PHP利用PHPExcel导出数据到Excel

//连接数据库
$mysql_server_name = "*.*.*.*";
$mysql_username="user";
$mysql_password="dbpasswd";
$mysql_database="test";
$conn = mysqli_connect($mysql_server_name,$mysql_username,$mysql_password,$mysql_database);
// 检测连接
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}
//设置字符集，如果不设置的话中文可能会乱码
$conn->query("set names utf8");
//查询数据
$sql = "SELECT * FROM testdata WHERE  inserttime > &#39;2019-09-13&#39; AND inserttime <&#39;2019-0916&#39;";
$result = $conn->query($sql);
//遍历将数据放入数组中
$data =array();
while ($row = $result->fetch_assoc())
{
    $data[] = $row;
}
//将查询出来的数据导入Excel中
require_once(&#39;./PHPExcel/PHPExcel.php&#39;);
// 创建Excel文件对象
$objPHPExcel = new PHPExcel();
// 设置文档信息，这个文档信息windows系统可以右键文件属性查看
$objPHPExcel->getProperties()->setCreator("wnn")
    ->setLastModifiedBy("wnn")
    ->setTitle("原创文章链接");
$objPHPExcel->setActiveSheetIndex(0)
    ->setCellValue(&#39;A1&#39;,&#39;文章ID&#39;)
    ->setCellValue(&#39;B1&#39;,&#39;标题&#39;)
    ->setCellValue(&#39;C1&#39;,&#39;链接&#39;)
    ->setCellValue(&#39;D1&#39;,&#39;作者&#39;)
    ->setCellValue(&#39;E1&#39;,&#39;发布时间&#39;);
//设置excel表单根据内容大小变化
$objPHPExcel->getActiveSheet()->getColumnDimension(&#39;A&#39;)->setAutoSize(true);
$objPHPExcel->getActiveSheet()->getColumnDimension(&#39;B&#39;)->setAutoSize(true);
$objPHPExcel->getActiveSheet()->getColumnDimension(&#39;C&#39;)->setAutoSize(true);
$objPHPExcel->getActiveSheet()->getColumnDimension(&#39;D&#39;)->setAutoSize(true);
$objPHPExcel->getActiveSheet()->getColumnDimension(&#39;E&#39;)->setAutoSize(true);
//$i=1是标题行
$i=2;
foreach ($data as $k=>$v){
    $objPHPExcel->setActiveSheetIndex(0)
        ->setCellValue(&#39;A&#39;.$i,$v[&#39;id&#39;])
        ->setCellValue(&#39;B&#39;.$i,$v[&#39;title&#39;])
        ->setCellValue(&#39;C&#39;.$i,$v[&#39;arcurl&#39;])
        ->setCellValue(&#39;D&#39;.$i,$v[&#39;writer&#39;])
        ->setCellValue(&#39;E&#39;.$i,$v[&#39;senddate&#39;]);
　　　//给C列的文字加上链接
    $objPHPExcel->getActiveSheet()->getCell(&#39;C&#39;.$i)->getHyperlink()->setUrl($v[&#39;arcurl&#39;]);
    $i++;
}
//给C列的超链接字体颜色变成蓝色
$length = count($data)+1;
$objPHPExcel->getActiveSheet()->getStyle( &#39;C2:C&#39;.$length)->getFont()->getColor()->setARGB(PHPExcel_Style_Color::COLOR_BLUE);
//文件名称
$filename=urlencode(&#39;原创作品&#39;).&#39;_&#39;.date(&#39;YmdHis&#39;);
//生成xls文件
ob_end_clean();//清除缓冲区,避免乱码
header(&#39;Content-Type: application/vnd.ms-excel&#39;);
header(&#39;Content-Disposition: attachment;filename="&#39;.$filename.&#39;.xls"&#39;);
header(&#39;Cache-Control: max-age=0&#39;);
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, &#39;Excel5&#39;);
$objWriter->save(&#39;php://output&#39;);