
          )
)

Answer 1

array_merge_recursive() : merges the elements of one or more arrays together so that the values of one are appended to the end of the previous one. It returns the resulting array.

Example :

<?php
$arr1 = array("message" => "message 1");
$arr2 = array("message" => "message 2");
echo "<pre>";
print_r($arr3 = array_merge_recursive($arr2,$arr1));
echo "</pre>";
?>

Output :

Array
(
    [message] => Array
        (
            [0] => message 2
            [1] => message 1
        )

)

more info : http://php.net/manual/en/function.array-merge-recursive.php