【发布时间】：2017-06-14 07:14:27
【问题描述】：
当我想将文件导出为 pdf 时出现此错误
无法流式传输 pdf：标头已发送
这是我在控制器中的 export_to_pdf 函数
function export_to_pdf() {
$this->load->helper('warsito_pdf_helper');
$this->load->model('gedung/gedung_model');
$data['row'] = $this->gedung_model->laporan_perawatan_keseluruhan();
$object = $this->load->view('manage/pdf_report_all', $data);
$filename = 'Report.pdf';
generate_pdf($object, $filename, true);
}
我有一个名叫 warsito_pdf_helper 的助手
function generate_pdf($object, $filename, $direct_download = true) {
require_once 'dompdf/dompdf_config.inc.php';
$dompdf = new DOMPDF();
$dompdf->load_html($object);
$dompdf->render();
if($direct_download == true) {
$dompdf->stream($filename);
} else {
return $dompdf->output();
}
}
最后是 pdf 的视图
pdf_report_all.php
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="">
<meta name="author" content="">
<!-- Favicons-->
<link rel="apple-touch-icon-precomposed" href="<?php echo base_url();?>assets/home/assets/img/favicon/apple-touch-icon-152x152.png">
<meta name="msapplication-TileColor" content="#FFFFFF">
<meta name="msapplication-TileImage" content="<?php echo base_url();?>assets/home/assets/img/favicon/mstile-144x144.png">
<link rel="icon" href="<?php echo base_url();?>assets/home/assets/img/favicon/favicon-32x32.png" sizes="32x32">
<link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
<!-- Materialize core CSS -->
<link href="<?php echo base_url();?>assets/home/materialize/css/materialize.css" rel="stylesheet" type="text/css">
<!-- HTML5 shim and Respond.js IE8 support of HTML5 elements and media queries -->
<!--[if lt IE 9]>
<script src="assets/js/html5shiv.js"></script>
<script src="assets/js/respond.min.js"></script>
<![endif]-->
<link href="<?php echo base_url();?>assets/home/template.css" rel="stylesheet" type="text/css">
</head>
<body>
<center><b><h5>Laporan Pembayaran Keseluruhan</h5></b></center>
<!--
<div class="container">
<div class="row">
<div class="col s12 m12"> -->
<table class="bordered" align="center">
<tr>
<th>No</th>
<th>No Ref</th>
<th>Jenis Perawatan</th>
<th>Tanggal Pembayaran Tagihan</th>
<th>Jumlah Pembayaran</th>
</tr>
<?php foreach($row as $row): $no = 1; $total_pembayaran = 0;?>
<tr>
<td><?php echo $no++?></td>
<td><?php echo $row['NO_ID']?></td>
<td><?php echo $row['NAMA_PERAWATAN']?></td>
<td><?php echo $row['TANGGAL_PEMBAYARAN']?></td>
<td><?php echo "Rp. ".number_format($row['BIAYA'])?></td>
</tr>
<?php $total_pembayaran = $row['BIAYA'] + $total_pembayaran?>
<?php endforeach;?>
</table>
<table style="display: inline-block;">
<tr>
<td><b>Total Pembayaran Keseluruhan: </b></td>
<td><b><?php echo "Rp. ".number_format($total_pembayaran)?></b></td>
</tr>
</table>
<!--
</div>
</div>
</div> -->
<script src="<?php echo base_url();?>assets/home/assets/js/jquery.min.js"></script>
<script src="<?php echo base_url();?>assets/home/materialize/js/materialize.js"></script>
<script src="<?php echo base_url();?>assets/home/index.js"></script>
</body>
</html>
我以前用谷歌搜索过我的问题，主要是说这个错误发生是因为我的文件中有多余的行我已经尝试了这个链接DOMPDF: Unable to stream pdf: headers already sent的解决方案 并在stream()之后添加如下代码；
$f;
$l;
if(headers_sent($f,$l))
{
echo $f,'<br/>',$l,'<br/>';
die('now detect line');
}
但是错误仍然发生，所以任何人都可以告诉我我的方法或代码有什么问题，谢谢
【问题讨论】：
标签： php mysql codeigniter dompdf