Error opening pdf laravel (not display correctly in browser)

Question

I am having problems opening an existing pdf from a directory in laravel. The code works perfectly with pure PHP, but taking it to laravel not work properly because it does not display correctly in the browser, it looks like this:

%PDF-1.5 3 0 obj <> /Contents 4 0 R>> endobj 4 0 obj <> stream x�}��NAE��1�E=��bq~�I�� = .....

the code is as follows:

//eval_pdf.blade.php

File::requireOnce('fpdf.php');
File::requireOnce('fpdi.php');
$pdf = new FPDI('P','mm','Letter');
$pdf->AddPage();
$pdf->SetAutoPageBreak(true,10);  
$sourceFileName = app_path().'/include/formato.pdf';
$pdf->setSourceFile($sourceFileName);
$tplIdx = $pdf->importPage(1);
$pdf->useTemplate($tplIdx);
$pdf->SetFont('helvetica','B',8);
 .
 .
 .
$pdf->SetXY(86, 21);
$pdf->Write(0, utf8_decode($comp));
.
.
.
$pdf->Output();

What could be the problem and how to solve it?

Your output looks like the browser doesn't realize it's a PDF-file. Do you send the correct mime-type? — Snicksie
– Snicksie, Commented May 3, 2015 at 8:52
in fact not; I send data I need from a form, simply <input type = "submit" value = "Send" onclick = "this.form.action = '/ evaluacion_PDF'"> I have .. in routes.php Route :: post ('/ evaluacion_PDF' 'HomeController @ evaluacion_pdf') and my controller evaluacion_pdf public function () { View :: make return ('frontend.evaluacion_pdf'); } — D3vilRemix
– D3vilRemix, Commented May 3, 2015 at 9:09
I would not know where add the pdf mime type, if you can guide me a bit would greatly appreciate it — D3vilRemix
– D3vilRemix, Commented May 3, 2015 at 9:12
You need to set the content-type: stackoverflow.com/a/18685427/955026 I think you need the type application/pdf — Snicksie
– Snicksie, Commented May 3, 2015 at 9:20

Marcin Nabiałek · Accepted Answer · 2015-05-03 09:23:37Z

1

You should use something like this:

instead of $pdf->Output();

use:

$pdfContent = $pdf->Output('', "S");

to save content into string

and then return response for example:

    return response($pdfContent, 200,
        [
            'Content-Type'        => 'application/pdf',
            'Content-Length'      =>  strlen($pdfContent),
            'Content-Disposition' => 'attachment; filename="mypdf.pdf"',
            'Cache-Control'       => 'private, max-age=0, must-revalidate',
            'Pragma'              => 'public'
        ]
    );

answered May 3, 2015 at 9:23

Marcin Nabiałek

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