1 <?PHP
 2 function eachCategory($cates,$lv=1){
 3     foreach($cates as $v){
 4         echo $v['name'];
 5         echo str_repeat(' >> ',$lv);
 6         if($v['child']){
 7             $this->eachCategory($v['child'],$lv+1);
 8         }
 9     }
10 }
11 
12 function category(&$cates,$pid=0){
13     $tree = array();
14     foreach($cates as $v){
15         if($v['parent_id'] == $pid){
16             $v['child'] = $this->category($cates,$v['cat_id']);
17             $tree[] = $v;
18         }
19     }
20     return $tree;
21 }