在PHP/Wordpress中实现嵌套数组的过滤

function filterNestedArray($array, $filter) {
    foreach ($array as $key => $value) {
        if (is_array($value)) {
            $array[$key] = filterNestedArray($value, $filter);
        } else {
            if (in_array($key, $filter)) {
                unset($array[$key]);
            }
        }
    }
    return $array;
}

// 示例用法
$data = array(
    'name' => 'John',
    'age' => 30,
    'address' => array(
        'street' => '123 Main St',
        'city' => 'New York',
        'country' => 'USA'
    )
);

$filter = array('age', 'country');

$result = filterNestedArray($data, $filter);
print_r($result);

Array
(
    [name] => John
    [address] => Array
        (
            [street] => 123 Main St
            [city] => New York
        )
)