note 31271 added to function.imagecolorallocate

I was unable to get any of the posted methods for converting colour to grayscale to work. The problem appears to be the way gd creates images from jpeg inconsistently over various versions. Eventually I wrote my own that works for me - this approach allocates the 256 color pallete first. You can also play with separate $r, $g, $b variables before using imagecolorallocate in order to tone or tint the image. $resource = 'whatever.jpg'; $im_size = GetImageSize($resource); $imageWidth = $im_size[0]; $imageHeight = $im_size[1]; $im = imageCreate($imageWidth,$imageHeight); for ($c = 0; $c < 256; $c++) { ImageColorAllocate($im, $c,$c,$c); } $im2 = ImageCreateFromJpeg($resource); ImageCopyMerge($im,$im2,0,0,0,0, $imageWidth, imageHeight, 100); ImageDestroy($im2); go on using $im as your image, it is now grayscale .... -- http://www.php.net/manual/en/function.imagecolorallocate.php http://master.php.net/manage/user-notes.php?action=edit+31271 http://master.php.net/manage/user-notes.php?action=delete+31271 http://master.php.net/manage/user-notes.php?action=reject+31271