CI框架整合PHPExcel方法

整合方法
1： 下载 PHPExcel -1.8
2：将下载完成的 Classes中的PHPExcel 文件夹 和 PHPexcel.php 文件放在项目中的 libraries 里面；
3：修改application/libraries/PHPExcel/IOFactory.php文件：将其类名从PHPExcel_IOFactory改为IOFactory，遵从CI类命名规则；
PHPExcel_IOFactory -->Class IOFactory
4：将 Iofactory 类里的构造函数改为public；
private function __construct()–>public function __construct()

在自己的项目控制器里写方法
导出以下数据表的数据
数据库中的表

控制器中的方法

public function testPHPExcel(){
    	/*获取数据库数据*/
    	$xuexiao = $this->db->get('xuexiao')->result_array();
        //加载PHPExcel的类
        $this->load->library('PHPExcel');
        $this->load->library('PHPExcel/IOFactory');
        //创建PHPExcel实例
        $excel = new PHPExcel();
        //下面介绍项目中用到的几个关于excel的操作
        $charActors = array('A', 'B', 'C');	//用到的列
        $widthSize = array(5, 5, 30);	//列宽
        $titleName = array('序号', '编号', '学校名称');
        //写入表头
        foreach ($charActors as $k => $v) {
            //对齐方式，水平居中
            $excel->getActiveSheet()->getStyle($v)->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
            //设置表格宽度
            $excel->getActiveSheet()->getColumnDimension($v)->setWidth($widthSize[$k]);
            //设置单元格为文本
            $excel->getActiveSheet()->getStyle($v)->getNumberFormat()->setFormatCode(PHPExcel_Style_NumberFormat::FORMAT_TEXT);
            //为单元格赋值
            $excel->getActiveSheet()->setCellValue($v . 1, $titleName[$k]);
        }

        $hangshu = 2;//从第二行开始写入数据    行数
        $i=1;	//序号
        foreach ($xuexiao as $vxx) {
        	$excel->getActiveSheet()->setCellValue('A' . $hangshu, $i);
            $excel->getActiveSheet()->setCellValue('B' . $hangshu, $vxx['xNum']);
            $excel->getActiveSheet()->setCellValue('C' . $hangshu, $vxx['xName']);
            $i++;
            $hangshu++;
        }

        //输出
        $write = new PHPExcel_Writer_Excel2007($excel);
        $file_name = date("YmdHis");
        header("Pragma: public");
        header("Expires: 0");
        header("Cache-Control:must-revalidate, post-check=0, pre-check=0");
        header("Content-Type:application/force-download");
        header("Content-Type:application/vnd.ms-execl");
        header("Content-Type:application/octet-stream");
        header("Content-Type:application/download");
        header('Content-Disposition:attachment;filename="' . $file_name . '.xlsx"');
        header("Content-Transfer-Encoding:binary");
        $write->save('php://output');
    }

输出excel结果

至此，完成！

附加phpexcel各种操作

//设置excel的属性：
//创建人
$objPHPExcel->getProperties()->setCreator("Maarten Balliauw");
//最后修改人
$objPHPExcel->getProperties()->setLastModifiedBy("Maarten Balliauw");
//标题
$objPHPExcel->getProperties()->setTitle("Office 2007 XLSX Test Document");
//题目
$objPHPExcel->getProperties()->setSubject("Office 2007 XLSX Test Document");
//描述
$objPHPExcel->getProperties()->setDescription("Test document for Office 2007 XLSX, generated using PHP classes.");
//关键字
$objPHPExcel->getProperties()->setKeywords("office 2007 openxml php");
//种类
$objPHPExcel->getProperties()->setCategory("Test result file");
//设置当前的sheet
$objPHPExcel->setActiveSheetIndex(0);
//设置sheet的name
$objPHPExcel->getActiveSheet()->setTitle('Simple');
//设置单元格的值
$objPHPExcel->getActiveSheet()->setCellValue('A1', 'String');
$objPHPExcel->getActiveSheet()->setCellValue('A2', 12);
$objPHPExcel->getActiveSheet()->setCellValue('A3', true);
$objPHPExcel->getActiveSheet()->setCellValue('C5', '=SUM(C2:C4)');
$objPHPExcel->getActiveSheet()->setCellValue('B8', '=MIN(B2:C5)');
//合并单元格
$objPHPExcel->getActiveSheet()->mergeCells('A18:E22');
//分离单元格
$objPHPExcel->getActiveSheet()->unmergeCells('A28:B28');
//保护cell
$objPHPExcel->getActiveSheet()->getProtection()->setSheet(true); // Needs to be set to true in order to enable any worksheet protection!
$objPHPExcel->getActiveSheet()->protectCells('A3:E13', 'PHPExcel');
//设置格式
// Set cell number formats
echo date('H:i:s') . " Set cell number formats\n";
$objPHPExcel->getActiveSheet()->getStyle('E4')->getNumberFormat()->setFormatCode(PHPExcel_Style_NumberFormat::FORMAT_CURRENCY_EUR_SIMPLE);
$objPHPExcel->getActiveSheet()->duplicateStyle($objPHPExcel->getActiveSheet()->getStyle('E4'), 'E5:E13');
//设置宽width
// Set column widths
$objPHPExcel->getActiveSheet()->getColumnDimension('B')->setAutoSize(true);
$objPHPExcel->getActiveSheet()->getColumnDimension('D')->setWidth(12);
//设置font
$objPHPExcel->getActiveSheet()->getStyle('B1')->getFont()->setName('Candara');
$objPHPExcel->getActiveSheet()->getStyle('B1')->getFont()->setSize(20);
$objPHPExcel->getActiveSheet()->getStyle('B1')->getFont()->setBold(true);
$objPHPExcel->getActiveSheet()->getStyle('B1')->getFont()->setUnderline(PHPExcel_Style_Font::UNDERLINE_SINGLE);
$objPHPExcel->getActiveSheet()->getStyle('B1')->getFont()->getColor()->setARGB(PHPExcel_Style_Color::COLOR_WHITE);
$objPHPExcel->getActiveSheet()->getStyle('E1')->getFont()->getColor()->setARGB(PHPExcel_Style_Color::COLOR_WHITE);
$objPHPExcel->getActiveSheet()->getStyle('D13')->getFont()->setBold(true);
$objPHPExcel->getActiveSheet()->getStyle('E13')->getFont()->setBold(true);
//设置align
$objPHPExcel->getActiveSheet()->getStyle('D11')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_RIGHT);
$objPHPExcel->getActiveSheet()->getStyle('D12')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_RIGHT);
$objPHPExcel->getActiveSheet()->getStyle('D13')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_RIGHT);
$objPHPExcel->getActiveSheet()->getStyle('A18')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_JUSTIFY);
//垂直居中
$objPHPExcel->getActiveSheet()->getStyle('A18')->getAlignment()->setVertical(PHPExcel_Style_Alignment::VERTICAL_CENTER);
//设置column的border
$objPHPExcel->getActiveSheet()->getStyle('A4')->getBorders()->getTop()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
$objPHPExcel->getActiveSheet()->getStyle('B4')->getBorders()->getTop()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
$objPHPExcel->getActiveSheet()->getStyle('C4')->getBorders()->getTop()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
$objPHPExcel->getActiveSheet()->getStyle('D4')->getBorders()->getTop()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
$objPHPExcel->getActiveSheet()->getStyle('E4')->getBorders()->getTop()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
//设置border的color
$objPHPExcel->getActiveSheet()->getStyle('D13')->getBorders()->getLeft()->getColor()->setARGB('FF993300');
$objPHPExcel->getActiveSheet()->getStyle('D13')->getBorders()->getTop()->getColor()->setARGB('FF993300');
$objPHPExcel->getActiveSheet()->getStyle('D13')->getBorders()->getBottom()->getColor()->setARGB('FF993300');
$objPHPExcel->getActiveSheet()->getStyle('E13')->getBorders()->getTop()->getColor()->setARGB('FF993300');
$objPHPExcel->getActiveSheet()->getStyle('E13')->getBorders()->getBottom()->getColor()->setARGB('FF993300');
$objPHPExcel->getActiveSheet()->getStyle('E13')->getBorders()->getRight()->getColor()->setARGB('FF993300');
//设置填充颜色
$objPHPExcel->getActiveSheet()->getStyle('A1')->getFill()->setFillType(PHPExcel_Style_Fill::FILL_SOLID);
$objPHPExcel->getActiveSheet()->getStyle('A1')->getFill()->getStartColor()->setARGB('FF808080');
$objPHPExcel->getActiveSheet()->getStyle('B1')->getFill()->setFillType(PHPExcel_Style_Fill::FILL_SOLID);
$objPHPExcel->getActiveSheet()->getStyle('B1')->getFill()->getStartColor()->setARGB('FF808080');
//加图片
$objDrawing = new PHPExcel_Worksheet_Drawing();
$objDrawing->setName('Logo');
$objDrawing->setDescription('Logo');
$objDrawing->setPath('./images/officelogo.jpg');
$objDrawing->setHeight(36);
$objDrawing->setWorksheet($objPHPExcel->getActiveSheet());
$objDrawing = new PHPExcel_Worksheet_Drawing();
$objDrawing->setName('Paid');
$objDrawing->setDescription('Paid');
$objDrawing->setPath('./images/paid.png');
$objDrawing->setCoordinates('B15');
$objDrawing->setOffsetX(110);
$objDrawing->setRotation(25);
$objDrawing->getShadow()->setVisible(true);
$objDrawing->getShadow()->setDirection(45);
$objDrawing->setWorksheet($objPHPExcel->getActiveSheet());
//处理中文输出问题
//需要将字符串转化为UTF-8编码，才能正常输出，否则中文字符将输出为空白，如下处理：
 $str = iconv('gb2312', 'utf-8', $str);