php数组键值排序

 代码片段如下：      
  $data = $villageDb->alias('a')->join('br_esf_village_expand as b on a.villageId=b.villageId', 'LEFT')->where($where)->limit($Page->firstRow . ',' . $Page->listRows)->select();
        $houseDb=D("House");
        foreach($data as $key => $val){
            $quyuname = '';
            if ($val['fangAreaId']) {
                $quyuname = $areaDb->getAreaName($val['fangAreaId']);
            }
            $shangquanname = '';
            if ($val['fangTradingId']) {
                $shangquanname = $areaDb->getShangName($val['fangTradingId']);
            }
            $data[$key]['quyuname'] = $quyuname;
            $data[$key]['shangquanname'] = $shangquanname;
            $data[$key]['ispublish']=$houseDb->ishouseCount($val['villageId']);
            $data[$key]['nopublish']=$houseDb->nohouseCount($val['villageId']);
        }
        $d=$this->multi_array_sort($data, 'ispublish'); //键值ispublish排序
        
            $this->changename($fangareaId); //传值
            $this->assign('quyu', $quyu)    //得到区域          
                ->assign('sqData', $this->changename($fangareaId))    //搜索赋值商圈
                ->assign('data', $d); // 得到商圈
            $this->display(); 
    }
    //二维数组键值排序
    function multi_array_sort($multi_array, $sort_key, $sort = SORT_DESC) {
            if (is_array($multi_array)) {
                 foreach ($multi_array as $row_array) {
                 if (is_array($row_array)) {
                 $key_array[] = $row_array[$sort_key];
                 } else {
                    return FALSE;
                 }
                }
                } else {
                return FALSE;
                }
                array_multisort($key_array, $sort, $multi_array);
                return $multi_array;
                }