Bug #81321 [Opn]: incorrect image on save
Edit report at https://bugs.php.net/bug.php?id=81321&edit=1
ID: 81321
User updated by: andrei at anleaf dot com
Reported by: andrei at anleaf dot com
Summary: incorrect image on save
Status: Open
Type: Bug
Package: *Graphics related
Operating System: CentOs 7.9
PHP Version: 7.4.22
Block user comment: N
Private report: N
New Comment:
One more png with the problem
https://www.dropbox.com/s/1kuirhjgvnfcohs/logo_orig-2.png?dl=0
Its conversion result (wrong) is here
https://www.dropbox.com/s/98iklpacpm5ppot/logo-orig-2_new.png?dl=0
Previous Comments:
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[2021-08-01 21:30:16] andrei at anleaf dot com
Description:
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problem with opening and saving some png images using imagecreatefrompng() and then save it using
imagepng($image,$file).
Image opens OK but when saved, the resulting image has broken alpha channel.
Happens with some png images.
Input image to test is here https://www.dropbox.com/s/c6ne72bobrt2iz9/logo_orig.png?dl=0
Resulting image with problem is here https://www.dropbox.com/s/xs4b4bv6208hiua/logo_new.png?dl=0
Test script:
---------------
$im = imagecreatefrompng("logo_orig.png");
imagepng($im,"logo_new.png");
imagedestroy($im);
Expected result:
----------------
saved image should look the same as an input image
Actual result:
--------------
saved image is completely distorted.
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Edit this bug report at https://bugs.php.net/bug.php?id=81321&edit=1
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