PHP - 将2个数组的值连接成1个新数组

Question

I have 2 separate multidimensional arrays that have the same structure. Example:

Array
(
    [0] => Array
        (
            [uploadData] => 1234 Main St
        )

    [1] => Array
        (
            [uploadData] => 5678 Elm St
        )

    [2] => Array
        (
            [uploadData] => 9879 New St
        )

    [3] => Array
        (
            [uploadData] => 9876 Shady Lane
        )

)

Array
(
    [0] => Array
        (
            [uploadData] => Orlando
        )

    [1] => Array
        (
            [uploadData] => Tampa
        )

    [2] => Array
        (
            [uploadData] => Miami
        )

    [3] => Array
        (
            [uploadData] => West Palm Beach
        )

)

I just need to get them into 1 new array that looks like this:

Array
(
    [0] => Array
        (
            [uploadData] => 1234 Main St Orlando
        )

    [1] => Array
        (
            [uploadData] => 5678 Elm St Tampa
        )

    [2] => Array
        (
            [uploadData] => 9879 New St Miami
        )

    [3] => Array
        (
            [uploadData] => 9876 Shady Lane West Palm Beach
        )

)

I've been trying to use array_merge but I cannot get it to work.

Answer 1

Simple, recursive, key-independent solution:

function array_concat_recursive($array1, $array2){
    $result = array();
    foreach($array1 as $key => $value){
        if(isset($array2[$key])){
            if(is_array($value)){
                $result[$key] = array_concat_recursive($value, $array2[$key]);
            }else{
                $result[$key] = $value . ' ' . $array2[$key];
            }
        }
    }
    return $result;
}