在使用 PHPexcel 插件生成的可下载 excel 文件中未获取任何值

Question

我正在尝试使用 PHPexcel 插件从 mysql 数据生成可下载的 excel 文件。不幸的是，我在下载的 excel 文件中只得到列标题而不是它们的值

我哪里错了？另外，我希望 unicode 字符能够正确显示。 以下是我下载excel.php文件的代码-

<?php
require_once 'Classes/PHPExcel.php';
require_once 'Classes/PHPExcel/Writer/Excel2007.php';

$objPHPExcel = new PHPExcel();

$data=array();

$sql="SELECT s.t_id,s.t_text,p.user_name,p.description,s.time,p.place from t 
AS s INNER JOIN users AS p ON s.user_name=p.user_name order by s.time desc";
 $result = mysqli_query($con,$sql);

while($row = mysqli_fetch_array($result))   {
    $array=array("T Link" => $row[0],"T"=>$row[1] , "User Name" => $row[2] , 
"User Profile" => $row[3], "Time" => $row[4] , "Place" => $row[5]);
     array_push($data,$array);
  }

$objPHPExcel->getActiveSheet()->setCellValue('A1', 'T Link');
$objPHPExcel->getActiveSheet()->setCellValue('B1', 'T');
$objPHPExcel->getActiveSheet()->setCellValue('C1', 'User Name');
$objPHPExcel->getActiveSheet()->setCellValue('D1', 'User Profile');
$objPHPExcel->getActiveSheet()->setCellValue('E1', 'Time');
$objPHPExcel->getActiveSheet()->setCellValue('F1', 'Place');

$row=2;
foreach($data as $row->$value) {
$objPHPExcel->getActiveSheet()->setCellValue('A'.$row,$value->t_id);
$objPHPExcel->getActiveSheet()->setCellValue('B'.$row,$value->t_text);
$objPHPExcel->getActiveSheet()->setCellValue('C'.$row,$value->user_name);
$objPHPExcel->getActiveSheet()->setCellValue('D'.$row,$value->description);
$objPHPExcel->getActiveSheet()->setCellValue('E'.$row,$value->time);
$objPHPExcel->getActiveSheet()->setCellValue('F'.$row,$value->place);
    $row++;
}
header('Content-Type: application/vnd.openxmlformats-
officedocument.spreadsheetml.sheet');
header('Content-Disposition: attachment;filename="helloworld.xlsx"');
header('Cache-Control: max-age=0');
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
$objWriter->save('php://output');
?>

基于 Mark Ba​​ker 的 cmets，编辑了代码但仍然没有得到任何结果。这是我的编辑代码 -

<?php
require_once 'Classes/PHPExcel.php';
require_once 'Classes/PHPExcel/Writer/Excel2007.php';

$objPHPExcel = new PHPExcel();

$data=array();

$sql="SELECT s.t_id,s.t_text,p.user_name,p.description,s.time,p.place from t 
AS s INNER JOIN users AS p ON s.user_name=p.user_name order by s.time desc";
 $result = mysqli_query($con,$sql);

$objPHPExcel->getActiveSheet()->setCellValue('A1', 'T Link');
$objPHPExcel->getActiveSheet()->setCellValue('B1', 'T');
$objPHPExcel->getActiveSheet()->setCellValue('C1', 'User Name');
$objPHPExcel->getActiveSheet()->setCellValue('D1', 'User Profile');
$objPHPExcel->getActiveSheet()->setCellValue('E1', 'Time');
$objPHPExcel->getActiveSheet()->setCellValue('F1', 'Place');

while ($row = mysqli_fetch_array($result))
      {
$n=2;
foreach($data as $row) {
$objPHPExcel->getActiveSheet()->setCellValue('A'.$n,$row['t_id']);
$objPHPExcel->getActiveSheet()->setCellValue('B'.$n,$row['t_text']);
$objPHPExcel->getActiveSheet()->setCellValue('C'.$n,$row['user_name']);
$objPHPExcel->getActiveSheet()->setCellValue('D'.$n,$row['description']);
$objPHPExcel->getActiveSheet()->setCellValue('E'.$n,$row['time']);
$objPHPExcel->getActiveSheet()->setCellValue('F'.$n,$row['place']);
    $n++;
   }
}
header('Content-Type: application/vnd.openxmlformats-
officedocument.spreadsheetml.sheet');
header('Content-Disposition: attachment;filename="helloworld.xlsx"');
header('Cache-Control: max-age=0');
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
$objWriter->save('php://output');
?>

Answer 1

改变这一行：

foreach($data as $row->$value) {

到

foreach($data as $row => $value) {

"->" 运算符用于对象。这里解释了这两个运算符的区别：https://stackoverflow.com/a/14037376/577778

更新代码

<?php
require_once 'Classes/PHPExcel.php';
require_once 'Classes/PHPExcel/Writer/Excel2007.php';

$objPHPExcel = new PHPExcel();

$data=array();

$sql="SELECT s.t_id,s.t_text,p.user_name,p.description,s.time,p.place from t 
AS s INNER JOIN users AS p ON s.user_name=p.user_name order by s.time desc";
 $result = mysqli_query($con,$sql);

$objPHPExcel->getActiveSheet()->setCellValue('A1', 'T Link');
$objPHPExcel->getActiveSheet()->setCellValue('B1', 'T');
$objPHPExcel->getActiveSheet()->setCellValue('C1', 'User Name');
$objPHPExcel->getActiveSheet()->setCellValue('D1', 'User Profile');
$objPHPExcel->getActiveSheet()->setCellValue('E1', 'Time');
$objPHPExcel->getActiveSheet()->setCellValue('F1', 'Place');

$n=2;

while ($row = mysqli_fetch_array($result))
      {
$objPHPExcel->getActiveSheet()->setCellValue('A'.$n,$row['t_id']);
$objPHPExcel->getActiveSheet()->setCellValue('B'.$n,$row['t_text']);
$objPHPExcel->getActiveSheet()->setCellValue('C'.$n,$row['user_name']);
$objPHPExcel->getActiveSheet()->setCellValue('D'.$n,$row['description']);
$objPHPExcel->getActiveSheet()->setCellValue('E'.$n,$row['time']);
$objPHPExcel->getActiveSheet()->setCellValue('F'.$n,$row['place']);
    $n++;
}
header('Content-Type: application/vnd.openxmlformats-
officedocument.spreadsheetml.sheet');
header('Content-Disposition: attachment;filename="helloworld.xlsx"');
header('Cache-Control: max-age=0');
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
$objWriter->save('php://output');
?>