Bug #41491 [Com]: header() adds extra x'200A' space/LF to start of file
Edit report at https://bugs.php.net/bug.php?id=41491&edit=1
ID: 41491
Comment by: dosergio at ig dot com dot br
Reported by: jeff at pointhere dot net
Summary: header() adds extra x'200A' space/LF to start of
file
Status: Not a bug
Type: Bug
Package: HTTP related
Operating System: Sun OS 5.10 (Solaris 10)
PHP Version: 5.2.2
Block user comment: N
Private report: N
New Comment:
I have a similar problem.
If I use:
header("Content-type: application/json");
to a page that will serve actual json code, the response gains 4 spaces (char 32) at the beginning.
Ok, this do not break the script, json still works but I am questioning the fidelity of content, as
those 4 spaces do not exist in original json code but appears in the output when I set the header.
If I comment header line, the spaces disappear immediatelly. Already tried to replace quotes by
apostrofes (') but don't work either.
I suspect that header function is adding space internally.
Previous Comments:
------------------------------------------------------------------------
[2007-05-28 20:10:13] tony2001@php.net
.
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[2007-05-27 22:18:09] jeff at pointhere dot net
THAT DID IT!! I then started experimenting with the code - I took out all of the code that had any
variables and it worked. As soon as I added them in it did not. Then I changed the code to work
with apostrophes rather than quotes and put the variables back in with a concatonation and it
worked! I hope this makes sense and leads to a fix using the quotes and replacable variables. This
code works as expected and you can color me thrilled:
// Start sending the file
ob_start();
header('Pragma: public');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Content-Type: text/plain');
header('Content-Disposition: attachment; filename="'.$filename.'"');
header('Content-Transfer-Encoding: 7bit');
echo($cardprint_file);
ob_end_flush();
Thank you so much for pointing me down the path that led me to a work-around and a working
program!!!
Jeff
------------------------------------------------------------------------
[2007-05-27 17:50:20] iliaa@php.net
Can you try leaving header() calls with static parameters (no embeded
variables) and see if you still get the extra chars?
------------------------------------------------------------------------
[2007-05-24 15:50:34] jeff at pointhere dot net
Description:
------------
When using the header() function to prepend a text file so that a user can save a downloaded file,
the resulting file has two extra characters on the front of the file (hex '200A' - space
and line-feed). When header() functions are removed, the file appears to load into the browser
correctly.
Reproduce code:
---------------
// Start sending the file
ob_start();
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: private", false);
header("Content-Type: text/plain");
header("Content-Length: " . $filesize);
header("Content-Disposition: attachment; filename=\"" . $filename .
"\"");
header("Content-Transfer-Encoding: 7bit");
echo($cardprint_file);
ob_end_flush();
exit;
Expected result:
----------------
The user's browser should open a window that asks to Open, Save or Cancel the download. When
saving or opening the file the contents of $cardprint_file should be the ONLY contents (the contents
were verified to be correct with the var_dump command).
Actual result:
--------------
The first two characters in the file (which translate to a blank line) are an ASCII hex 20 (space)
and an ASCII hex 0A (Line feed).
------------------------------------------------------------------------
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