迭代外部数组，然后迭代内部数组.将每个值添加到结果中的索引数组.

Iterate the outer array, then the inner arrays. Add each value to an indexed array in your result.

foreach ($your_array as $sub_array) {
    foreach ($sub_array as $key => $value) {
        $result[$key][] = $value;
    }
}