php从多维数组动态创建导航菜单

2022-01-10 00:00:00 arrays multidimensional-array loops navigation php

我对此进行了研究，但无法找到确切的答案.此处与此相关的大多数问题/答案似乎尚未完成.如果有人知道类似于我的问题的最终解决方案，请指出我的方向！

I did research on this, and wasn't able to find an exact answer. Most of the questions/answers on here pertaining to this seem to be unfinished. If anyone knows of a finished solution similar to my question, please point me in that direction!

这是我的数组:

Array
(
['home'] => Array
    (
        [0] => sub-home1
        [1] => sub-home2
    )

['about'] => Array
    (
        [0] => sub-about
        ['about2'] => Array
            (
                [0] => sub-sub-about
            )

    )

['staff'] => Array
    (
        [0] => sub-staff1
        [1] => sub-staff2
    )

['contact'] => contact
)

我想把它变成这样:

<ul>
    <li><a href="">home<a/>
        <ul>
            <li><a href="">sub-home1</a></li>
            <li><a href="">sub-home2</a></li>
        </ul>
    </li>
    <li><a href="">about<a/>
        <ul>
            <li><a href="">sub-about</a></li>
            <li><a href="">about2</a>
                <ul>
                    <li><a href="">sub-sub-about<a/></li>
                </ul>
            </li>
        </ul>
    </li>
    <li><a href="">staff<a/>
        <ul>
            <li><a href="">sub-staff1</a></li>
            <li><a href="">sub-staff2</a></li>
        </ul>
    </li>
    <li><a href="">contact<a/></li>
</ul>

数组将动态生成，但限制为 3 个级别，例如:about->about2->sub-sub-about.我尝试解决这个问题:PHP/MySQL Navigation Menu 但它们看起来并不真正得出结论?我熟悉 foreach 的 while 和 for 循环，但我似乎无法理解这个.

The array will be dynamically generated, but will have a limit of 3 levels ex: about->about2->sub-sub-about. I tried going off of this question: PHP/MySQL Navigation Menu but they didn't really seem to come to a conclusion? I am familiar with foreach's whiles and for loops but I just can't seem to wrap my head around this one.

Enzino，您的代码有效！

推荐答案

这是我的解决方案:

Here is my solution:

<?php

function MakeMenu($items, $level = 0) {
    $ret = "";
    $indent = str_repeat(" ", $level * 2);
    $ret .= sprintf("%s<ul>
", $indent);
    $indent = str_repeat(" ", ++$level * 2);
    foreach ($items as $item => $subitems) {
        if (!is_numeric($item)) {
            $ret .= sprintf("%s<li><a href=''>%s</a>", $indent, $item);
        }
        if (is_array($subitems)) {
            $ret .= "
";
            $ret .= MakeMenu($subitems, $level + 1);
            $ret .= $indent;
        } else if (strcmp($item, $subitems)){
            $ret .= sprintf("%s<li><a href=''>%s</a>", $indent, $subitems);
        }
        $ret .= sprintf("</li>
", $indent);
    }
    $indent = str_repeat(" ", --$level * 2);
    $ret .= sprintf("%s</ul>
", $indent);
    return($ret);
}

$menu = Array(
            'home' => Array("sub-home1", "sub-home2"),
            'about' => Array("sub-about", "about2" => Array("sub-sub-about")),
            'staff' => Array("sub-staff1", "sub-staff2"),
            'contact' => "contact"
        );

print_r($menu);

echo MakeMenu($menu);

?>

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