<?php
function build(){
$items = [
1=>['categories_id'=>1,'name'=>'父1','parent_id'=>0],
9=>['categories_id'=>9,'name'=>'儿3-1','parent_id'=>3],
15=>['categories_id'=>15,'name'=>'儿3-1-1','parent_id'=>14],
3=>['categories_id'=>3,'name'=>'父3','parent_id'=>0],
4=>['categories_id'=>4,'name'=>'儿1-1','parent_id'=>1],
6=>['categories_id'=>6,'name'=>'儿1-3','parent_id'=>1],
12=>['categories_id'=>12,'name'=>'儿2-1-1','parent_id'=>7],
2=>['categories_id'=>2,'name'=>'父2','parent_id'=>0],
5=>['categories_id'=>5,'name'=>'儿1-2','parent_id'=>1],
8=>['categories_id'=>8,'name'=>'儿2-1','parent_id'=>2],
11=>['categories_id'=>11,'name'=>'儿1-1-1','parent_id'=>4],
7=>['categories_id'=>7,'name'=>'儿2-1','parent_id'=>2],
10=>['categories_id'=>10,'name'=>'儿3-1-1','parent_id'=>9],
13=>['categories_id'=>13,'name'=>'儿3-1-1','parent_id'=>10],
14=>['categories_id'=>14,'name'=>'儿3-1-1','parent_id'=>13],
16=>['categories_id'=>16,'name'=>'儿3-1-1','parent_id'=>10],
];
$tree = array();
foreach($items as $cid => $item){
if(isset($items[$item['parent_id']])){
// var_dump($tree);
$items[$item['parent_id']]['childs'][$cid] = &$items[$cid];
}else{
$tree[$cid] = &$items[$cid];
}
}
return $tree;
}
$tree = build();
// print_r($tree);
foreach ($tree as $cid => $item) {
var_dump($item);
}
- Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- array(4) {
["categories_id"]=>
int(1)
["name"]=>
string(4) "父1"
["parent_id"]=>
int(0)
["childs"]=>
array(3) {
[4]=>
array(4) {
["categories_id"]=>
int(4)
["name"]=>
string(6) "儿1-1"
["parent_id"]=>
int(1)
["childs"]=>
array(1) {
[11]=>
array(3) {
["categories_id"]=>
int(11)
["name"]=>
string(8) "儿1-1-1"
["parent_id"]=>
int(4)
}
}
}
[6]=>
array(3) {
["categories_id"]=>
int(6)
["name"]=>
string(6) "儿1-3"
["parent_id"]=>
int(1)
}
[5]=>
array(3) {
["categories_id"]=>
int(5)
["name"]=>
string(6) "儿1-2"
["parent_id"]=>
int(1)
}
}
}
array(4) {
["categories_id"]=>
int(3)
["name"]=>
string(4) "父3"
["parent_id"]=>
int(0)
["childs"]=>
array(1) {
[9]=>
array(4) {
["categories_id"]=>
int(9)
["name"]=>
string(6) "儿3-1"
["parent_id"]=>
int(3)
["childs"]=>
array(1) {
[10]=>
array(4) {
["categories_id"]=>
int(10)
["name"]=>
string(8) "儿3-1-1"
["parent_id"]=>
int(9)
["childs"]=>
array(2) {
[13]=>
array(4) {
["categories_id"]=>
int(13)
["name"]=>
string(8) "儿3-1-1"
["parent_id"]=>
int(10)
["childs"]=>
array(1) {
[14]=>
array(4) {
["categories_id"]=>
int(14)
["name"]=>
string(8) "儿3-1-1"
["parent_id"]=>
int(13)
["childs"]=>
array(1) {
[15]=>
array(3) {
["categories_id"]=>
int(15)
["name"]=>
string(8) "儿3-1-1"
["parent_id"]=>
int(14)
}
}
}
}
}
[16]=>
array(3) {
["categories_id"]=>
int(16)
["name"]=>
string(8) "儿3-1-1"
["parent_id"]=>
int(10)
}
}
}
}
}
}
}
array(4) {
["categories_id"]=>
int(2)
["name"]=>
string(4) "父2"
["parent_id"]=>
int(0)
["childs"]=>
array(2) {
[8]=>
array(3) {
["categories_id"]=>
int(8)
["name"]=>
string(6) "儿2-1"
["parent_id"]=>
int(2)
}
[7]=>
array(4) {
["categories_id"]=>
int(7)
["name"]=>
string(6) "儿2-1"
["parent_id"]=>
int(2)
["childs"]=>
array(1) {
[12]=>
array(3) {
["categories_id"]=>
int(12)
["name"]=>
string(8) "儿2-1-1"
["parent_id"]=>
int(7)
}
}
}
}
}
preferences:
213.39 ms | 411 KiB | 196 Q