Recurly Stream PDF invoice with PHP

gistfile1.php

try {
        $pdf = Recurly_Invoice::getInvoicePdf('2149', 'en-US');
} catch (Recurly_NotFoundError $e) {
        print "Invoice not found.\n";
}

header('Content-type: application/pdf'); 
header('Accept-Language: en-US'); 
header('Content-Disposition: attachment; filename="downloaded.pdf"');

print $pdf;