阵列级别查找＆amp;在PHP多维树结构数组

Question

这里我使用Tree结构数组作为我的php项目。在这个数组中，我想在编程中找到数组级别，并将数组节点级别更新为数组中的一个字段。 这是我的阵列：

Array(
    [id] => test1
    [data] => Array([balance] => 0 )
    [has_children] => 1
    [children] => Array(
            [0] => Array
                ([id] => test2
                [data] => Array([balance] => 45)
                [has_children] => 
                )
            [1] => Array(
                    [id] => test3
                    [data] => Array([balance] => 78)
                    [has_children] => 
                )
            [2] => Array(
                    [id] => test55
                    [data] => Array([balance] => 0)
                    [has_children] => 1
                    [children] => Array(
                            [0] => Array(
                                    [id] => test45
                                    [data] => Array([balance] => 90)
                                    [has_children] => 
                                )
                        )
                )
            [3] => Array(
                    [id] => test567
                    [data] => Array([balance] => 123)
                    [has_children] => 
                )
            [4] => Array(
                    [id] => test79
                    [data] => Array([balance] => 34)
                    [has_children] => 
                )
        )
)

动态创建的数组。所以我无法找到阵列深度和每个节点级别。例如：test1为1级，test2为2级，test3为2级，test55为2级，test 45为3级，test567＆amp; test79为2级。