ID:               25331
 User updated by:  hgshoggins at yahoo dot fr
 Reported By:      hgshoggins at yahoo dot fr
-Status:           Feedback
+Status:           Open
 Bug Type:         GD related
 Operating System: Linux web23.90.ha.ovh.net 2.4.20
 PHP Version:      4.3.2
 New Comment:

Thanks Alot!
I'll try to make them do this...

Hoggins


Previous Comments:
------------------------------------------------------------------------

[2003-08-31 13:03:54] [EMAIL PROTECTED]

Your ISP should really use the bundled version which is much more
stable then the external library. If it works for you with the bundled
library, then it's not a problem with PHP most likely. So you'll have
to ask them to recompile PHP and use the bundled GD library.

Derick

------------------------------------------------------------------------

[2003-08-31 12:53:36] hgshoggins at yahoo dot fr

Description:
------------
hi,
using a mysql db, and jpeg images strings in BLOB fields. All the
images are readable on a computer through any image editor. But
imagecreatefromstring() doesn't recognize some of them as valid jpeg
strings, (it returns the classic error message "not a valid image
string") and I couldn't be able to find the commom criteria of these
images.
The script is located on a server I do not own, and the admin says it's
my script's fault. Some images work, and some not.
The problem appeared since they went up to GD2.
I'm only a PHP *USER*, so I do not use, and do not understand the
compiling options, but I use the bundled gd2 library by uncommenting
the line: "extension=php_gd2.dll". I test my scripts on a WinXP machine
with Apache 2.0.45, and it perfectly works. I figured that, even if
both my ISP and I are using GD2, it doesn't display the same way in
phpinfo(): mine appears "bundled", and the ISP's doesn't.

So I think the imagecreatefromstring() function doesn't accept some
strings any more, which the previous version did on my ISP' servers.

I hope that all the infos I provided will help you to solve the
problem, which I'm sure doesn't come from me.


Reproduce code:
---------------
I just call a <img src="script.php?id=[the id of the image in my
database]">


The script "script.php": (which normally contains the database
connection infos, and the connection opening function)

$sql="SELECT * FROM image_db WHERE id='$img_id'";
$resultat=mysql_query($sql);

$quality=100;

$ligne=mysql_fetch_array($resultat);
$data=$ligne["data"];
$im=imagecreatefromstring($data);
$im=imagejpeg($im,"",$quality);
imageinterlace($im,$interlace);
imagedestroy($im);


Expected result:
----------------
I whish it simply displayed *all* the images. It does for some, and
doesn't for some others wich are -I think I repeat myself- perfectly
readable otherwise.

Actual result:
--------------
Well, in fact it doesn't, and also displays an HTTP 500 Internal Server
Error.
I could get the error message only thanks to the admin, who tracked the
error for me in a file.


------------------------------------------------------------------------


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