php 循环去重

<?php
       $where = '  1 GROUP BY `city`';
       $data = Store::getList($where);
       if ($data) {
           $thisgroup = '';
           $k = -1;
           for ($j = 0; $j < count($data); $j++) {
               if ($data[$j]['province'] != $thisgroup) {
                   $k++;
                   $temp1[$k]['id'] = $data[$j]['province'];
                   $temp1[$k]['province'] = Area::Redis_getField($data[$j]['province']);
                   $temp1[$k]['select'] = 0;
                   if ($province_id == $data[$j]['province']) {
                       $temp1[$k]['select'] = 1;
                   }
                   $thisgroup = $data[$j]['province'];
                   $act = "new";
               } else {
                   $act = "merge";
               }

               $select = 0;
               if ($city_id == $data[$j]['city']) {
                   $select = 1;
               }
               if ($act == "new") {
                   $m = 0;
                   $temp1[$k]['data'][$m] = [
                       'id' => $data[$j]['city'],
                       'name' => Area::Redis_getField($data[$j]['city']),
                       'select' => $select
                   ];
                   $m++;
               } else {
                   $temp1[$k]['data'][$m] = [
                       'id' => $data[$j]['city'],
                       'name' => Area::Redis_getField($data[$j]['city']),
                       'select' => $select
                   ];
                   $m++;
               }

               array_push($temp1[$k]['data'], ['id' => 0, 'name' => '全部', 'select' => $city_id == 0 ? 1 : 0]);
           }

           array_push($temp1, ['id' => 0, 'province' => '全部', 'select' => $province_id == 0 ? 1 : 0, 'data' => [['id' => 0, 'name' => '全部', 'select' => $province_id == 0 ? 1 : 0]]]);
           $id = array();
           foreach ($temp1 as $v) {
               $id[] = $v['id'];
           }
           array_multisort($id, SORT_ASC, $temp1);

           foreach ($temp1 as $key => $val){

               $t = $val['data'];
               $cid = array();
               foreach ($t as $v) {
                   $cid[] = $v['id'];
               }
//                array_multisort() 函数返回排序数组。您可以输入一个或多个数组。函数先对第一个数组进行排序，接着是其他数组，如果两个或多个值相同，它将对下一个数组进行排序。

// 注释：字符串键名将被保留，但是数字键名将被重新索引，从 0 开始，并以 1 递增。

// 注释：您可以在每个数组后设置排序顺序和排序类型参数。如果没有设置，每个数组参数会使用默认值。
              array_multisort($cid, SORT_ASC, $t);

               $temp1[$key]['data'] = $t;

           }

       }