How to save generated pdf file without errors in tcpdf?

Question

PHP

I have a php page that needs to be converted to pdf. I use tcpdf for translation. I include a PHP page using include(). The page is rendered but not saved and throws TCPDF ERROR: Some data has already been output, can't send PDF file.

<?php


require_once('tcpdf.php');

$pdf = new TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false);

$pdf->SetCreator(PDF_CREATOR);
$pdf->SetAuthor('Nicola Asuni');
$pdf->SetTitle('TCPDF Example 001');
$pdf->SetSubject('TCPDF Tutorial');
$pdf->SetKeywords('TCPDF, PDF, example, test, guide');

$pdf->SetHeaderData(PDF_HEADER_LOGO, PDF_HEADER_LOGO_WIDTH, PDF_HEADER_TITLE.' 001', PDF_HEADER_STRING, array(0,64,255), array(0,64,128));
$pdf->setFooterData(array(0,64,0), array(0,64,128));

$pdf->AddPage();

$pdf->setTextShadow(array('enabled'=>true, 'depth_w'=>0.2, 'depth_h'=>0.2, 'color'=>array(196,196,196), 'opacity'=>1, 'blend_mode'=>'Normal'));

$html = include('file.php');

$pdf->writeHTML($html, 'false', 'false', 'false', 'false', '');
$pdf->Output('example_001.pdf', 'I');
?>

How can I remove this error? Or how to remake the code, so that the page would not be displayed, but saved?

Answer 1

Recently I was engaged in pdf generation, the only one that helped normally is mpdf www.mpdf1.com/mpdf/index.php
A good example of using it is here https://github.com/kartik-v/yii2-mpdf/blob/master/...

Answer 2

Try like this:

ob_end_clean();
$pdf->Output('example_001.pdf', 'I');

But in general, something is output before PDF generation, better figure out what exactly. stackoverflow.com/questions/16011050/tcpdf-error-s...