php - PHPExcel 的问题

Question

我有一个简单的表格:

CREATE TABLE IF NOT EXISTS `users` (
  `id` int(10) NOT NULL AUTO_INCREMENT,
  `email` varchar(225) NOT NULL DEFAULT '',
  `date` datetime DEFAULT NULL,
  `status` int(1) NOT NULL DEFAULT '1',
  PRIMARY KEY (`id`)
) ENGINE=MyISAM;

我正在使用 PHPExcel 以 XLS 格式导出表格。 我写了一个简单的 PHP 行:

$dbhost = "localhost";
$dbuser = "root";
$dbpass = "";
$dbname = "svn_register";

mysql_connect($dbhost,$dbuser,$dbpass);
mysql_select_db($dbname);

// require the PHPExcel file
require 'Classes/PHPExcel.php';

// simple query

$query = "SELECT * FROM users ORDER by id DESC";

if ($result = mysql_query($query) or die(mysql_error())) {
    // Create a new PHPExcel object
   $objPHPExcel = new PHPExcel();
   $objPHPExcel->getActiveSheet()->setTitle('List of Cities');

   // Loop through the result set
    $rowNumber = 1;
    while ($row = mysql_fetch_row($result)) {
       $col = '';
       foreach($row as $cell) {
          $objPHPExcel->getActiveSheet()->setCellValue($col.$rowNumber,$cell);
          $col++;
       }
       $rowNumber++;
   }
   // Save as an Excel BIFF (xls) file
   $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');

   header('Content-Type: application/vnd.ms-excel');
   header('Content-Disposition: attachment;filename="myFile.xls"');
   header('Cache-Control: max-age=0');

   $objWriter->save('php://output');
   exit();
}
echo 'a problem has occurred... no data retrieved from the database';

我得到一个空白页面。

Answer 1

当您最初提出这个问题时，我多次说过这一点...该脚本将生成一个空白页面。

$objWriter->save('CityList.xls');

将 Excel 工作簿写入服务器文件系统上名为 CityList.xls 的文件中。它不在屏幕上显示任何内容...因此屏幕将为空白。

查看服务器。找到名为 CityList.xls 的文件。在 MS Excel 中打开该文件。

编辑

或者，设置适当的 header ，然后保存到 php://output

// connection with the database
$dbhost = "localhost";
$dbuser = "root";
$dbpass = "";
$dbname = "database";

mysql_connect($dbhost,$dbuser,$dbpass);
mysql_select_db($dbname);

// require the PHPExcel file
require 'Classes/PHPExcel.php';

// simple query

$query = "SELECT id FROM users ORDER by id DESC";

if ($result = mysql_query($query) or die(mysql_error())) {
    // Create a new PHPExcel object
   $objPHPExcel = new PHPExcel();
   $objPHPExcel->getActiveSheet()->setTitle('List of Cities');

   // Loop through the result set
    $rowNumber = 1;
    while ($row = mysql_fetch_row($result)) {
       $col = 'A';
       foreach($row as $cell) {
          $objPHPExcel->getActiveSheet()->setCellValue($col.$rowNumber,$cell);
          $col++;
       }
       $rowNumber++;
   }
   // Save as an Excel BIFF (xls) file
   $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');

   header('Content-Type: application/vnd.ms-excel');
   header('Content-Disposition: attachment;filename="myFile.xls"');
   header('Cache-Control: max-age=0');

   $objWriter->save('php://output');
   exit();
}
echo 'a problem has occurred... no data retrieved from the database';

编辑2

替代方案:

// Loop through the result set
$rowNumber = 1;
while ($row = mysql_fetch_row($result)) {
    $objPHPExcel->getActiveSheet()->fromArray(array($row),NULL,'A'.$rowNumber++);
}

还应该修复此错误

编辑#3

添加标题行。

$rowNumber = 1;
$headings = array('Name','EMail','Phone');
$objPHPExcel->getActiveSheet()->fromArray(array($headings),NULL,'A'.$rowNumber);

$rowNumber++

// Loop through the result set
while ($row = mysql_fetch_row($result)) {
   $col = 'A';
   foreach($row as $cell) {
      $objPHPExcel->getActiveSheet()->setCellValue($col.$rowNumber,$cell);
      $col++;
   }
   $rowNumber++;
}