Edit report at https://bugs.php.net/bug.php?id=71316&edit=1
ID: 71316
Comment by: michael dot hartmann at refx dot com
Reported by: humbads at alum dot mit dot edu
Summary: libpng warning from imagecreatefromstring
Status: Assigned
Type: Bug
Package: GD related
Operating System: FreeBSD 10.2
PHP Version: 5.6.17
Assigned To: pajoye
Block user comment: N
Private report: N
New Comment:
PHP 7.0.8 x64 on Windows. Same problem. Please fix.
Previous Comments:
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[2016-01-10 01:48:05] pajoye@php.net
Thanks for your report!
Hm. This is a libpng warning.I suppose they move this warning to a simple warning level.
I will see if we can implement the warning only callback without introducing too much noises:
png_structp png_create_read_struct(png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr
error_fn, png_error_ptr warn_fn);
only png_error is used now and generates php error.
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[2016-01-08 22:27:13] humbads at alum dot mit dot edu
A workaround is to run the following ImageMagick command on the PNG file before processing:
mogrify -strip 1CCHOHSULGF78KW.png
Source:
http://stackoverflow.com/questions/22745076/libpng-warning-iccp-known-incorrect-srgb-profile
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[2016-01-08 22:07:27] humbads at alum dot mit dot edu
Description:
------------
imagecreatefromstring is writing a warning message to stderr that can not be suppressed by
'@' or captured by the error handler. It should emit a proper PHP warning instead.
I have the following version of libPNG:
php -i | grep -i libpng
libPNG Version => 1.6.19+apng
To run the test script, download the sample PNG image from here:
http://imgbox.com/BzOXLiOr
Note: libPNG 1.5.18 on PHP 5.6.17 for Windows does not have this problem.
Test script:
---------------
php -r
'@var_dump(imagecreatefromstring(file_get_contents("1CCHOHSULGF78KW.png")));'
Expected result:
----------------
resource(6) of type (gd)
Actual result:
--------------
libpng warning: iCCP: known incorrect sRGB profile
resource(6) of type (gd)
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Edit this bug report at https://bugs.php.net/bug.php?id=71316&edit=1