php显示多级treenode菜单递归

Question

我有一个关于这个的帖子，虽然我现在有一个与同一主题相关的不同问题。您可能想在此处参考原始问题。 php display multilevel treenode menu

现在数组是按树节点显示的，它似乎不是完全递归的。我注意到当第一个元素是子节点时，它不会显示为子节点。

我尝试先进行 krsort 然后再进行 ksort。

function getChildren(&$rows, $p = 0) {
    $r = array();
    krsort($rows);
    foreach($rows as $row_id => $row) {
        if ($row['parent_node']==$p) {
            $r[$row['product_category_code']] = getChildren($rows, $row['product_category_code']);
            unset($rows[$row_id]);
        }
    }
    ksort($rows);
    return $r;
}

数组的结构如下：

array
  0 => 
    array
      'product_category_code' => string 'akamia' (length=6)
      'product_category_desc' => string 'Akamia' (length=6)
      'parent_node' => string 'summer-dress' (length=12)
      'inactive' => string '0' (length=1)
      'sort' => string '0' (length=1)
      'created_by' => string '1' (length=1)
      'created_date' => string '2014-04-01 10:03:42' (length=19)
      'modified_by' => string '1' (length=1)
      'modified_date' => string '2014-04-01 10:03:47' (length=19)
  1 => 
    array
      'product_category_code' => string 'bracelets' (length=9)
      'product_category_desc' => string 'Bracelets' (length=9)
      'parent_node' => string '' (length=0)
      'inactive' => string '0' (length=1)
      'sort' => string '0' (length=1)
      'created_by' => string '1' (length=1)
      'created_date' => string '2014-03-14 22:04:08' (length=19)
      'modified_by' => string '1' (length=1)
      'modified_date' => string '2014-03-14 22:09:05' (length=19)
  2 => 
    array
      'product_category_code' => string 'floral-dress' (length=12)
      'product_category_desc' => string 'Floral Dress' (length=12)
      'parent_node' => string '' (length=0)
      'inactive' => string '0' (length=1)
      'sort' => string '0' (length=1)
      'created_by' => string '1' (length=1)
      'created_date' => string '2014-03-14 22:09:49' (length=19)
      'modified_by' => string '1' (length=1)
      'modified_date' => string '2014-04-01 10:03:30' (length=19)
  3 => 
    array
      'product_category_code' => string 'flowery-bracelets' (length=17)
      'product_category_desc' => string 'Flowery Bracelets' (length=17)
      'parent_node' => string 'bracelets' (length=9)
      'inactive' => string '0' (length=1)
      'sort' => string '0' (length=1)
      'created_by' => string '1' (length=1)
      'created_date' => string '2014-03-14 22:09:16' (length=19)
      'modified_by' => string '1' (length=1)
      'modified_date' => string '2014-03-30 19:08:44' (length=19)
  4 => 
    array
      'product_category_code' => string 'small-flowery-bracelets' (length=23)
      'product_category_desc' => string 'Small Flowery Bracelets' (length=23)
      'parent_node' => string 'flowery-bracelets' (length=17)
      'inactive' => string '0' (length=1)
      'sort' => string '0' (length=1)
      'created_by' => string '1' (length=1)
      'created_date' => string '2014-03-14 22:08:35' (length=19)
      'modified_by' => string '1' (length=1)
      'modified_date' => string '2014-03-30 19:09:44' (length=19)
  5 => 
    array
      'product_category_code' => string 'summer-dress' (length=12)
      'product_category_desc' => string 'Summer Dress' (length=12)
      'parent_node' => string '' (length=0)
      'inactive' => string '0' (length=1)
      'sort' => string '0' (length=1)
      'created_by' => string '1' (length=1)
      'created_date' => string '2014-03-14 22:09:29' (length=19)
      'modified_by' => string '0' (length=1)
      'modified_date' => null

输出（没有 krsort / ksort）显示这个，这是错误的：

• Akamai
• 手链
  • 花朵手链
    • 小花手链
• 碎花连衣裙
• 夏季连衣裙

这应该是输出：

• 手链
  • 花朵手链
    • 小花手链
• 碎花连衣裙
• 夏季连衣裙
  • Akamai

Answer 1

没关系，我得到了答案。 function getChildren(&$rows, $p = 0) 上的 $p 应该是 $p = '' 而不是零 (0)，因为数组上的父节点为空。傻我。呵呵