Bug #79622 [Nab]: Imagewbmp outputs an white image with something incomprehensible.

Edit report at https://bugs.php.net/bug.php?id=79622&edit=1 ID: 79622 Updated by: requinix@php.net Reported by: cretu dot andrei at zoho dot com Summary: Imagewbmp outputs an white image with something incomprehensible. Status: Not a bug Type: Bug Package: *Graphics related Operating System: Windows 7, X64 PHP Version: Irrelevant Block user comment: N Private report: N New Comment: If I load your source image into GIMP and have it convert the image to monochrome, which it does so in a smart way using dithering that GD cannot do, then save and convert with PHP, I get https://easyupload.io/b86xdf Previous Comments: ------------------------------------------------------------------------ [2020-05-23 06:21:12] requinix@php.net WBMPs. Are. Only. Black. And. White. Most of your source image is light colored. It will be translated into white. The small portions that are dark will be translated into black. ------------------------------------------------------------------------ [2020-05-23 06:12:33] cretu dot andrei at zoho dot com Have you tested the code ? Here is the original image: https://ibb.co/WyRngKD Here is the result: https://easyupload.io/9r4ka6 Is that ok ? ------------------------------------------------------------------------ [2020-05-23 05:49:45] requinix@php.net WBMPs only do black and white. ------------------------------------------------------------------------ [2020-05-23 03:43:03] cretu dot andrei at zoho dot com Description: ------------ I'm using imagecreatefromjpeg to create an image from a source. Then I'm using imagewbmp to save it as .wbmp. The image saved is 98% white with a small portion black. Test script: --------------- $image_object = imagecreatefromjpeg('http://i.pinimg.com/originals/5b/97/49/5b9749c4db7066138b085b28a229801f.jpg'); imagewbmp($image_object, 'new_image.wbmp'); Expected result: ---------------- A black and white image. Actual result: -------------- I see an image allmost white... ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=79622&edit=1