代码如下:

//模板存放目录
$dir = $DOCUMENT_ROOT.'/backoffice/admin/oemcheck/';

$templateName = '1.xlsx';
$outputFileName = '模板.xlsx';
$txt='test';

//实例化Excel读取类
$PHPReader = new PHPExcel_Reader_Excel2007();
if(!$PHPReader->canRead($dir.$templateName)){
 $PHPReader = new PHPExcel_Reader_Excel5();
 if(!$PHPReader->canRead($dir.$templateName)){
  echo '无法识别的Excel文件！';
  return false;
 }
}
//读取Excel
$PHPExcel = $PHPReader->load($dir.$templateName);
//读取工作表1
$currentSheet = $PHPExcel->getSheet(0);

$currentSheet->setCellValue('B13',iconv('gbk','utf-8',$txt));//表头赋值//
//实例化Excel写入类
$PHPWriter = new PHPExcel_Writer_Excel2007($PHPExcel);
ob_start();
header("Content-Type: application/force-download");
header("Content-Type: application/octet-stream");
header("Content-Type: application/download");
header('Content-Disposition:attachment;filename="' .$outputFileName. '"');//输出模板名称
header("Content-Transfer-Encoding: binary");
header("Last-Modified:".gmdate("D, d M Y H:i:s")." GMT");
header('Pragma: public');
header('Expires: 30');
header('Cache-Control: public');
$PHPWriter->save('php://output');