PHP二维数组相同数据格式做合并，并根据数值字段做排序操作

　　/**
     * 二维数组相同数据格式做合并，并根据字段做排序操作
     *  打印，$json_arr1  OR $json_arr2 ，看数据结构
     * @return array
     */

　　　　 $json_1 = '[{"months":"2017\u5e7407\u6708\u8d26\u5355","t_months":"2017-07","moneys":"1539.43","balances":"Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y"},{"months":"2017\u5e7408\u6708\u8d26\u5355","t_months":"2017-08","moneys":"598.00","balances":"Y,Y"},{"months":"2017\u5e7411\u6708\u8d26\u5355","t_months":"2017-11","moneys":"62.74","balances":"Y"}]';
        $json_2 = '[{"months":"2017\u5e7408\u6708\u8d26\u5355","t_months":"2017-08","moneys2":"23473.09","balances":"N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N"},{"months":"2017\u5e7409\u6708\u8d26\u5355","t_months":"2017-09","moneys2":"8614.42","balances":"N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N"},{"months":"2017\u5e7410\u6708\u8d26\u5355","t_months":"2017-10","moneys2":"8455.06","balances":"N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N"},{"months":"2017\u5e7411\u6708\u8d26\u5355","t_months":"2017-11","moneys2":"86.85","balances":"N,N"}]';

        $json_arr1 = json_decode($json_1, true);
        $json_arr2 = json_decode($json_2, true);

        $data_1 = [];
        $data_2 = [];

        //todo : 数量小的months做key
        $replace_data = count($json_arr1) < count($json_arr2) ? $json_arr1 : $json_arr2;
        foreach ($replace_data as $k=>$a) {
            $data_1[$a['months']] = $a;
        }
        //todo: 数组合并，并根据根据key循环做存已存在和未存，数据重组操作
        foreach (array_merge($json_arr1,$json_arr2) as $ks => $b) {
            unset($b['balances']);
            $data_2[$b['months']]  = $b;
            isset($data_1[$b['months']]) and $data_2[$b['months']] = [
                'months'  => $b['months'],
                't_months'=> $b['t_months'],
                'moneys'  => !empty($data_1[$b['months']]['moneys']) ? $data_1[$b['months']]['moneys'] : 0,
                'moneys2' => !empty($b['moneys2']) ? $b['moneys2'] : 0,
            ];
        }

        //todo： 二维数组根据某个字段做排序操作(只限制数值)
        $data_arr = array_values($data_2);
        $arr_sort = [];
        foreach($data_arr as $kr => $value){
            foreach($value as $k=>$v){
                $arr_sort[$k][$kr] = $v;
            }
        }
        array_multisort($arr_sort['t_months'], SORT_ASC, $data_arr);
        print_r($data_arr);