ID:               50610
 User updated by:  ceo at l-i-e dot com
 Reported By:      ceo at l-i-e dot com
-Status:           Feedback
+Status:           Open
 Bug Type:         GD related
 Operating System: N/A
 PHP Version:      5.3.2-dev
 New Comment:

Adding imagesavealpha($rotated, 1); at line 7, immediately after
imagerotate but before imagegif does not have any visible effect.

I.e., it's still broken.


Previous Comments:
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[2009-12-30 23:51:01] j...@php.net

How about bug #41624 ?

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[2009-12-30 17:12:02] ceo at l-i-e dot com

I have confirmed this bug remains in 5.3.2-dev on a localhost box.

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[2009-12-30 05:59:51] ceo at l-i-e dot com

Description:
------------
imagerotate for a transparent input GIF, trying to output a transparent
output GIF.

At various angles it will fill the new / expanded background with the
wrong (non-transparent black) color.

This may be the same as http://bugs.php.net/bug.php?id=44429 but I
can't tell without the other guy's image either...

It could also be related to http://bugs.php.net/bug.php?id=39366
somehow, but that pre-dates this quite a bit, and is supposedly fixed in
CVS (now SVN).  Plus that's PNG not GIF, though there may be shared code
at work.

I do have a nice repro for you below.

NOTE:
This happened to me in PHP 5.2.5, and it's conceivable that it has been
fixed, but it has also been confirmed in 5.2.6 by Jochem Maas:
[quote]
I tested on  PHP5.2.6, with the following GD installed:

GD Version                 bundled (2.0.34 compatible)
FreeType Support         enabled
FreeType Linkage         with freetype
FreeType Version         2.3.7
GIF Read Support         enabled
GIF Create Support         enabled
JPG Support                 enabled
PNG Support                 enabled
WBMP Support                 enabled
XPM Support                 enabled
XBM Support                 enabled

I get the same result as you. I played with it a bit and the issue
'seems' to revolve
around transparency in the original gif. I got the following code to
output what you
want but I have no idea if it's usable for you (you may be relying on
the
transparency in
the original gif):


Reproduce code:
---------------
http://www.6112northwolcott.com/dogfight/rotate.phps

Expected result:
----------------
All the images in the actual result should have white / transparent
backgrounds, unless I'm being particularly dense today.


Actual result:
--------------
http://www.6112northwolcott.com/dogfight/rotate.htm



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