我正在尝试使用下面这种格式构建一个HTML树，它可以根据需要深入多个级别，但它应该遵循这种格式。
我作为数据源所拥有的是一个PHP数组，它是通过Magento中的API调用构建的。
我的PHP数组看起来像这样......
Array
(
[category_id] => 1
[parent_id] => 0
[name] => Root Catalog
[is_active] =>
[position] => 0
[level] => 0
[children] => Array
(
[0] => Array
(
[category_id] => 2
[parent_id] => 1
[name] => Default Category
[is_active] => 1
[position] => 1
[level] => 1
[children] => Array
(
[0] => Array
(
[category_id] => 263
[parent_id] => 2
[name] => Texas Roadhouse
[is_active] => 1
[position] => 1
[level] => 2
[children] => Array
(
)
)
[1] => Array
(
[category_id] => 265
[parent_id] => 2
[name] => Bubba's
[is_active] => 1
[position] => 2
[level] => 2
[children] => Array
(
)
)
[2] => Array
(
[category_id] => 3
[parent_id] => 2
[name] => Neon Signs
[is_active] => 1
[position] => 3
[level] => 2
[children] => Array
(
[0] => Array
(
[category_id] => 12
[parent_id] => 3
[name] => Custom Neon Signs
[is_active] => 1
[position] => 1
[level] => 3
[children] => Array
(
[0] => Array
(
[category_id] => 257
[parent_id] => 12
[name] => Animals Custom Neon Signs
[is_active] => 0
[position] => 1
[level] => 4
[children] => Array
(
)
)
[1] => Array
(
[category_id] => 258
[parent_id] => 12
[name] => Bar Beer Cocktails Custom Neon Signs
[is_active] => 0
[position] => 2
[level] => 4
[children] => Array
(
)
)
我需要将我的PHP数组转换成的HTML输出应采用这种格式...
<div id="tree">
<ul>
<li><input type="checkbox"><span>Node 1</span>
<ul>
<li><input type="checkbox"><span>Node 1.1</span>
<ul>
<li><input type="checkbox"><span>Node 1.1.1</span>
</ul>
</ul>
<ul>
<li><input type="checkbox"><span>Node 1.2</span>
<ul>
<li><input type="checkbox"><span>Node 1.2.1</span>
<li><input type="checkbox"><span>Node 1.2.2</span>
<li><input type="checkbox"><span>Node 1.2.3</span>
<ul>
<li><input type="checkbox"><span>Node 1.2.3.1</span>
<li><input type="checkbox"><span>Node 1.2.3.2</span>
</ul>
<li><input type="checkbox"><span>Node 1.2.4</span>
<li><input type="checkbox"><span>Node 1.2.5</span>
<li><input type="checkbox"><span>Node 1.2.6</span>
</ul>
</ul>
<li><input type="checkbox"><span>Node 2</span>
<ul>
<li><input type="checkbox"><span>Node 2.1</span>
<ul>
<li><input type="checkbox"><span>Node 2.1.1</span>
</ul>
<li><input type="checkbox"><span>Node 2.2</span>
<ul>
<li><input type="checkbox"><span>Node 2.2.1</span>
<li><input type="checkbox"><span>Node 2.2.2</span>
<li><input type="checkbox"><span>Node 2.2.3</span>
<ul>
<li><input type="checkbox"><span>Node 2.2.3.1</span>
<li><input type="checkbox"><span>Node 2.2.3.2</span>
</ul>
<li><input type="checkbox"><span>Node 2.2.4</span>
<li><input type="checkbox"><span>Node 2.2.5</span>
<li><input type="checkbox"><span>Node 2.2.6</span>
</ul>
</ul>
</ul>
</div>
我真的不知道如何实现这一目标，我知道我需要一遍又一遍地重复数组，但我不知道如何做到这一点，如果有人可以提供帮助，我将非常感谢您的时间和知识< / p>
答案 0 :(得分：3)
您可以使用递归函数：
function buildTree($data, $parentLevel = "") {
echo "<ul>";
$nodeCount = 1;
foreach ($data as $value) {
if ($parentLevel != "") {
$currentLevel = $parentLevel . "." . $nodeCount;
} else {
$currentLevel = $nodeCount;
}
// Output the list element
echo "<li><input type=\"checkbox\"><span>Node " . $parentLevel . "</span></li>";
if (isset($value["children"]) && count($value["children"]) > 0) {
buildTree($value["children"], $parentLevel . "." . $nodeCount);
}
$nodeCount++;
}
echo "</ul>";
}