#30595 [Opn->Bgs]: Imagecopyresampled function bug

ID: 30595 Updated by: pajoye@php.net Reported By: lunter at interia dot pl -Status: Open +Status: Bogus Bug Type: GD related Operating System: WinXP SP2 PHP Version: 5.0.2 -Assigned To: +Assigned To: pajoye New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php imagecopyresampled uses a resampling using weight of each original pixels in the destination image. That means even by resizing by a ratio of 0.99, you will have part of the image that will differ, in your case the edges of your square. --Pierre Previous Comments: ------------------------------------------------------------------------ [2004-10-28 11:02:46] lunter at interia dot pl Description: ------------ Imagecopyresampled function bug: Original image: Any one-color square. After resized (reduce 1 pixel width and heihgt): Two colors square with noise !!! Example with PHP code: http://www.pc44.pl/goorol/ImagecopyresampledBug.zip Reproduce code: --------------- <? $im=imagecreatefrompng('original.png'); // 100x100 one-color square $re=imagecreatetruecolor(99,99); imagecopyresampled($re,$im,0,0,0,0,99,99,imagesx($im),imagesy($im)); imagepng($re,'resized.png'); ?> http://www.pc44.pl/goorol/ImagecopyresampledBug.zip Expected result: ---------------- One-color 99x99 square. Actual result: -------------- Two-colors with NOISE 99x99 square. Example with PHP code: http://www.pc44.pl/goorol/ImagecopyresampledBug.zip ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=30595&edit=1