尝试使用PHP多维数组创建无限级别嵌套的ulli菜单

尝试使用PHP多维数组创建无限级别嵌套的ulli菜单

这是我有http://codepad.org/iDoXXsLX

有像这样的数组

Array
(
[0] => Array
    (
        [NumberRenamed] => 17
        [TopicName] => Products
        [UpperLevelNumberRenamed] => 0
    )

[17] => Array
    (
        [0] => Array
            (
                [1] => Array
                    (
                        [NumberRenamed] => 18
                        [TopicName] => Computers
                        [UpperLevelNumberRenamed] => 17
                    )
            )
    )

[18] => Array
    (
        [0] => Array
            (
                [2] => Array
                    (
                        [NumberRenamed] => 16
                        [TopicName] => Laptops
                        [UpperLevelNumberRenamed] => 18
                    )
            )
    )

[16] => Array
    (
        [0] => Array
            (
                [4] => Array
                    (
                        [NumberRenamed] => 8
                        [TopicName] => Dell
                        [UpperLevelNumberRenamed] => 16
                    )
            )
    )
)

顶级项目是Products,第一个子级别项目是Computers,下一个子级别是Laptops,然后再次下一个子级别Dell

对于每个子级别项目UpperLevelNumberRenamed==到最接近的上级NumberRenamed.

想得到这样的结果

Products
  Computers
    Laptops
      Dell
      Acer
    Desktops
Home

试过这个

foreach( $main_topics as $k_main_topics => $v_main_topics ){

if( isset($v_main_topics['UpperLevelNumberRenamed']) and $v_main_topics['UpperLevelNumberRenamed'] == 0 ){
//print only top level topics
echo $v_main_topics['TopicName']. '
';
}

else{//if not top level topic

foreach( $v_main_topics[0] as $k_v_main_topics_0 => $v_v_main_topics_0 ){
echo $v_v_main_topics_0['TopicName']. '
';
}//foreach( $v_main_topics[0] as $k_v_main_topics_0 => $v_v_main_topics_0 )

}//else{

}//foreach( $main_topics as $k_main_topics => $v_main_topics )

但得到这个

Products
Home
Computers
Laptops
Desktops
Dell
Acer

有些不对劲,但无法理解是什么.请提出建议需要纠正/更改代码的内容

尝试另一种方式

初始数组是一维数组.试图从一维获得ul li导航.

这是我做的http://codepad.org/OLtxyL4X