php递归实现无限级分类树

1.首先查出所有数据

 就不列出查询过程。展示数据类型：

2.

$data = sele_chil($results,0);
function sele_chil($results, $pId){
$tree = '';
foreach($results as $k => $v){
  if($v['PARENTID'] == $pId){
   $v['children'] = sele_chil($results, $v['CHANNELID']);
   $tree[] = $v;
   unset($results[$k]);
  }
}
return $tree;
}

echo "<pre>";
print_r($data);

echo "</pre>"

 

打印结果为：