php 在层次结构数组中进行移位

Question

我有下一个数组：

Array(
   [id] => 1
   [children] => Array(
      [2] => Array(
         [id] => 2
         [inactive] => true
         [children] => Array(
            [4] => Array(
               [id] => 4
               [children] => Array()
            )
         )
      )
      [3] => array(
         [id] => 3
         [children] => Array(
            [5] => Array(
               [id] => 5
               [inactive] => true
               [children] => Array()
            )
         )
      )
   )
)

我需要从此数组中删除 [inactive] = true 的元素。但我的问题在接下来。我应该移动数组元素。 输出应该是：

Array(
   [id] => 1
   [children] => Array(
      [4] => Array(
         [id] => 4
         [children] => Array()
      )
      [3] => array(
         [id] => 3
         [children] => Array(
         )
      )
   )
)

这是我的功能。但它会删除数组元素及其所有子元素。

public function deleteInactive($userTree)
{
    if (!empty($userTree)) {
        foreach($userTree['children'] as $userId => &$user) {
            if (array_key_exists('inactive', $user)) {
                $userTree['children'] += $user['children'];
                unset($userTree['children'][$userId]);
                $this->deleteInactive($userTree);
                break;
            }
            $this->deleteInactive($user);
        }
    }
    return $userTree;
}

你能帮我修改一下这个功能吗？

非常感谢。

Answer 1

试试这个功能，它应该按照你的要求做。

<?php
function deleteInactive($children) {
    $copy = $children;
    foreach ($copy as $key => $child) {
        if (!empty($child['inactive']) && $child['inactive'] === true) {
            unset($children[$key]);
            $children = deleteInactive($child['children']);
        } elseif (!empty($child['children']) && is_array($child['children'])) {
            $children[$key]['children'] = deleteInactive($child['children']);
        }
    }
    return $children;
} ?>

您的第一个数组也必须是有效的子数组，您可以针对您列出的数组这样调用它。

deleteInactive(array('1' => $array));

Answer 2

在取消设置节点之前，您需要将子节点附加到该节点的父节点。这不会发生（代码仅取消设置），因此孩子们丢失了。