note 78726 added to function.imagecolorallocate

When working on an existant GIF images, if the number of different colours has reached the limits of the GIF format, imagecolorallocate will not use to the colour you ask her within the parameters, she will apply black ! That's a problem when generating images "on-the-fly" with many manipulations, from a GIF image. To go round the problem, you have to convert the GIF image into a PNG one, and then you can work on the PNG and everything will be ok. For example : <?php // first, convert into a PNG image $handle = imagecreatefromgif('my_image.gif'); imagepng($handle, 'my_image.png'); imagedestroy($handle); // then, you can work on it $handle = imagecreatefrompng('my_image.png'); /* * work on the image */ imagegif($handle); ?> ---- Server IP: 217.174.196.197 Probable Submitter: 85.68.236.192 ---- Manual Page -- http://www.php.net/manual/en/function.imagecolorallocate.php Edit -- https://master.php.net/note/edit/78726 Del: integrated -- https://master.php.net/note/delete/78726/integrated Del: useless -- https://master.php.net/note/delete/78726/useless Del: bad code -- https://master.php.net/note/delete/78726/bad+code Del: spam -- https://master.php.net/note/delete/78726/spam Del: non-english -- https://master.php.net/note/delete/78726/non-english Del: in docs -- https://master.php.net/note/delete/78726/in+docs Del: other reasons-- https://master.php.net/note/delete/78726 Reject -- https://master.php.net/note/reject/78726 Search -- https://master.php.net/manage/user-notes.php