excel导入时间格式
$res_arr[$row-2]['Delivery_Date_Expected'] =date('Y-m-d H:i',strtotime(gmdate('Y-m-d H:i',\PHPExcel_Shared_Date::ExcelToPHP($sheet->getCell("O".$row)->getValue()))));
$res_arr[$row-2]['Delivery_Date_Expected'] =date('Y-m-d H:i',strtotime(gmdate('Y-m-d H:i',\PHPExcel_Shared_Date::ExcelToPHP($sheet->getCell("O".$row)->getValue()))));