PHP：将list列表转为tree树形数据

采用递归将数据列表转换成树

$list = [ ["id" => 1, "name" => "头条", "parent_id" => 0], ["id" => 2, "name" => "快讯", "parent_id" => 0], ["id" => 3, "name" => "情感", "parent_id" => 2], ["id" => 4, "name" => "成人", "parent_id" => 3]
];

  

 

  
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/**
 * 采用递归将数据列表转换成树
 *
 * @param $dataArr 数据列表
 * @param int $rootId 根节点ID
 * @param string $pkName 主键名
 * @param string $pIdName 父节点id名
 * @param string $childName  子节点名称
 * @return array
 */
function ListToTreeRecursive($dataArr, $rootId = 0, $pkName = 'id', $pIdName = 'parent_id', $childName = 'children')
{ $arr = []; foreach ($dataArr as $sorData) { if ($sorData[$pIdName] == $rootId) { $children = ListToTreeRecursive($dataArr, $sorData[$pkName]); if($children){ $sorData[$childName] = $children; } $arr[] = $sorData; } } return $arr;
}

$tree = ListToTreeRecursive($list);
echo json_encode($tree, JSON_UNESCAPED_UNICODE);

  

 

  
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[ { "id":1, "name":"头条", "parent_id":0 }, { "id":2, "name":"快讯", "parent_id":0, "children":[ { "id":3, "name":"情感", "parent_id":2, "children":[ { "id":4, "name":"成人", "parent_id":3 } ] } ] }
]

  

 

  
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参考
PHP List数据集/数组转换成树状结构Tree

文章来源: pengshiyu.blog.csdn.net，作者：彭世瑜，版权归原作者所有，如需转载，请联系作者。

原文链接：pengshiyu.blog.csdn.net/article/details/117511179