ID: 23056
Updated by: [EMAIL PROTECTED]
Reported By: dan1 at edenpics dot com
-Status: Analyzed
+Status: Bogus
Bug Type: Output Control
Operating System: Linux RedHat 7.1
PHP Version: 4.3.2RC1
New Comment:
Here's much simpler script that can be used to reproduce this bug in
IE6:
<?php
header("Content-type: image/gif");
header("Cache-Control: no-cache, must-revalidate");
readfile("bird.gif");
?>
And it really is bug in IE6..not in PHP. And it has actually existed in
IE since IE5 too.
Try search with google and you'll find couple of hundred
hits about this. You might wanna try find out what cache
preventing headers work for IE..it seems to be very picky about them.
Previous Comments:
------------------------------------------------------------------------
[2003-04-05 16:16:31] [EMAIL PROTECTED]
I don't see how this could possible be a PHP problem. I see nothing
wrong with the output of your script. I sent an IE6 request and looked
at the output. The headers sent by
http://www.edenpics.com/pub/iebug/bird.php were:
HTTP/1.1 200 OK
Date: Sat, 05 Apr 2003 23:13:47 GMT
Server: Apache
X-Powered-By: PHP/4.1.2
Cache-Control: no-cache, must-revalidate
Connection: close
Content-Type: image/gif
Followed by this gif datastream:
0000000 G I F 8 9 a 2 \0 ( \0 367 204 \0 001 002
002
0000020 003 002 \t 005 \n 017 \b 003 \b \f \n 002 \n \n \v
003
0000040 006 025 006 \t 035 \n \f 032 \f 021 036 024 024 026 020
024
0000060 036 \v 021 ! 016 023 ( 024 025 - 027 033 ) 022 031
2
0000100 033 036 0 032 $ . 025 # 8 033 ! < 030 ( :
!
0000120 + E # , N * 3 L ' 1 Q ' 1 \ 1
<
0000140 V / < b , > l + < r 7 E n : E
g
0000160 < M m ; J s = L ~ ? P | A N x
B
I see nothing wrong.
------------------------------------------------------------------------
[2003-04-05 15:59:06] dan1 at edenpics dot com
Yes, the bird was in JPEG before, I changed it in GIF, to be more
coherent with the code. It's because I tested several formats, sorry
for this incovenience. However, the bug appears in GIF or JPEG, so the
bug is the same now.
I just found out that the bug comes out only if we sent the
"Cache-Control" header along with the picture, which is something I
forgot to mention in my previous code, because I thought that it was
not relevant. In fact, THIS IS the problem.
So here is the code that really generates the bug:
<?
header("Content-type: image/gif");
header("Cache-Control: no-cache, must-revalidate");
$output="bird.gif"; // file name
$fd = fopen($output,"r");
$filelength=filesize($output);
$contents = fread($fd,$filelength);
echo $contents; fclose($fd);
?>
If you comment out the Cache-Control header line, everything works
fine, so this is a workaround. However, I think that it is still a PHP
bug, don't you ?
Please try again (1 minute), I updated the report page:
http://www.edenpics.com/pub/iebug/iebug2.phtml
Thank you.
------------------------------------------------------------------------
[2003-04-05 11:13:29] [EMAIL PROTECTED]
Disclaimer: the bird.gif _WAS_ jpeg before.. :)
------------------------------------------------------------------------
[2003-04-05 11:12:22] [EMAIL PROTECTED]
the example bird.gif is actually JPEG, not GIF..
And when having the correct script with correct imagetype,
this all works just fine.
This is NOT any bug in PHP.
------------------------------------------------------------------------
[2003-04-05 00:28:33] [EMAIL PROTECTED]
I copied your script directly and found a bird.gif image out there.
You can see the result at:
http://lerdorf.com/bird.php
Source code at:
http://lerdorf.com/bird.phps
Works ok for me. Perhaps you have something before or after the
start/end php tags, or do you have weird line endings or something? Do
an "od -c bird.php" and compare it to:
http://lerdorf.com/bird.txt
------------------------------------------------------------------------
The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
http://bugs.php.net/23056
--
Edit this bug report at http://bugs.php.net/?id=23056&edit=1
