php数组根据某一字段去重排序

野性酷女 2022-04-23 02:04 313阅读 0赞

原数组

"user_browserLog": [
                {
                    "id": 22,
                    "shop_id": null,
                    "from_user_id": 36,
                    "user_id": 12,
                    "modified_time": "2019-01-23 09:12:42",
                    "logdate": "2019-01-23",
                    "name": " ",
                    "avatar": null
                },
                {
                    "id": 21,
                    "shop_id": null,
                    "from_user_id": 36,
                    "user_id": 12,
                    "modified_time": "2019-01-22 18:30:42",
                    "logdate": "2019-01-22",
                    "name": " ",
                    "avatar": null
                },
                {
                    "id": 20,
                    "shop_id": null,
                    "from_user_id": 36,
                    "user_id": 12,
                    "modified_time": "2019-01-17 14:09:47",
                    "logdate": "2019-01-17",
                    "name": " ",
                    "avatar": null
                },
                {
                    "id": 19,
                    "shop_id": null,
                    "from_user_id": 2390,
                    "user_id": 12,
                    "modified_time": "2019-01-08 14:15:14",
                    "logdate": "2019-01-08",
                    "name": "Choomia",
                    "avatar": "https://wx.qlogo.cn/mmopen/vi_32/sFaGVGClJrd9LbfESCU4CftibRbicS4UUntS8zyG2mmZBTHd1nd7nwQ5ynBpUjC8Pbds5sLKr4k5SI0upSXibibvlA/132"
                },
                {
                    "id": 17,
                    "shop_id": null,
                    "from_user_id": 23,
                    "user_id": 12,
                    "modified_time": "2018-12-27 12:49:42",
                    "logdate": "2018-12-27",
                    "name": null,
                    "avatar": null
                },
                {
                    "id": 13,
                    "shop_id": null,
                    "from_user_id": 2007,
                    "user_id": 12,
                    "modified_time": "2018-12-27 12:44:49",
                    "logdate": "2018-12-27",
                    "name": "",
                    "avatar": null
                },
                {
                    "id": 12,
                    "shop_id": null,
                    "from_user_id": 2007,
                    "user_id": 12,
                    "modified_time": "2018-12-26 16:42:02",
                    "logdate": "2018-12-26",
                    "name": "",
                    "avatar": null
                },
                {
                    "id": 8,
                    "shop_id": null,
                    "from_user_id": 2390,
                    "user_id": 12,
                    "modified_time": "2018-12-26 15:43:57",
                    "logdate": "2018-12-26",
                    "name": "Choomia",
                    "avatar": "https://wx.qlogo.cn/mmopen/vi_32/sFaGVGClJrd9LbfESCU4CftibRbicS4UUntS8zyG2mmZBTHd1nd7nwQ5ynBpUjC8Pbds5sLKr4k5SI0upSXibibvlA/132"
                },
                {
                    "id": 3,
                    "shop_id": null,
                    "from_user_id": 23,
                    "user_id": 12,
                    "modified_time": "2018-12-25 15:21:41",
                    "logdate": "2018-12-25",
                    "name": null,
                    "avatar": null
                }
            ],

方法

##根据某一字段去重
        public function sort($data){
    
            $data = array_reverse($data);
            $newData = [];
            foreach($data as $k=>$v){
                if(!isset($newdata[$v['from_user_id']])){
                    $newData[$v['from_user_id']] = $v;
                }
            }
    
            $newData = array_values($newData);
    
            $key = array_column($newData,'id');
    
            $new = array_multisort($key,SORT_DESC,$newData);
            return $newData;
        }

处理之后