Internal Server Error readfile

Question

I have a view-script which opens a pdf-file, it looks like follows:

<?php
$this->title = 'arbeitskalender';
//ini_set('display_errors',1);
header('Content-Type:application/pdf');
header('Content-Disposition', 'attachment; fileName=arbeitskalender.pdf');
readfile('./pdfs/arbeitskalender.pdf');
?>

On my localhost (wamp-server) it works well and the file opens without any error, uploaded to my webspace (not my own server, only a webspace) I get

internal server error

.

What's the problem? Is there a possibility to get a more informative error message? Because it is not my server, I can't have a look in the server log.

It doesn't look like you're in a class, but still using `$this`. Can you confirm whether this is actually inside a class or not? — Jonnix, Aug 24 '15 at 16:37
Well, you need to look into the error log to see what actually caused the HTTP 500 error. — Charlotte Dunois, Aug 24 '15 at 16:58

score 2 · Accepted Answer · edited May 23 '17 at 12:14

Yes, a lot of:

check the network tab in your developer bar. Eventually, turn off (starts the header lines with //) your headers in your script to see the error message (for debugging)
check the logfiles of your framework (if you use)
check if your application can write log entries
enable and display errors (see Showing all errors and warnings)
check if php can read the file (permissions and existing of the file)
check if you only get the internal server error on this page

Looking to your script:

what's $this? I don't see a class definition
can php find the file?

score 0 · Answer 2 · answered Aug 24 '15 at 17:54

0

Check ./pdfs/arbeitskalender.pdf permissions. I guess it's not readable for apache user

answered Aug 24 '15 at 17:54

Mostafa Lavaei

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score 0 · Answer 3 · answered Sep 01 '15 at 11:24

I checked all your suggestions, I learned some more, but couldn't solve the problem. I found another codesnippet which doesn't use readfile and so far this works fine.

<?php
require_once 'Zend/Pdf.php';

header('Content-Type: application/pdf');
header('Content-Disposition: inline; filename=arbeitskalender.pdf');
header('Cache-Control: private, max-age=0, must-revalidate');
header('Pragma: public');
ini_set('zlib.output_compression','0');
echo file_get_contents("./pdfs/arbeitskalender.pdf");

?>
<html>
<body>

Internal Server Error readfile

3 Answers3