如何组合两个不同的多维数组（PHP）

Question

I want to combine two different multi-dimensional arrays, with one providing the correct structure (keys) and the other one the data to fill it (values).

Notice that I can't control how the arrays are formed, the structure might vary in different situations.

$structure = [
    "a",
    "b" => [
        "b1",
        "b2" => [
            "b21",
            "b22"
        ]
    ]
];

$data = [A, B1, B21, B22];

Expected result:

$array = [
    "a" => "A",
    "b" => [
        "b1" => "B1",
        "b2" => [
            "b21" => "B21",
            "b22" => "B22"
        ]
    ]
];

Answer 1

You can use the following code, however it will only work if number of elements in $data is same or more than $structure.

$filled = 0;
array_walk_recursive ($structure, function (&$val)  use (&$filled, $data) {
    $val = array( $val => $data[ $filled ] ); 
    $filled++; 
});

print_r( $structure );

Here is a working demo