Thinkphp5安装PHPExcel
网上很多版本都说要先从官网下载PHPExcel，然后放到vendor目录，这是TP5以前版本的用法。TP5版本直接可以使用composer安装：
composer require phpoffice/phpexcelThinkphp5使用PHPExcel包操作excel示例
use PHPExcel_IOFactory;
use PHPExcel;
use PHPExcel_Worksheet_MemoryDrawing;
use PHPExcel_Cell_DataType;
use PHPExcel_Style_Alignment;
use PHPExcel_Style_NumberFormat;
// Create new PHPExcel object
$objPHPExcel = new PHPExcel();
//设置文档属性
$objPHPExcel->getProperties()
->setCreator("web100.cc")
->setLastModifiedBy("web100.cc")
->setTitle("Office 2007 XLSX Test Document")
->setSubject("Office 2007 XLSX Test Document")
->setDescription("Test document generated using PHP classes.")
->setKeywords("office 2007 openxml php")
->setCategory("Test result file");
//设置当前活动的sheet
$objPHPExcel->setActiveSheetIndex(0);
//选定当前Sheet
$objActSheet = $objPHPExcel->11getActiveSheet();
//设置sheet名字
$objActSheet->setTitle('phpexcel demo');
//由PHPExcel根据传入内容自动判断单元格内容类型
$objActSheet->setCellValue('A1', "Firstname");
$objActSheet->setCellValue('B1', "Lastname");
$objActSheet->setCellValue('C1', "Phone");
$objActSheet->setCellValue('D1', "Fax");
$objActSheet->setCellValue('E1', "Address");
$objActSheet->setCellValue('F1', "ZIP");
$objActSheet->setCellValue('G1', "DATE");
//直接按坐标位置设置值
$objActSheet->setCellValueByColumnAndRow(0, 8, 'firstname');
$objActSheet->setCellValueByColumnAndRow(1, 8, 'lastname');
// 单元格填充值
$objActSheet->setCellValue('A2', "小风");
$objActSheet->setCellValue('B2', "wang");
//设置列宽
$objActSheet->getColumnDimension('C')->setWidth('20');
// 设置行高
$objActSheet->getRowDimension('9')->setRowHeight(20); //第9行，如果setRowHeight(-1)，表示自适应
//设置默认行高
$objActSheet->getDefaultRowDimension()->setRowHeight(15);
// 设置自动换行
$objActSheet->getStyle('A4')->getAlignment()->setWrapText(true);
// 设置字体
$objActSheet->getStyle('A1')->getFont()->setName('宋体');
// 字号
$objActSheet->getStyle('A1')->getFont()->setSize(12);
// 加粗
$objActSheet->getStyle('A1')->getFont()->setBold(true);
//说明：$objActSheet->getStyle('A1:G10')，可以通过这种方式来选择一片单元格！
// 设置单元格格式
$objActSheet->getCell('C2')->setValueExplicit('861391327543258', PHPExcel_Cell_DataType::TYPE_NUMERIC);
// 日期
$objActSheet->setCellValue('G2', '2008-12-31');
$objActSheet->getStyle('G2')->getNumberFormat()->setFormatCode(PHPExcel_Style_NumberFormat::FORMAT_DATE_YYYYMMDDSLASH);
// 时间戳
$time = gmmktime(0,0,0,12,31,2008); // int(1230681600)
$objActSheet->setCellValue('G3', PHPExcel_Shared_Date::PHPToExcel($time));
$objActSheet->getStyle('G3')->getNumberFormat()->setFormatCode(PHPExcel_Style_NumberFormat::FORMAT_DATE_YYYYMMDDSLASH);
// url
$objActSheet->setCellValue('G11', 'www.feishuai.vip');
$objActSheet->getCell('G11')->getHyperlink()->setUrl('http://www.feishuai.vip');
// 另一个sheet
$objActSheet->setCellValue('G12', 'sheetb');
$objActSheet->getCell('G12')->getHyperlink()->setUrl("sheet://'sheetb'!A1");
// 水平居上
$objActSheet->getStyle('A9:B9')->getAlignment()->setVertical(PHPExcel_Style_Alignment::VERTICAL_TOP);
// 单元格换行
$objActSheet->getStyle('G2:G3')->getAlignment()->setWrapText(true);
// 合并
$objActSheet->mergeCells('A18:E22');
// 隐藏D列
$objActSheet->getColumnDimension('D')->setVisible(false);
//
$objActSheet->getColumnDimension('E')->setOutlineLevel(1);
$objActSheet->getColumnDimension('E')->setVisible(false);
$objActSheet->getColumnDimension('F')->setOutlineLevel(1);
$objActSheet->getColumnDimension('F')->setVisible(false);
$objActSheet->getColumnDimension('F')->setCollapsed(true);
// 固定第一行
$objActSheet->freezePane('A2');
// 保护工作表
$objActSheet->getProtection()->setPassword('PHPExcel');
$objActSheet->getProtection()->setSheet(true);
$objActSheet->getProtection()->setSort(true);
$objActSheet->getProtection()->setInsertRows(true);
$objActSheet->getProtection()->setFormatCells(true);
//设置边框
$sharedStyle1 = new PHPExcel_Style();
$sharedStyle1->applyFromArray(array('borders' => array('left' => array('style' => PHPExcel_Style_Border::BORDER_MEDIUM))));
$objActSheet->setSharedStyle($sharedStyle1, "B1:B10");
// 创建一个新的工作表
$objWorksheet1 = $objPHPExcel->createSheet();
$objWorksheet1->setTitle('sheetb');
$objPHPExcel->setActiveSheetIndex(1);
// 创建一个图片
$gdImage = @imagecreatetruecolor(200, 20) or die('Cannot Initialize new GD image stream');
$textColor = imagecolorallocate($gdImage, 255, 255, 255);
imagestring($gdImage, 1, 5, 5, 'Created with PHPExcel (c1gstudio.com)', $textColor);
// 把创建的图片添加到工作表
$objDrawing = new PHPExcel_Worksheet_MemoryDrawing();
$objDrawing->setName('Sample image');
$objDrawing->setDescription('Sample image');
$objDrawing->setImageResource($gdImage);
$objDrawing->setRenderingFunction(PHPExcel_Worksheet_MemoryDrawing::RENDERING_JPEG);
$objDrawing->setMimeType(PHPExcel_Worksheet_MemoryDrawing::MIMETYPE_DEFAULT);
$objDrawing->setHeight(36);
$objDrawing->setWorksheet($objActSheet);
$objPHPExcel->setActiveSheetIndex(0);
// 保存
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');
$objWriter->save('testexcel'.time().'.xls');