将平面数组转换为具有节点值的多维数组

Question

我有一个数组，看起来像这样(示例中改为food，它实际上是业务主题标签的分类法(：

Array
(
    [fruit] => Fruit
    [fruit/apple] => Apple
    [fruit/banana] => Banana
    [fruit/passion-fruit] => Passion fruit
    [vegetable] => Vegetable
    [vegetable/beans] => Beans
    [vegetable/beans/runner-beans] => Runner beans        
)

我想使用递归(大概(将其更改为：

Array
(
    [fruit] => Array
        (
            [title] => Fruit
            [children] => Array
                (
                    [apple] => Array
                        (
                            [title] => Apple
                        )
                    [banana] => Array
                        (
                            [title] => Banana
                        )
                    [passion-fruit] => Array
                        (
                            [title] => Passion fruit
                        )
                )
        )
    [vegetable] => Array
        (
            [title] => Vegetable
            [children] => Array
                (
                    [beans] => Array
                        (
                            [title] => Beans
                            [children] => Array
                                (
                                    [runner-beans] => Array
                                        (
                                            [title] => Runner beans
                                        )
                                )
                        )
                )
        )
)

我不知道怎么做。我在这里找到了其他将扁平数组转换为多维数组的例子，但没有找到有值("标题"(和自定义子节点的例子。提前感谢您的指点。

Answer 1

假设您的数组命名为$array:

$result = array();
foreach($array as $key => $value) {
    $temp =& $result;
    $path = explode('/', $key);
    foreach($path as $subkey) {
        if(!isset( $temp[$subkey])) {
            $temp[$subkey]['title'] = $value;
            $temp[$subkey]['children'] = array();
        }
        $temp =& $temp[$subkey]['children'];
    }
}

即使它创建了一个children密钥，即使没有孩子，我也会发布它。我将重新访问并编辑。