<?php
$arr = [
0=>['id'=>1,'name'=>'父1','father'=>0],
1=>['id'=>2,'name'=>'父2','father'=>0],
2=>['id'=>3,'name'=>'父3','father'=>0],
3=>['id'=>4,'name'=>'儿1-1','father'=>1],
4=>['id'=>5,'name'=>'儿1-2','father'=>1],
5=>['id'=>6,'name'=>'儿1-3','father'=>1],
6=>['id'=>7,'name'=>'儿2-1','father'=>2],
7=>['id'=>8,'name'=>'儿2-1','father'=>2],
8=>['id'=>9,'name'=>'儿3-1','father'=>3],
9=>['id'=>10,'name'=>'儿3-1-1','father'=>9],
10=>['id'=>11,'name'=>'儿1-1-1','father'=>4],
11=>['id'=>12,'name'=>'儿2-1-1','father'=>7],
];
function generateTree($arr,$id,$step){
static $tree=[];
foreach($arr as $key=>$val) {
if($val['father'] == $id) {
$flg = str_repeat('└―',$step);
$val[$val['id']] = $flg.$val['name'];
$tree[] = $val;
generateTree($arr , $val['id'] ,$step+1);
}
}
return $tree;
}
$tree = generateTree($arr,0,0);
foreach ($tree as $val){
$new[] = $val['name'].'<br>';
}
print_r($new);
preferences:
37.82 ms | 402 KiB | 5 Q