我有一个像这样的数组
Array
(
[0] => Array
(
[name] => Region
[id] => 3
[parent_id] => 2
[children] => Array
(
[0] => Array
(
[name] => Asia
[id] => 4
[parent_id] => 3
[children] => Array
(
[0] => Array
(
[name] => Central Asia
[id] => 6621
[parent_id] => 4
[children] => Array
(
[0] => Array
(
[name] => Afghanistan
[id] => 5
[parent_id] => 6621
[children] => Array
(
[0] => Array
(
[name] => Balkh
[id] => 6
[parent_id] => 5
[children] => Array
(
[0] => Array
(
[name] => Mazar-e-Sharif
[id] => 7
[parent_id] => 6
)
)
)
[1] => Array
(
[name] => Kabol
[id] => 10
[parent_id] => 5
)
[2] => Array
(
[name] => Qandahar
[id] => 12
[parent_id] => 5
)
)
)
)
)
[1] => Array
(
[name] => Middle East
[id] => 6625
[parent_id] => 4
[children] => Array
(
[0] => Array
(
[name] => Armenia
[id] => 14
[parent_id] => 6625
)
)
)
)
)
)
)
)
现在我想将此数组转换为树形结构中的ul-li
但它给了我奇怪的输出
例如Region我想要这样
<li id=3 parent_id=2 > Region </li>
这里我希望使用id和parent_id作为属性
php函数是
function olLiTree($tree)
{
echo '<ul>';
foreach($tree as $key => $item) {
if (is_array($item)) {
echo '<li>', $key;
olLiTree($item);
echo '</li>';
} else {
echo '<li>', $item, '</li>';
}
}
echo '</ul>';
}
<ul>
<li>0
<ul>
<li>Region</li>
<li>3</li>
<li>2</li>
<li>children
<ul>
答案 0 :(得分：9)
也许这是你寻求的递归。
function olLiTree( $tree ) {
echo '<ul>';
foreach ( $tree as $item ) {
echo "<li id=\"$item[id]\" parent_id=\"$item[parent_id]\" > $item[name] </li>";
if ( isset( $item['children'] ) ) {
olLiTree( $item['children'] );
}
}
echo '</ul>';
}
答案 1 :(得分：0)
我认为这是正确的：
function olLiTree($tree) {
echo "<ul>";
foreach ($tree as $v) {
echo "<li id='{$v['id']}' parent_id='{$v['parent_id']}'>{$v['name']}</li>";
if ($v['children'])
olLiTree($v['children']);
}
echo "</ul>";
}
输出：
地区
亚洲
中央 亚洲
阿富汗
中东Balkh
Mazar-e-Sharif
KabolQandahar亚美尼亚
答案 2 :(得分：0)
尝试一下：
/**
* requires the following keys: id, parent_id, name;
* may contain the following key: children
*
* @param array $array
* @return string ul-li html
*/
function arrayToHtml( array $array ) : string
{
$html = '';
if(count($array)) {
$html .= '<ul>';
foreach ( $array as $value ) {
if (is_array($value)) {
$idString = 'id="' . ($value['id'] ?? '0') .'"';
$parentIdString = 'parent_id="' . ($value['parent_id'] ?? '0') . '"';
$attributes = $idString . ' ' . $parentIdString;
$value['children'] = $value['children'] ?? [];
$value['name'] = $value['name'] ?? 'error';
$html .= '<li ' . $attributes . '>' . $value['name'] . ':' . $this->arrayToHtml($value['children']) . '</li>';
}
}
$html .= '</ul>';
}
return $html;
}