嵌套数组至3级的无序列表 [英] Nested array to 3-level unordered list

问题描述

我有一个嵌套的数组，我期待把它变成一个无序列表：

I have a nested array, and am looking to turn it into an unordered list:

[2009] => Array
    (
        [Show Name 1] => Array
            (
                [0] => Class 1
                [1] => Class 2
            )

    )

[2008] => Array
    (
        [Show Name 2] => Array
            (
                [0] => Class 1
                [1] => Class 2
            )

    )

和把它转换成：

2009
    Show Name 1
        Class 1
        Class 2
2008
    Show Name 2
        Class 1
        Class 2

到目前为止，我已经完全管理的，通过能够显示年，但在那之后我得到'阵'，其中显示的名称应该是：

So far I have partially managed it, by being able to show the Year, but after that I get 'array' where the show name should be:

2012
    Array
    Array
2009
    Array
2008
    Array

我提出，使用以下内容：

I made that using the following:

    <ul>
    <?php foreach( $results as $year => $shows ): ?>
    <li><?= $year ?>
      <ul>
        <?php foreach( $shows as $show ): ?>
        <li><?= $show ?></li>
        <?php endforeach; ?>
      </ul>
    </li>
    <?php endforeach; ?>
</ul>

---

更新

我要抢YEAR_ID，SHOW_ID，标识码每个结果，这样我可以将它们传递到一个URL。是这样的：

I need to grab the YEAR_ID, SHOW_ID, CLASS_ID for each result, so that I can pass them into a URL. Something like:

        <ul class="no-bullet">
        <?php foreach( $results as $year => $shows ): ?>
        <li><h2><?= $year ?></h2>
          <ul class="no-bullet">
            <?php foreach( $shows as $show_name => $show ): ?>
            <li><h4><?= $show_name ?></h4></li>
                 <ul class="no-bullet">
                      <?php foreach( $show as $class ): ?>
                      <li><a href="results.html?year=$yearid&show=$showid&class=$classid"><?= $class ?></a></li>
                      <?php endforeach; ?>
                 </ul>
            <?php endforeach; ?>
          </ul>
        </li>
        <?php endforeach; ?>
    </ul>

不过，我一点都不知道从哪里开始。我认为foreach循环中的查询，但想通这可能是非常低效的？

However, I haven't the foggiest where to start. I considered a query within the foreach loop, but figured that may be quite inefficient?

推荐答案

您需要治疗 $显示作为一个数组，只提取你想要的部分，像这样的：

You need to treat the $show as an array and just extract the part you want, something like this:

<ul>
    <?php foreach( $results as $year => $shows ): ?>
    <li><?= $year ?>
      <ul>
        <?php foreach( $shows as $show_name => $show ): ?>
        <li><?= $show_name ?>
             <ul>
                  <?php foreach( $show as $class ): ?>
                  <li><?= $class ?></li>
                  <?php endforeach; ?>
             </ul>
        </li>
        <?php endforeach; ?>
      </ul>
    </li>
    <?php endforeach; ?>
</ul>

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