public function procCategory($sid,$pid){ $return = array(); $key = 0; static $arr = array(); //分类级别参考数组 $sql =  "select cid,pcid,name from shop_goods_catalog where sid='{$sid}' and pcid = '{$pid}'"; $result = $this->__db->query($sql);   while($row=$this->__db->fetchArray($result)){ $nbsp = ''; if($row['pcid']==0){ $arr = array(); } $arr[] = $row['pcid']; //顶级分类不添加树形结构标识。 if($row['pcid']>0){ //根据分类级别添加树形结构标识 $key = array_search($row['pcid'],$arr); for($i=0;$i<$key;$i++){ $nbsp .= '  '; } //重构分类级别参考数组 if(count($arr)>1&&count(array_keys($arr,$row['pcid']))>1){ $arr = array_slice($arr,0,$key+1); } } $row['name'] = $nbsp.$row['name']; $row['level'] = $key; //分类级别，0为顶级分类，1为二级分类，用于样式设定或其他需求 $return[] = $row; $r = $this->procCategory($sid,$row['cid']); $return = array_merge($return,$r); }   return $return; }