严重错误:已经输出了一些数据，无法发送PDF文件 [英] Fatal error: Some data has already been output, can't send PDF file
问题描述
这是我的代码
<body>
<section id="container" >
<?php require 'inc/header.php';?>
<section id="main-content">
<section class="wrapper">
<div class="row">
<div class="row mt">
<div class="col-md-12">
<div class="content-panel">
<!-- 1ere ETAPE -->
<h1 style="text-align:center ;"> Rénitialisation </h1>
<div class="etape1">
<?php
require('inc/reni/fpdf.php');
$pdf=new FPDF();
$pdf->AddPage();
$pdf->SetFont('Arial','B',10);
$pdf->Ln();
$pdf->Ln();
$pdf->SetFont('times','B',10);
$pdf->Cell(25,7,"nom");
$pdf->Cell(30,7,"prenom");
$pdf->Ln();
$pdf->Cell(450,7,"----------------------------------------------------------------------------------------------------------------------------------------------------------------------");
$pdf->Ln();
include ('inc/reni/db.php');
$sql="SELECT * FROM table1";
$result = $bdd->query($sql);
while($rows=$result->fetch())
{
$nom = $rows[0];
$prenom = $rows[1];
$pdf->Cell(25,7,$nom);
$pdf->Cell(30,7,$prenom);
$pdf->Ln();
}
$pdf->Output();?>
</div>
</div>
</div>
</div><!-- /col-md-12 -->
</div><!-- /row -->
</section><! --/wrapper -->
</section><!-- /MAIN CONTENT -->
</section>
<?php require 'inc/script.php';?>
</body>
错误是:致命错误:未捕获异常:FPDF错误:已经输出了某些数据，无法发送PDF文件. 我尝试一切，如添加ob_end_clean(); ob_start(); ob_end_flush(); 当我这样做时，我的页面为空，Pdf不显示
The error is : Fatal error: Uncaught Exception: FPDF error: Some data has already been output, can't send PDF file. i try everything like add ob_end_clean(); ob_start ();ob_end_flush(); and when i do this my page is empty the Pdf does not display
推荐答案
您已经在输出内容.
通常在某处有回声，或者您有这样的php代码:
Usually there's an echo somewhere, or you have php code like this:
<HTML>
<?php // do my pdf thing ?>
如果pdf输出之前有任何内容，无论是空格，一些html，回显，还是打印，都会出现此错误.
If anything is in front of your pdf output, wether it be a space, some html, an echo, a print, you will get this error.
包含的pdf的php结束标记后甚至空格都可能导致此问题.
Even a space after a php closing tag of a pdf that was included can cause this.
<?php
class PDFWriter() {
// some code
}
?> <-- space here
<?php include('pdfwriter.php');
这就是为什么您应该省略纯php文件上的结束标记，以免发生这种情况的原因.
That's why you should omit the closing tags on pure php files so that doesn't happen.
在您的情况下，您要添加所有这些div
In your case you're adding all these divs
<body>
<section id="container" >
<?php require 'inc/header.php';?>
<section id="main-content">
<section class="wrapper">
<div class="row">
<div class="row mt">
<div class="col-md-12">
<div class="content-panel">
<!-- 1ere ETAPE -->
<h1 style="text-align:center ;"> Rénitialisation </h1>
<div class="etape1">
这违反了无输出发送要求.
And that violates the no output sending requirement.
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