多维数组从父数组中获取值

Question

我正在尝试构建我的网站页面的嵌套数组。我已经有一个递归数组来嵌套基于父ID的结构。我想为每个后续数组添加一个键，该数组是页面的url。该网址将根据细分动态构建。

我的网页数组如下所示：

Array
(
    [0] => Array
        (
            [title] => Homepage
            [url_title] => homepage
            [parent] => 
            [pages] => Array
                (
                    [0] => Array
                        (
                            [title] => About
                            [url_title] => about
                            [parent] => 1
                            [pages] => 
                            [_id] => 2
                        )

                    [1] => Array
                        (
                            [title] => Blog
                            [url_title] => blog
                            [parent] => 1
                            [pages] => Array
                                (
                                    [0] => Array
                                        (
                                            [title] => Archives
                                            [url_title] => archives
                                            [parent] => 3
                                            [pages] => 
                                            [_id] => 4
                                        )

                                )

                            [_id] => 3
                        )

                )

            [_id] => 1
        )

)

我能够编写另一个遍历数组的递归函数，并创建另一个路径数组，如：

Array
(
    [1] => '/homepage',
    [2] => '/homepage/about',
    [3] => '/homepage/blog',
    [4] => '/homepage/blog/archives',
)

对于我的模板引擎，虽然我希望将这些值包含在嵌套数组中。