[英]Making a “tree array” from an array in php
I work with PHP. 我使用PHP。 I have an array, made like this : (the level attribute is the level of the branch in the tree I want to make)
我有一个像这样制作的数组:( level属性是我要制作的树中分支的级别)
Array (
[0] => stdClass Object
(
[value] => Array
(
[name] => Dog
[level] => 1
)
)
[1] => stdClass Object
(
[value] => Array
(
[name] => Yorkshire
[level] => 2
)
)
[2] => stdClass Object
(
[value] => Array
(
[name] => Rottweiler
[level] => 2
)
)
[3] => stdClass Object
(
[value] => Array
(
[name] => Cat
[level] => 1
)
)
)
My goal is to make some kind of tree array from it, something like this : 我的目标是从中制作某种树数组,如下所示:
Array (
[0] => stdClass Object
(
[value] => Array
(
[name] => Dog
[level] => 1
)
)
Array (
[1] => stdClass Object
(
[value] => Array
(
[name] => Yorkshire
[level] => 2
)
)
[2] => stdClass Object
(
[value] => Array
(
[name] => Rottweiler
[level] => 2
)
)
)
[3] => stdClass Object
(
[value] => Array
(
[name] => Cat
[level] => 1
)
)
)
But I really can't manage to do it. 但是我真的做不到。 I even have issues to see the algorithm!
我什至没有看到算法的问题! Any help would be greatly appreciated.
任何帮助将不胜感激。
$treelist = array();
foreach($list as $key=>$l){
if($l['level'] == 1){
$l['childs'] = array();
$treelist[] = $l;
}else{
$treelist[count($treelist-1)]['childs'][] = $l;
}
}
something like that 这样的东西
I managed to do it this way : 我设法做到这一点:
$new = array();
foreach ($arr as $a){
$new[$a['parentid']][] = $a;
}
$tree = createTree($new, $new[0]); // changed
print_r($tree);
function createTree(&$list, $parent){
$tree = array();
foreach ($parent as $k=>$l){
if(isset($list[$l['id']])){
$l['children'] = createTree($list, $list[$l['id']]);
}
$tree[] = $l;
}
return $tree;
}
from arthur : create array tree from array list 来自arthur: 从数组列表创建数组树
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.