PHPExcel export data to excel

public function excel() {  
  
    $data = $this->getExamInfo();  
  
    // 所教学科id  
    $subject = D('Exam')->getTeacherInfo($this->authInfo);  
    $list = M('Score')->where(array('acp_id' => intval($_GET['id'])))->order('sc_rank ASC')->select();  
    $auth = getDataByArray('Auth', $list, 'a_id', 'a_id,a_nickname');  
  
    foreach ($list as &$value) {  
        $value['a_nickname'] = $auth[$value['a_id']]['a_nickname'];  
    }  
  
    import('@.ORG.PHPExcel.PHPExcel');  
  
    // Create new PHPExcel object    
    $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(20);  
    $objPHPExcel->getActiveSheet()->getColumnDimension('B')->setWidth(20);  
    $objPHPExcel->getActiveSheet()->getColumnDimension('C')->setWidth(20);  
    $objPHPExcel->getActiveSheet()->getColumnDimension('D')->setWidth(20);  
  
    // 设置行高度    
    $objPHPExcel->getActiveSheet()->getRowDimension('1')->setRowHeight(22);  
  
    $objPHPExcel->getActiveSheet()->getRowDimension('2')->setRowHeight(20);  
  
    // 字体和样式  
    $objPHPExcel->getActiveSheet()->getDefaultStyle()->getFont()->setSize(10);  
    $objPHPExcel->getActiveSheet()->getStyle('A2:D2')->getFont()->setBold(true);  
    $objPHPExcel->getActiveSheet()->getStyle('A1')->getFont()->setBold(true);  
  
    $objPHPExcel->getActiveSheet()->getStyle('A2:D2')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);  
    $objPHPExcel->getActiveSheet()->getStyle('A2:D2')->getBorders()->getAllBorders()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);  
  
    // 设置水平居中    
    $objPHPExcel->getActiveSheet()->getStyle('A1')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);  
    $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('C')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);  
    $objPHPExcel->getActiveSheet()->getStyle('D')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);  
  
    //  合并  
    $objPHPExcel->getActiveSheet()->mergeCells('A1:D1');  
  
    // 表头  
    $objPHPExcel->setActiveSheetIndex(0)  
            ->setCellValue('A1', $data['examTitle'])  
            ->setCellValue('A2', '序号')  
            ->setCellValue('B2', '姓名')  
            ->setCellValue('C2', '班级')  
            ->setCellValue('D2', '成绩');  
  
    // 内容  
    for ($i = 0, $len = count($list); $i < $len; $i++) {  
        $objPHPExcel->getActiveSheet(0)->setCellValue('A' . ($i + 3), $list[$i]['sc_rank']);  
        $objPHPExcel->getActiveSheet(0)->setCellValue('B' . ($i + 3), $list[$i]['a_nickname']);  
        $objPHPExcel->getActiveSheet(0)->setCellValue('C' . ($i + 3), $data['title']);  
        $objPHPExcel->getActiveSheet(0)->setCellValue('D' . ($i + 3), $list[$i]['sc_point']);  
        $objPHPExcel->getActiveSheet()->getStyle('A' . ($i + 3) . ':D' . ($i + 3))->getAlignment()->setVertical(PHPExcel_Style_Alignment::VERTICAL_CENTER);  
        $objPHPExcel->getActiveSheet()->getStyle('A' . ($i + 3) . ':D' . ($i + 3))->getBorders()->getAllBorders()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);  
        $objPHPExcel->getActiveSheet()->getRowDimension($i + 3)->setRowHeight(16);  
    }  
  
    // Rename sheet    
    $objPHPExcel->getActiveSheet()->setTitle($data['examTitle']);  
  
    // Set active sheet index to the first sheet, so Excel opens this as the first sheet    
    $objPHPExcel->setActiveSheetIndex(0);  
  
    // 输出  
    header('Content-Type: application/vnd.ms-excel');  
    header('Content-Disposition: attachment;filename="' . $data['examTitle'] . '.xls"');  
    header('Cache-Control: max-age=0');  
  
    $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');  
    $objWriter->save('php://output');  
}

The above introduces PHPExcel to export data to excel, including aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.