<?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);
function get($tree, $level) {
// static $tree;
$lv = 1;
$res = array();
foreach ($tree as $cid => $item) {
/*if ($item['parent_id'] == 0) {
if ($lv == $level) {
continue;
}
$res[$cid] = $item;
$lv ++;
}*/
// var_dump($item);
if ($item['parent_id'] == 0) {
$lv = 1;
}
if (is_array($item)) {
$lv ++;
return get($item, $level);
}
var_dump($lv);
}
}
$get = get($tree, 2);
// var_dump($get);
- Output for 8.3.0 - 8.3.4, 8.3.6
- Array
(
[1] => Array
(
[categories_id] => 1
[name] => 父1
[parent_id] => 0
[childs] => Array
(
[4] => Array
(
[categories_id] => 4
[name] => 儿1-1
[parent_id] => 1
[childs] => Array
(
[11] => Array
(
[categories_id] => 11
[name] => 儿1-1-1
[parent_id] => 4
)
)
)
[6] => Array
(
[categories_id] => 6
[name] => 儿1-3
[parent_id] => 1
)
[5] => Array
(
[categories_id] => 5
[name] => 儿1-2
[parent_id] => 1
)
)
)
[3] => Array
(
[categories_id] => 3
[name] => 父3
[parent_id] => 0
[childs] => Array
(
[9] => Array
(
[categories_id] => 9
[name] => 儿3-1
[parent_id] => 3
[childs] => Array
(
[10] => Array
(
[categories_id] => 10
[name] => 儿3-1-1
[parent_id] => 9
[childs] => Array
(
[13] => Array
(
[categories_id] => 13
[name] => 儿3-1-1
[parent_id] => 10
[childs] => Array
(
[14] => Array
(
[categories_id] => 14
[name] => 儿3-1-1
[parent_id] => 13
[childs] => Array
(
[15] => Array
(
[categories_id] => 15
[name] => 儿3-1-1
[parent_id] => 14
)
)
)
)
)
[16] => Array
(
[categories_id] => 16
[name] => 儿3-1-1
[parent_id] => 10
)
)
)
)
)
)
)
[2] => Array
(
[categories_id] => 2
[name] => 父2
[parent_id] => 0
[childs] => Array
(
[8] => Array
(
[categories_id] => 8
[name] => 儿2-1
[parent_id] => 2
)
[7] => Array
(
[categories_id] => 7
[name] => 儿2-1
[parent_id] => 2
[childs] => Array
(
[12] => Array
(
[categories_id] => 12
[name] => 儿2-1-1
[parent_id] => 7
)
)
)
)
)
)
Warning: Trying to access array offset on int in /in/VKJ7C on line 53
int(1)
Fatal error: Uncaught TypeError: Cannot access offset of type string on string in /in/VKJ7C:53
Stack trace:
#0 /in/VKJ7C(58): get(Array, 2)
#1 /in/VKJ7C(64): get(Array, 2)
#2 {main}
thrown in /in/VKJ7C on line 53
Process exited with code 255. - Output for 8.3.5
- Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
Array
(
[1] => Array
(
[categories_id] => 1
[name] => 父1
[parent_id] => 0
[childs] => Array
(
[4] => Array
(
[categories_id] => 4
[name] => 儿1-1
[parent_id] => 1
[childs] => Array
(
[11] => Array
(
[categories_id] => 11
[name] => 儿1-1-1
[parent_id] => 4
)
)
)
[6] => Array
(
[categories_id] => 6
[name] => 儿1-3
[parent_id] => 1
)
[5] => Array
(
[categories_id] => 5
[name] => 儿1-2
[parent_id] => 1
)
)
)
[3] => Array
(
[categories_id] => 3
[name] => 父3
[parent_id] => 0
[childs] => Array
(
[9] => Array
(
[categories_id] => 9
[name] => 儿3-1
[parent_id] => 3
[childs] => Array
(
[10] => Array
(
[categories_id] => 10
[name] => 儿3-1-1
[parent_id] => 9
[childs] => Array
(
[13] => Array
(
[categories_id] => 13
[name] => 儿3-1-1
[parent_id] => 10
[childs] => Array
(
[14] => Array
(
[categories_id] => 14
[name] => 儿3-1-1
[parent_id] => 13
[childs] => Array
(
[15] => Array
(
[categories_id] => 15
[name] => 儿3-1-1
[parent_id] => 14
)
)
)
)
)
[16] => Array
(
[categories_id] => 16
[name] => 儿3-1-1
[parent_id] => 10
)
)
)
)
)
)
)
[2] => Array
(
[categories_id] => 2
[name] => 父2
[parent_id] => 0
[childs] => Array
(
[8] => Array
(
[categories_id] => 8
[name] => 儿2-1
[parent_id] => 2
)
[7] => Array
(
[categories_id] => 7
[name] => 儿2-1
[parent_id] => 2
[childs] => Array
(
[12] => Array
(
[categories_id] => 12
[name] => 儿2-1-1
[parent_id] => 7
)
)
)
)
)
)
Warning: Trying to access array offset on int in /in/VKJ7C on line 53
int(1)
Fatal error: Uncaught TypeError: Cannot access offset of type string on string in /in/VKJ7C:53
Stack trace:
#0 /in/VKJ7C(58): get(Array, 2)
#1 /in/VKJ7C(64): get(Array, 2)
#2 {main}
thrown in /in/VKJ7C on line 53
Process exited with code 255. - Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
- Array
(
[1] => Array
(
[categories_id] => 1
[name] => 父1
[parent_id] => 0
[childs] => Array
(
[4] => Array
(
[categories_id] => 4
[name] => 儿1-1
[parent_id] => 1
[childs] => Array
(
[11] => Array
(
[categories_id] => 11
[name] => 儿1-1-1
[parent_id] => 4
)
)
)
[6] => Array
(
[categories_id] => 6
[name] => 儿1-3
[parent_id] => 1
)
[5] => Array
(
[categories_id] => 5
[name] => 儿1-2
[parent_id] => 1
)
)
)
[3] => Array
(
[categories_id] => 3
[name] => 父3
[parent_id] => 0
[childs] => Array
(
[9] => Array
(
[categories_id] => 9
[name] => 儿3-1
[parent_id] => 3
[childs] => Array
(
[10] => Array
(
[categories_id] => 10
[name] => 儿3-1-1
[parent_id] => 9
[childs] => Array
(
[13] => Array
(
[categories_id] => 13
[name] => 儿3-1-1
[parent_id] => 10
[childs] => Array
(
[14] => Array
(
[categories_id] => 14
[name] => 儿3-1-1
[parent_id] => 13
[childs] => Array
(
[15] => Array
(
[categories_id] => 15
[name] => 儿3-1-1
[parent_id] => 14
)
)
)
)
)
[16] => Array
(
[categories_id] => 16
[name] => 儿3-1-1
[parent_id] => 10
)
)
)
)
)
)
)
[2] => Array
(
[categories_id] => 2
[name] => 父2
[parent_id] => 0
[childs] => Array
(
[8] => Array
(
[categories_id] => 8
[name] => 儿2-1
[parent_id] => 2
)
[7] => Array
(
[categories_id] => 7
[name] => 儿2-1
[parent_id] => 2
[childs] => Array
(
[12] => Array
(
[categories_id] => 12
[name] => 儿2-1-1
[parent_id] => 7
)
)
)
)
)
)
Warning: Trying to access array offset on value of type int in /in/VKJ7C on line 53
int(1)
Fatal error: Uncaught TypeError: Cannot access offset of type string on string in /in/VKJ7C:53
Stack trace:
#0 /in/VKJ7C(58): get(Array, 2)
#1 /in/VKJ7C(64): get(Array, 2)
#2 {main}
thrown in /in/VKJ7C on line 53
Process exited with code 255. - Output for 7.4.0 - 7.4.33
- Array
(
[1] => Array
(
[categories_id] => 1
[name] => 父1
[parent_id] => 0
[childs] => Array
(
[4] => Array
(
[categories_id] => 4
[name] => 儿1-1
[parent_id] => 1
[childs] => Array
(
[11] => Array
(
[categories_id] => 11
[name] => 儿1-1-1
[parent_id] => 4
)
)
)
[6] => Array
(
[categories_id] => 6
[name] => 儿1-3
[parent_id] => 1
)
[5] => Array
(
[categories_id] => 5
[name] => 儿1-2
[parent_id] => 1
)
)
)
[3] => Array
(
[categories_id] => 3
[name] => 父3
[parent_id] => 0
[childs] => Array
(
[9] => Array
(
[categories_id] => 9
[name] => 儿3-1
[parent_id] => 3
[childs] => Array
(
[10] => Array
(
[categories_id] => 10
[name] => 儿3-1-1
[parent_id] => 9
[childs] => Array
(
[13] => Array
(
[categories_id] => 13
[name] => 儿3-1-1
[parent_id] => 10
[childs] => Array
(
[14] => Array
(
[categories_id] => 14
[name] => 儿3-1-1
[parent_id] => 13
[childs] => Array
(
[15] => Array
(
[categories_id] => 15
[name] => 儿3-1-1
[parent_id] => 14
)
)
)
)
)
[16] => Array
(
[categories_id] => 16
[name] => 儿3-1-1
[parent_id] => 10
)
)
)
)
)
)
)
[2] => Array
(
[categories_id] => 2
[name] => 父2
[parent_id] => 0
[childs] => Array
(
[8] => Array
(
[categories_id] => 8
[name] => 儿2-1
[parent_id] => 2
)
[7] => Array
(
[categories_id] => 7
[name] => 儿2-1
[parent_id] => 2
[childs] => Array
(
[12] => Array
(
[categories_id] => 12
[name] => 儿2-1-1
[parent_id] => 7
)
)
)
)
)
)
Notice: Trying to access array offset on value of type int in /in/VKJ7C on line 53
int(1)
Warning: Illegal string offset 'parent_id' in /in/VKJ7C on line 53
int(1)
Notice: Trying to access array offset on value of type int in /in/VKJ7C on line 53
int(1)
Notice: Undefined index: parent_id in /in/VKJ7C on line 53
Notice: Trying to access array offset on value of type int in /in/VKJ7C on line 53
int(1)
Warning: Illegal string offset 'parent_id' in /in/VKJ7C on line 53
int(1)
Notice: Trying to access array offset on value of type int in /in/VKJ7C on line 53
int(1)
Notice: Undefined index: parent_id in /in/VKJ7C on line 53
Notice: Trying to access array offset on value of type int in /in/VKJ7C on line 53
int(1)
Warning: Illegal string offset 'parent_id' in /in/VKJ7C on line 53
int(1)
Notice: Trying to access array offset on value of type int in /in/VKJ7C on line 53
int(1)
- Output for 7.3.32 - 7.3.33
- Array
(
[1] => Array
(
[categories_id] => 1
[name] => 父1
[parent_id] => 0
[childs] => Array
(
[4] => Array
(
[categories_id] => 4
[name] => 儿1-1
[parent_id] => 1
[childs] => Array
(
[11] => Array
(
[categories_id] => 11
[name] => 儿1-1-1
[parent_id] => 4
)
)
)
[6] => Array
(
[categories_id] => 6
[name] => 儿1-3
[parent_id] => 1
)
[5] => Array
(
[categories_id] => 5
[name] => 儿1-2
[parent_id] => 1
)
)
)
[3] => Array
(
[categories_id] => 3
[name] => 父3
[parent_id] => 0
[childs] => Array
(
[9] => Array
(
[categories_id] => 9
[name] => 儿3-1
[parent_id] => 3
[childs] => Array
(
[10] => Array
(
[categories_id] => 10
[name] => 儿3-1-1
[parent_id] => 9
[childs] => Array
(
[13] => Array
(
[categories_id] => 13
[name] => 儿3-1-1
[parent_id] => 10
[childs] => Array
(
[14] => Array
(
[categories_id] => 14
[name] => 儿3-1-1
[parent_id] => 13
[childs] => Array
(
[15] => Array
(
[categories_id] => 15
[name] => 儿3-1-1
[parent_id] => 14
)
)
)
)
)
[16] => Array
(
[categories_id] => 16
[name] => 儿3-1-1
[parent_id] => 10
)
)
)
)
)
)
)
[2] => Array
(
[categories_id] => 2
[name] => 父2
[parent_id] => 0
[childs] => Array
(
[8] => Array
(
[categories_id] => 8
[name] => 儿2-1
[parent_id] => 2
)
[7] => Array
(
[categories_id] => 7
[name] => 儿2-1
[parent_id] => 2
[childs] => Array
(
[12] => Array
(
[categories_id] => 12
[name] => 儿2-1-1
[parent_id] => 7
)
)
)
)
)
)
int(1)
Warning: Illegal string offset 'parent_id' in /in/VKJ7C on line 53
int(1)
int(1)
int(1)
Warning: Illegal string offset 'parent_id' in /in/VKJ7C on line 53
int(1)
int(1)
int(1)
Warning: Illegal string offset 'parent_id' in /in/VKJ7C on line 53
int(1)
int(1)
- Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31
- Array
(
[1] => Array
(
[categories_id] => 1
[name] => 父1
[parent_id] => 0
[childs] => Array
(
[4] => Array
(
[categories_id] => 4
[name] => 儿1-1
[parent_id] => 1
[childs] => Array
(
[11] => Array
(
[categories_id] => 11
[name] => 儿1-1-1
[parent_id] => 4
)
)
)
[6] => Array
(
[categories_id] => 6
[name] => 儿1-3
[parent_id] => 1
)
[5] => Array
(
[categories_id] => 5
[name] => 儿1-2
[parent_id] => 1
)
)
)
[3] => Array
(
[categories_id] => 3
[name] => 父3
[parent_id] => 0
[childs] => Array
(
[9] => Array
(
[categories_id] => 9
[name] => 儿3-1
[parent_id] => 3
[childs] => Array
(
[10] => Array
(
[categories_id] => 10
[name] => 儿3-1-1
[parent_id] => 9
[childs] => Array
(
[13] => Array
(
[categories_id] => 13
[name] => 儿3-1-1
[parent_id] => 10
[childs] => Array
(
[14] => Array
(
[categories_id] => 14
[name] => 儿3-1-1
[parent_id] => 13
[childs] => Array
(
[15] => Array
(
[categories_id] => 15
[name] => 儿3-1-1
[parent_id] => 14
)
)
)
)
)
[16] => Array
(
[categories_id] => 16
[name] => 儿3-1-1
[parent_id] => 10
)
)
)
)
)
)
)
[2] => Array
(
[categories_id] => 2
[name] => 父2
[parent_id] => 0
[childs] => Array
(
[8] => Array
(
[categories_id] => 8
[name] => 儿2-1
[parent_id] => 2
)
[7] => Array
(
[categories_id] => 7
[name] => 儿2-1
[parent_id] => 2
[childs] => Array
(
[12] => Array
(
[categories_id] => 12
[name] => 儿2-1-1
[parent_id] => 7
)
)
)
)
)
)
int(1)
Warning: Illegal string offset 'parent_id' in /in/VKJ7C on line 53
int(1)
int(1)
Notice: Undefined index: parent_id in /in/VKJ7C on line 53
int(1)
Warning: Illegal string offset 'parent_id' in /in/VKJ7C on line 53
int(1)
int(1)
Notice: Undefined index: parent_id in /in/VKJ7C on line 53
int(1)
Warning: Illegal string offset 'parent_id' in /in/VKJ7C on line 53
int(1)
int(1)
preferences:
169.11 ms | 418 KiB | 162 Q