下载phpexcel,将phpexcel导入到框架中
在GitHub中下载PHPExcel源代码到本地。https://github.com/PHPOffice/PHPExcel.git
复制PHPExcel\Classes里的文件到thinkphp框架目录:ThinkPHP\Library\Org\Util,将文件PHPExcel.php修改为PHPExcel.class.php,thinkphp框架格式,方便框架引用。如图:

/**
* @param $data 数据,多维数组模式。第一行为标题
$data=array(
['日期','展示量','点击量','价格','ecpm'],
['2018-06-30','10','1','1','100'],
['2018-07-01','20','2','5','500'],
['2018-07-02','1','1','1','100'],
['2018-07-03','3','1','1','100'],
);
* @param $filename 文件名
* @param $SheetTitle sheet名称
*/
public function excel_export($data,$filename="excelfile",$SheetTitle='Sheet1'){
if(empty($data)){
exit("数据为空,导出错误");
}
/*设置文件信息*/
import("ORG.Util.PHPExcel",'','.class.php');
import("ORG.Util.PHPExcel.Reader.Excel2007",'','.php');
$filename=str_replace('.xls', '', $filename).'.xls';
$phpexcel = new \PHPExcel();
$phpexcel->getProperties()
->setCreator("Maarten Balliauw")
->setLastModifiedBy("Maarten Balliauw")
->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");
$phpexcel->getActiveSheet()->fromArray($data);
$phpexcel->getActiveSheet()->setTitle($SheetTitle);
$phpexcel->getActiveSheet()->getStyle("A1:Z1")->getFont()->setName("微软雅黑")->setSize(10)->setBold(true);//设置单元格范围的字体、字体大小、加粗
//$phpexcel->getActiveSheet()->getStyle("A1:Z1")->getFill()->setFillType(\PHPExcel_Style_Fill::FILL_SOLID)->getStartColor()->setARGB('#00FF00');
$phpexcel->setActiveSheetIndex(0);
header('Content-Type: application/vnd.ms-excel');
header("Content-Disposition: attachment;filename=$filename");
header('Cache-Control: max-age=0');
header('Cache-Control: max-age=1');
header ('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); // Date in the past
header ('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT'); // always modified
header ('Cache-Control: cache, must-revalidate'); // HTTP/1.1
header ('Pragma: public'); // HTTP/1.0
$objwriter = \PHPExcel_IOFactory::createWriter($phpexcel, 'Excel5');
$objwriter->save('php://output');
exit;
}传入正确参数,导出excel格式如下图:

图中数据仅为示例,数据未做严谨匹配
如果需要导出的数据只是部分字段,也可以自己设置表头和要导出的字段,代码如下:
//根据excel坐标,添加数据
$phpexcel->setActiveSheetIndex(0)
->setCellValue('A1', 'ID')
->setCellValue('B1', '类型')
->setCellValue('C1', '标题')
->setCellValue('D1', '姓名')
->setCellValue('E1', '联系方式')
->setCellValue('F1', '内容')
->setCellValue('G1', '地区')
->setCellValue('H1', '主办部门')
->setCellValue('I1', '协办部门')
->setCellValue('J1', '审核状态')
->setCellValue('K1', '提问时间')
->setCellValue('L1', '红绿灯')
->setCellValue('M1', '公开状态')
->setCellValue('N1', '点击数')
->setCellValue('O1', '评论数')
->setCellValue('P1', '满意度')
->setCellValue('Q1', '满意度理由');
$i=2;
foreach ($asks as $ask){
$phpexcel->setActiveSheetIndex(0)
->setCellValue('A'.$i, $ask['id'])
->setCellValue('B'.$i, $ask['atypename'])
->setCellValue('C'.$i, $ask['title'])
->setCellValue('D'.$i, $ask['realname'])
->setCellValue('E'.$i, $ask['mobile'])
->setCellValue('F'.$i, $ask['content'])
->setCellValue('G'.$i, $ask['areaname'])
->setCellValue('H'.$i, $ask['departname'])
->setCellValue('I'.$i, $ask['sdepartname'])
->setCellValue('J'.$i, $ask['statusname'])
->setCellValue('K'.$i, $ask['addtime'])
->setCellValue('L'.$i, $ask['lightname'])
->setCellValue('M'.$i, $ask['openname'])
->setCellValue('N'.$i, $ask['hits'])
->setCellValue('O'.$i, $ask['commentnum'])
->setCellValue('P'.$i, $ask['evalname'])
->setCellValue('Q'.$i, $ask['evalremark']);
$i++;
}
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