CodeIgniter+PHPExcel 导出数据为Excel文件

下载安装PHPExcel库

下载PHPExcel：http://phpexcel.codeplex.com

安装PHPExcel非常的简单，只需解压压缩包里的Classes文件夹中的内容到application\libraries\目录下即可，最终的目录结构如下：

– application\libraries\PHPExcel.php

– application\libraries\PHPExcel (文件夹)

但是由于CI的命名规则的约束，需要修改PHPExcel库中的类名以遵从CI中的类命名规则。打开application\libraries\PHPExcel\IOFactory.php 文件，将其类名从PHPExcel_IOFactory改为IOFactory，并将其构造函数改为public类型。

至此，PHPExcel库安装完毕。

使用PHPExcel库生成excel文件

在CI中写一个Controller实现导出功能

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publicfunction export() { $this->load->model("CourseInfo","CourseInfo",TRUE); $result=$this->CourseInfo->countCourseStuNumber(); // 清空输出缓冲区 ob_clean(); // 载入PHPExcel类库 $this->load->library('PHPExcel'); $this->load->library('PHPExcel/IOFactory'); // 创建PHPExcel对象 $objPHPExcel=new PHPExcel(); // 设置excel文件属性描述 $objPHPExcel->getProperties() ->setTitle("选课统计表") ->setDescription("选课统计表"); // 设置当前工作表 $objPHPExcel->setActiveSheetIndex(0); // 设置表头 $fields=array('节次','课程名称','开课老师','选课学生数'); // 列编号从0开始，行编号从1开始 $col=0; $row=1; foreach($fieldsas$field) { $objPHPExcel->getActiveSheet()->setCellValueByColumnAndRow($col,$row,$field); $col++; } // 从第二行开始输出数据内容 $row=2; foreach($resultas$course) { $objPHPExcel->getActiveSheet()->setCellValueByColumnAndRow(0,$row,$course["courseOrder"]); $objPHPExcel->getActiveSheet()->setCellValueByColumnAndRow(1,$row,$course["courseName"]); $objPHPExcel->getActiveSheet()->setCellValueByColumnAndRow(2,$row,$course["teacher"]); $objPHPExcel->getActiveSheet()->setCellValueByColumnAndRow(3,$row,$course["stuCount"]); $row++; } //输出excel文件 $objPHPExcel->setActiveSheetIndex(0); // 第二个参数可取值：CSV、Excel5(生成97-2003版的excel)、Excel2007(生成2007版excel) $objWriter= IOFactory::createWriter($objPHPExcel,'Excel5'); // 设置HTTP头 header('Content-Type: application/vnd.ms-excel; charset=utf-8'); header('Content-Disposition: attachment;filename="'.mb_convert_encoding("选课统计表","GB2312","UTF-8").'.xls"'); header('Cache-Control: max-age=0'); $objWriter->save('php://output'); }

注意事项

1 2	// 清空输出缓冲区 ob_clean();

我翻看了网上许多例子，当中都是没有这句话的，但是如果不加这句话，生成的Excel文件很有可能是乱码文件，打开时提示的是文件格式无效。一开始我以为是编码问题，但是即使我将MySQL，CI，HTML页面，HTTP头信息等等所有相关的东西的编码都统一为UTF-8或GBK或GB2312，内容也都用iconv转码，还是一如既往的出现乱码，后来搞得我头都大了，一气之下生成一个空的没有任何内容的Excel文件，打开一看还是乱码，我才知道不是编码的问题。最后经过多方的查找，才知道是PHPExcel输出Excel文件时是将整个缓冲区中的内容写入到Excel文件，而此时如果缓冲区中在Excel文件之前还有其它内容，则会一起写入到Excel文件当中，导致Excel文件头中包含脏数据，故而打开时提示文件格式无效。所以切记，在生成Excel文件前，一定记得先清空一下输出缓冲区！！！

更多应用

PHPExcel是个强大的类库，它所能做的不仅仅只有这些，更多的功能可以查看PHPExcel官方的文档，在这里我列出了一些常用的设置选项。

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//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 $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); //设置单元格边框 $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); //设置边框颜色 $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()); //在默认sheet后，创建一个worksheet $objPHPExcel->createSheet();

http://www.freebluer.net/export-data-in-codeigniter-to-excel-with-phpexcel.html希望对大家有所帮助。

以上！