本篇文章主要介绍了Yii2框架中使用PHPExcel导出Excel文件的相关资料,具有一定的参考价值，感兴趣的小伙伴们可以参考一下
最近在研究PHP的Yii框架，很喜欢，碰到导出Excel的问题，研究了一下，就有了下面的方法：
最简单的利用composer安装
composer require "phpoffice/phpexcel": "*"
如果没有安装conposer可以参考下面1.2步
1、引入PHPExcel
首先得要下载phpexcel
你可以直接在入口文件index.php中引入，也可以在你定义的controller类之前，只要是在你使用之前引入就可以
require dirname(dirname(__FILE__)).'/excel/PHPExcel.php';
或者在phpexcel类里修改相应的namespace也可。
2、按照下面的代码修改PHPExcel代码目录里的Autoloader.php文件，对比源文件改成：
public static function Register() {
$functions = spl_autoload_functions();
foreach ( $functions as $function)
spl_autoload_unregister($function);
$functions = array_merge(array(array('PHPExcel_Autoloader','Load')),$functions);
foreach ( $functions as $function)
$x = spl_autoload_register($function);
return $x;
}上面的函数中，注释掉的是原有的代码。
3、下面的代码是输出Excel，以及一些常用的属性设置，在controller中：
public function actionExport()
{
$objectPHPExcel = new PHPExcel();
$objectPHPExcel->setActiveSheetIndex(0);
$page_size = 52;
$model = new NewsSearch();
$dataProvider = $model->search();
$dataProvider->setPagination(false);
$data = $dataProvider->getData();
$count = $dataProvider->getTotalItemCount();
$page_count = (int)($count/$page_size) +1;
$current_page = 0;
$n = 0;
foreach ( $data as $product )
{
if ( $n % $page_size === 0 )
{
$current_page = $current_page +1;
//报表头的输出
$objectPHPExcel->getActiveSheet()->mergeCells('B1:G1');
$objectPHPExcel->getActiveSheet()->setCellValue('B1','产品信息表');
$objectPHPExcel->setActiveSheetIndex(0)->setCellValue('B2','产品信息表');
$objectPHPExcel->setActiveSheetIndex(0)->setCellValue('B2','产品信息表');
$objectPHPExcel->setActiveSheetIndex(0)->getStyle('B1')->getFont()->setSize(24);
$objectPHPExcel->setActiveSheetIndex(0)->getStyle('B1')
->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
$objectPHPExcel->setActiveSheetIndex(0)->setCellValue('B2','日期：'.date("Y年m月j日"));
$objectPHPExcel->setActiveSheetIndex(0)->setCellValue('G2','第'.$current_page.'/'.$page_count.'页');
$objectPHPExcel->setActiveSheetIndex(0)->getStyle('G2')
->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_RIGHT);
//表格头的输出
$objectPHPExcel->getActiveSheet()->getColumnDimension('A')->setWidth(5);
$objectPHPExcel->setActiveSheetIndex(0)->setCellValue('B3','编号');
$objectPHPExcel->getActiveSheet()->getColumnDimension('B')->setWidth(6.5);
$objectPHPExcel->setActiveSheetIndex(0)->setCellValue('C3','名称');
$objectPHPExcel->getActiveSheet()->getColumnDimension('C')->setWidth(17);
$objectPHPExcel->setActiveSheetIndex(0)->setCellValue('D3','生产厂家');
$objectPHPExcel->getActiveSheet()->getColumnDimension('D')->setWidth(22);
$objectPHPExcel->setActiveSheetIndex(0)->setCellValue('E3','单位');
$objectPHPExcel->getActiveSheet()->getColumnDimension('E')->setWidth(15);
$objectPHPExcel->setActiveSheetIndex(0)->setCellValue('F3','单价');
$objectPHPExcel->getActiveSheet()->getColumnDimension('F')->setWidth(15);
$objectPHPExcel->setActiveSheetIndex(0)->setCellValue('G3','在库数');
$objectPHPExcel->getActiveSheet()->getColumnDimension('G')->setWidth(15);
//设置居中
$objectPHPExcel->getActiveSheet()->getStyle('B3:G3')
->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
//设置边框
$objectPHPExcel->getActiveSheet()->getStyle('B3:G3' )
->getBorders()->getTop()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
$objectPHPExcel->getActiveSheet()->getStyle('B3:G3' )
->getBorders()->getLeft()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
$objectPHPExcel->getActiveSheet()->getStyle('B3:G3' )
->getBorders()->getRight()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
$objectPHPExcel->getActiveSheet()->getStyle('B3:G3' )
->getBorders()->getBottom()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
$objectPHPExcel->getActiveSheet()->getStyle('B3:G3' )
->getBorders()->getVertical()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
//设置颜色
$objectPHPExcel->getActiveSheet()->getStyle('B3:G3')->getFill()
->setFillType(PHPExcel_Style_Fill::FILL_SOLID)->getStartColor()->setARGB('FF66CCCC');
}
//明细的输出
$objectPHPExcel->getActiveSheet()->setCellValue('B'.($n+4) ,$product->id);
$objectPHPExcel->getActiveSheet()->setCellValue('C'.($n+4) ,$product->product_name);
$objectPHPExcel->getActiveSheet()->setCellValue('D'.($n+4) ,$product->product_agent->name);
$objectPHPExcel->getActiveSheet()->setCellValue('E'.($n+4) ,$product->unit);
$objectPHPExcel->getActiveSheet()->setCellValue('F'.($n+4) ,$product->unit_price);
$objectPHPExcel->getActiveSheet()->setCellValue('G'.($n+4) ,$product->library_count);
//设置边框
$currentRowNum = $n+4;
$objectPHPExcel->getActiveSheet()->getStyle('B'.($n+4).':G'.$currentRowNum )
->getBorders()->getTop()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
$objectPHPExcel->getActiveSheet()->getStyle('B'.($n+4).':G'.$currentRowNum )
->getBorders()->getLeft()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
$objectPHPExcel->getActiveSheet()->getStyle('B'.($n+4).':G'.$currentRowNum )
->getBorders()->getRight()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
$objectPHPExcel->getActiveSheet()->getStyle('B'.($n+4).':G'.$currentRowNum )
->getBorders()->getBottom()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
$objectPHPExcel->getActiveSheet()->getStyle('B'.($n+4).':G'.$currentRowNum )
->getBorders()->getVertical()->setBorderStyle(PHPExcel_Style_Border::BORDER_THIN);
$n = $n +1;
}
//设置分页显示
//$objectPHPExcel->getActiveSheet()->setBreak( 'I55' , PHPExcel_Worksheet::BREAK_ROW );
//$objectPHPExcel->getActiveSheet()->setBreak( 'I10' , PHPExcel_Worksheet::BREAK_COLUMN );
$objectPHPExcel->getActiveSheet()->getPageSetup()->setHorizontalCentered(true);
$objectPHPExcel->getActiveSheet()->getPageSetup()->setVerticalCentered(false);
ob_end_clean();
ob_start();
header('Content-Type : application/vnd.ms-excel');
header('Content-Disposition:attachment;filename="'.'产品信息表-'.date("Y年m月j日").'.xls"');
$objWriter= PHPExcel_IOFactory::createWriter($objectPHPExcel,'Excel5');
$objWriter->save('php://output');代码执行后，会直接生成Excel，并提示下载或打开。
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