TCPDF ERROR: Some data has already been output, can’t send PDF file

TCPDF ERROR: Some data has already been output, can’t send PDF file

Hi Donald!

The error you have mentioned happens when the output is sent from the script well before the PDF file is being sent.

To resolve this, in the function Output() just add the line ob_end_clean(), as shown below:

public function Output($name = \\\’\\\’, $dest = false)
{
// close the pdf and clean up
$this->_cleanUp();

// if on debug mode
if ($this->_debugActif) {
$this->_DEBUG_add(\\\’Before output\\\’);
$this->pdf->Close();
exit;
}

// complete parameters
if ($dest===false) $dest = \\\’I\\\’;
if ($dest===true) $dest = \\\’S\\\’;
if ($dest===\\\’\\\’) $dest = \\\’I\\\’;
if ($name==\\\’\\\’) $name=\\\’document.pdf\\\’;

// clean up the destination
$dest = strtoupper($dest);
if (!in_array($dest, array(\\\’I\\\’, \\\’D\\\’, \\\’F\\\’, \\\’S\\\’, \\\’FI\\\’,\\\’FD\\\’))) $dest = \\\’I\\\’;

// the name must be a PDF name
if (strtolower(substr($name, -4))!=\\\’.pdf\\\’) {
throw new HTML2PDF_exception(0, \\\’The output document name \\\”\\\’.$name.\\\’\\\” is not a PDF name\\\’);
}

// call the output of TCPDF
ob_end_clean(); //solved
return $this->pdf->Output($name, $dest);
}