PHP :递归地将parant子项添加到多维数组中

function addParentToMultiArray($array, $parent) {
    foreach ($array as &$item) {
        $item['parent'] = $parent;
        if (isset($item['children'])) {
            $item['children'] = addParentToMultiArray($item['children'], $item);
        }
    }
    return $array;
}

// 示例用法
$data = [
    [
        'name' => 'A',
        'children' => [
            [
                'name' => 'B',
                'children' => [
                    [
                        'name' => 'C'
                    ]
                ]
            ],
            [
                'name' => 'D'
            ]
        ]
    ],
    [
        'name' => 'E'
    ]
];

$result = addParentToMultiArray($data, null);
print_r($result);