二维数组相同数组的字段 合并

array(10) {  [0]=>  array(5) {    ["times"]=>    string(10) "2016-10-26"    ["aid"]=>    string(1) "1"    ["uid"]=>    string(1) "2"    ["id"]=>    string(1) "2"    ["username"]=>    string(6) "李四"  }  [1]=>  array(5) {    ["times"]=>    string(10) "2016-10-26"    ["aid"]=>    string(1) "1"    ["uid"]=>    string(1) "6"    ["id"]=>    string(1) "6"    ["username"]=>    string(6) "小辉"  }  [2]=>  array(5) {    ["times"]=>    string(10) "2016-10-25"    ["aid"]=>    string(1) "1"    ["uid"]=>    string(1) "7"    ["id"]=>    string(1) "7"    ["username"]=>    string(6) "小明"  }  [3]=>  array(5) {    ["times"]=>    string(10) "2016-10-26"    ["aid"]=>    string(1) "1"    ["uid"]=>    string(1) "6"    ["id"]=>    string(1) "6"    ["username"]=>    string(6) "小辉"  }  [4]=>  array(5) {    ["times"]=>    string(10) "2016-10-24"    ["aid"]=>    string(1) "1"    ["uid"]=>    string(1) "8"    ["id"]=>    string(1) "8"    ["username"]=>    string(6) "小飞"  }  [5]=>  array(5) {    ["times"]=>    string(10) "2016-10-24"    ["aid"]=>    string(1) "1"    ["uid"]=>    string(2) "12"    ["id"]=>    NULL    ["username"]=>    NULL  }  [6]=>  array(5) {    ["times"]=>    string(10) "2016-10-23"    ["aid"]=>    string(1) "1"    ["uid"]=>    string(2) "11"    ["id"]=>    string(2) "11"    ["username"]=>    string(6) "小小"  }  [7]=>  array(5) {    ["times"]=>    string(10) "2016-10-26"    ["aid"]=>    string(1) "1"    ["uid"]=>    string(2) "14"    ["id"]=>    string(2) "14"    ["username"]=>    string(6) "小六"  }  [8]=>  array(5) {    ["times"]=>    string(10) "2016-10-25"    ["aid"]=>    string(1) "1"    ["uid"]=>    string(1) "2"    ["id"]=>    string(1) "2"    ["username"]=>    string(6) "李四"  }  [9]=>  array(5) {    ["times"]=>    string(10) "2016-10-26"    ["aid"]=>    string(1) "1"    ["uid"]=>    string(1) "2"    ["id"]=>    string(1) "2"    ["username"]=>    string(6) "李四"  }} 
       //通过那个字段合并的 这里我是通过times  把我要的username及id合并
       $res = array();
        foreach($ar as $item) {
          if(! isset($res[$item["times"]])) {
              $res[$item["times"]] = $item;
           } else{
               $res[$item["times"]]["username"].= "," . $item["username"];
               $res[$item["times"]]["uid"].= "," . $item["uid"];
           }
        }
        $res=array_values($res);
         //把username，uid数据分割开
          $data=$res;
          foreach($res as $key=>$val){
                  $res[$key]["username"]=explode(",",$val["username"]);
                  $res[$key]["uid"]=explode(",",$val["uid"]);
          }
        //把username，uid；重复的值去除掉
         $obj=array();
          foreach($res as $key=>$val){
               $obj[$key]["username"]=array_unique($val["username"]);
               $obj[$key]["uid"]=array_unique($val["uid"]);
          }
        //然后放到我们原先的数组内
           $da=array();
          foreach($data as $k=>$v){
                $da[$k]=$v;
                $da[$k]["users"]=implode(",",$obj[$k]["username"]);
                $da[$k]["uid"]=implode(",",$obj[$k]["uid"]);
            
          }

         这就像咱们最后想要的数据。

 最后 ，到我们的视图层循环展示