使用phpexcel导出到xls文件的时候出现乱码解决

<?phpinclude 'global.php';$ids = $_GET['ids'];$sql = "select * from crm_cost_end where id in ( {$ids} )";$result = $db->findAll($sql);//echo $result[1]['sn'];//创建一个excel对象$objPHPExcel = new PHPExcel();// Set properties  $objPHPExcel->getProperties()->setCreator("ctos")        ->setLastModifiedBy("ctos")        ->setTitle("Office 2007 XLSX Test Document")        ->setSubject("Office 2007 XLSX Test Document")        ->setDescription("Test document for Office 2007 XLSX, generated using PHP classes.")        ->setKeywords("office 2007 openxml php")        ->setCategory("Test result file");//set width  $objPHPExcel->getActiveSheet()->getColumnDimension('A')->setWidth(8);$objPHPExcel->getActiveSheet()->getColumnDimension('B')->setWidth(10);$objPHPExcel->getActiveSheet()->getColumnDimension('C')->setWidth(25);$objPHPExcel->getActiveSheet()->getColumnDimension('D')->setWidth(12);$objPHPExcel->getActiveSheet()->getColumnDimension('E')->setWidth(50);$objPHPExcel->getActiveSheet()->getColumnDimension('F')->setWidth(10);$objPHPExcel->getActiveSheet()->getColumnDimension('G')->setWidth(12);$objPHPExcel->getActiveSheet()->getColumnDimension('H')->setWidth(12);$objPHPExcel->getActiveSheet()->getColumnDimension('I')->setWidth(12);$objPHPExcel->getActiveSheet()->getColumnDimension('J')->setWidth(30);//设置行高度  $objPHPExcel->getActiveSheet()->getRowDimension('1')->setRowHeight(22);$objPHPExcel->getActiveSheet()->getRowDimension('2')->setRowHeight(20);//set font size bold  $objPHPExcel->getActiveSheet()->getDefaultStyle()->getFont()->setSize(10);$objPHPExcel->getActiveSheet()->getStyle('A2:J2')->getFont()->setBold(true);$objPHPExcel->getActiveSheet()->getStyle('A2:J2')->getAlignment()->setVertical(PHPExcel_Style_Alignment::VERTICAL_CENTER);$objPHPExcel->getActiveSheet()->getStyle('A2:J2')->getBorders()->getAllBorders()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);//设置水平居中  $objPHPExcel->getActiveSheet()->getStyle('A1')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_LEFT);$objPHPExcel->getActiveSheet()->getStyle('A')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);$objPHPExcel->getActiveSheet()->getStyle('B')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);$objPHPExcel->getActiveSheet()->getStyle('D')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);$objPHPExcel->getActiveSheet()->getStyle('F')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);$objPHPExcel->getActiveSheet()->getStyle('G')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);$objPHPExcel->getActiveSheet()->getStyle('H')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);$objPHPExcel->getActiveSheet()->getStyle('I')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);//  $objPHPExcel->getActiveSheet()->mergeCells('A1:J1');// set table header content  $objPHPExcel->setActiveSheetIndex(0)        ->setCellValue('A1', '订单数据汇总  时间:' . date('Y-m-d H:i:s'))        ->setCellValue('A2', '订单ID')        ->setCellValue('B2', '下单人')        ->setCellValue('C2', '客户名称')        ->setCellValue('D2', '下单时间')        ->setCellValue('E2', '需求机型')        ->setCellValue('F2', '需求数量')        ->setCellValue('G2', '需求交期')        ->setCellValue('H2', '确认BOM料号')        ->setCellValue('I2', 'PMC确认交期')        ->setCellValue('J2', 'PMC交货备注');// Miscellaneous glyphs, UTF-8  for ($i = 0; $i < count($result) - 1; $i++) {    $objPHPExcel->getActiveSheet(0)->setCellValue('A' . ($i + 3), $result[$i]['id']);    $objPHPExcel->getActiveSheet(0)->setCellValue('B' . ($i + 3), $result[$i]['realname']);    $objPHPExcel->getActiveSheet(0)->setCellValue('C' . ($i + 3), $result[$i]['customer_name']);    $objPHPExcel->getActiveSheet(0)->setCellValue('D' . ($i + 3), $OrdersData[$i]['create_time']);    $objPHPExcel->getActiveSheet(0)->setCellValue('E' . ($i + 3), $result[$i]['require_product']);    $objPHPExcel->getActiveSheet(0)->setCellValue('F' . ($i + 3), $result[$i]['require_count']);    $objPHPExcel->getActiveSheet(0)->setCellValue('G' . ($i + 3), $result[$i]['require_time']);    $objPHPExcel->getActiveSheet(0)->setCellValue('H' . ($i + 3), $result[$i]['product_bom_encoding']);    $objPHPExcel->getActiveSheet(0)->setCellValue('I' . ($i + 3), $result[$i]['delivery_time']);    $objPHPExcel->getActiveSheet(0)->setCellValue('J' . ($i + 3), $result[$i]['delivery_memo']);    $objPHPExcel->getActiveSheet()->getStyle('A' . ($i + 3) . ':J' . ($i + 3))->getAlignment()->setVertical(PHPExcel_Style_Alignment::VERTICAL_CENTER);    $objPHPExcel->getActiveSheet()->getStyle('A' . ($i + 3) . ':J' . ($i + 3))->getBorders()->getAllBorders()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);    $objPHPExcel->getActiveSheet()->getRowDimension($i + 3)->setRowHeight(16);}// Rename sheet  $objPHPExcel->getActiveSheet()->setTitle('订单汇总表');// Set active sheet index to the first sheet, so Excel opens this as the first sheet  $objPHPExcel->setActiveSheetIndex(0);// Redirect output to a client’s web browser (Excel5)  ob_end_clean();//清除缓冲区,避免乱码header('Content-Type: application/vnd.ms-excel');header('Content-Disposition: attachment;filename="订单汇总表(' . date('Ymd-His') . ').xls"');header('Cache-Control: max-age=0');$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');$objWriter->save('php://output');?>