我有一個現有的數據數組，其格式如下：Array ( [0] => Array ( [employee_id] => 14100001 [salary] => 346.35416666667 [late_duration] => 2 [undertime_duration] => 3 [cola_duration] => 0 [date] => 2019-09-09 )     [1] => Array ( [employee_id] => 14100001 [salary] => 350 [late_duration] => 0 [undertime_duration] => 0 [cola_duration] => 0 [date] => 2019-09-10 )     [2] => Array ( [employee_id] => 14100002 [salary] => 350 [late_duration] => 0 [undertime_duration] => 0 [cola_duration] => 0 [date] => 2019-09-09 )     [3] => Array ( [employee_id] => 14100003 [salary] => 358.75 [late_duration] => 0 [undertime_duration] => 0 [cola_duration] => 2 [date] => 2019-09-09 )現在我想在我現有的數組中插入一個數據，如下所示：Array ( [0] => Array ( [employee_id] => 14100001 [salary] => 346.35416666667 [late_duration] => 2 [undertime_duration] => 3 [cola_duration] => 0 [date] => 2019-09-09 [calculate_id] => 1 )[1] => Array ( [employee_id] => 14100001 [salary] => 350 [late_duration] => 0 [undertime_duration] => 0 [cola_duration] => 0 [date] => 2019-09-10 [calculate_id] => 1 )[2] => Array ( [employee_id] => 14100002 [salary] => 350 [late_duration] => 0 [undertime_duration] => 0 [cola_duration] => 0 [date] => 2019-09-09 [calculate_id] => 1 )[3] => Array ( [employee_id] => 14100003 [salary] => 358.75 [late_duration] => 0 [undertime_duration] => 0 [cola_duration] => 2 [date] => 2019-09-09 [calculate_id] => 1 )這是我的代碼，它返回錯誤：嘗試分配'calculate_id'非對象的屬性$calculate = $this->payroll->record_calculate_date($start_date,$end_date);            foreach ($this->data_array as $key => $value) {                array_push($this->data_array , $this->data_array->calculate_id = $calculate);            }            foreach ($$this->data_array1 as $key => $value) {                array_push($this->data_array , $this->data_array->calculate_id = $calculate);            }