FPDF error: Some data has already been output, can't send PDF file on 000webhost
I am using FPDF class to generate a pdf on my website. Everything worked well until last few weeks when I started getting error:
FPDF error: Some data has already been output, can't send PDF file
During last few weeks haven't change anything in my code and I have also checked for any output execpt the fpdf (including unecessary space before php, disabled BOM signature etc.)
I have my website on 000webhost.com so I have also disabled the analytic code at the end of the page, but the pdf still doesn't work. The only trace I have left is misterious "" in a source code (I can see it when checking source code in Chrome browser).
I cant get to work even this simple example:
<?php
require('fpdf.php');
$pdf = new FPDF();
$pdf->AddPage()
$pdf->SetFont('Arial','B',16);
$pdf->Cell(40,10,'Hello World!');
$pdf->Output();
?>
Is there a way to disable any other output on web page by php? or does someone use fpdf on 000webhost?
Answer
just insert ob_end_clean(); before outputing.
<?php
require('fpdf.php');
$pdf = new FPDF();
$pdf->AddPage()
$pdf->SetFont('Arial','B',16);
$pdf->Cell(40,10,'Hello World!');
ob_end_clean();
$pdf->Output();
?>