php - TCPDF Save file to folder?

Question

I'm using TCPDF to print a receipt and then send it to customer with phpMailer, but I have a problem:

I have no idea how to save the file into a pdf.

I've tried this:

// reset pointer to the last page
$pdf->lastPage();

//Close and output PDF document
$pdf->Output('kuitti'.$ordernumber.'.pdf', 'I');
$this->Output("kuitit");

Answer 1

try this

$pdf->Output('kuitti'.$ordernumber.'.pdf', 'F');