Bug #64898 [Asn]: imagerotate is broken

Edit report at https://bugs.php.net/bug.php?id=64898&edit=1 ID: 64898 Updated by: pajoye@php.net Reported by: douglas dot wright at pre-school dot org dot uk Summary: imagerotate is broken Status: Assigned Type: Bug Package: GD related Operating System: Windows 7 PHP Version: 5.5.0RC1 Assigned To: pajoye Block user comment: N Private report: N New Comment: Reproduced. Have to figure out what went wrong lately with the bilinear interpolation and the rotate function. As a work around, add: imagesetinterpolation($source, IMG_BICUBIC_FIXED); // or any prefered algorithm before the imagerotate call. Previous Comments: ------------------------------------------------------------------------ [2013-05-22 12:54:56] douglas dot wright at pre-school dot org dot uk Sure, the one I used in the testcase is https://www.pre-school.org.uk/publicationimage/236/thumbnail/?size=200 ------------------------------------------------------------------------ [2013-05-22 12:46:46] pajoye@php.net Do you have the original image please? You can use tinypic too but I need the original images. ------------------------------------------------------------------------ [2013-05-22 10:43:55] douglas dot wright at pre-school dot org dot uk Description: ------------ When attempting to rotate an image using PHP5.5RC1, the output is corrupted. This is a regression from latest stable PHP 5.4 Test script: --------------- <?php $source = imagecreatefrompng('original.png'); $rotate = imagerotate($source, 45, imagecolorallocate($source,255,255,255)); imagepng($rotate, 'rotated.png'); Expected result: ---------------- Please see comparison screenshot at http://tinypic.com/r/34t8qdu/5 Actual result: -------------- Please see comparison screenshot at http://tinypic.com/r/34t8qdu/5 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=64898&edit=1