FPDF ouput() saves file with html extension

I'm saving a PDF document with FPDF using the following code...

$pdf->Output('doc.pdf','D');

...but it saves it as 'doc.pdf.html开发者_C百科'

Why is it adding the html extension?

The problem for this in my case, was that I was not terminating the script right after I echo'd out the PDF. I was using a framework and letting it finish out which was causing the problem. So just add an "exit" statement and it should fix it.

It does not add a '.html' extension:

source code:

case 'D':
    //Download file
    if(ob_get_length())
        $this->Error('Some data has already been output, can\'t send PDF file');
    header('Content-Type: application/x-download');
    if(headers_sent())
        $this->Error('Some data has already been output, can\'t send PDF file');
    header('Content-Length: '.strlen($this->buffer));
    header('Content-Disposition: attachment; filename="'.$name.'"');
    header('Cache-Control: private, max-age=0, must-revalidate');
    header('Pragma: public');
    ini_set('zlib.output_compression','0');
    echo $this->buffer;
break;

so the problem must be somewhere else.