I'm trying to generate a .pdf file using mPDF in a Zend Framework application, from the output of the action.
Here is the code of my action:
public function testAction()
{
$this->_helper->viewRenderer->setNoRender();
$this->_helper->layout->disableLayout();
$this->view->foo = 'bar';
$this->render();
$output = $this->getResponse()->getBody();
$layout = new Zend_Layout();
$layout->content = $output;
$layout->setLayoutPath(dirname(dirname(__FILE__)) . '/views/layouts/');
$layout->setViewSuffix('tpl');
$layout->setLayout('pdf');
$html = $layout->render();
$mpdf = new mPDF('utf-8', 'A4');
$mpdf->WriteHTML($html);
$mpdf->Output('report.pdf', 'D');
}
If the content to be displayed is long (i.e. a few paragraphs), when downloading the .pdf file, Adobe Reader throws the following error: Adobe Reader could not open 'report.pdf' because it is either not a supported file type or because the file has been damaged (for example, it was sent as an email attachment and wasn't correctly decoded).
However, if I pass the same output to mpdf as a static variable, without using Zend Layout render, then the .pdf file opens without any errors. Also, Adobe Reader throws the issue if and only if the content is long (i.e. it works if there are only a couple of words).
Is there any limit I should be aware of?