//$teacherList 是从数据库查出来的二维数组  $execlname是要导出的文件名
if(is_array($teacherList)){
  foreach($teacherList as $k=>$val){
    $strTable .= '';
    $strTable .= ''.$val['username'].'';
    $strTable .= ''.$val['school'].'';
    $strTable .= ''.$val['tel'].'';
    $strTable .= ''.$val['email'].'';
    $strTable .= ''.$val['teacher_name'].'';
    $strTable .= ''.$val['create_time'].'';
    $strTable .= ''.$val['status'].'';
    $strTable .= '';
  }
  //释放$teacherList
  unset($teacherList);
}
$strTable .='';
//excel表格名  对中文转码
$filename = iconv("utf-8", "GB2312", $excelname);
//导出表格  strTable表格内容   filename表格名
header("Content-type: application/vnd.ms-excel");
header("Content-Type: application/force-download");
header('Content-Disposition: attachment;filename="'.$excelname.'.xlsx"');
header('Expires:0');
header('Pragma:public');
echo ''.$strTable.'';
exit();
}

 这个是之前写的批量导入表格数据到数据库 使用PHPExcel实现数据批量导入到数据库