note 41842 added to function.imagecolorsforindex

here's a function to greyscale an image even from a truecolor source (jpeg or png). slightly poor quality, but very fast... function imagegreyscale(&$img, $dither=1) { if (!($t = imagecolorstotal($img))) { $t = 256; imagetruecolortopalette($img, $dither, $t); } for ($c = 0; $c < $t; $c++) { $col = imagecolorsforindex($img, $c); $min = min($col['red'],$col['green'],$col['blue']); $max = max($col['red'],$col['green'],$col['blue']); $i = ($max+$min)/2; imagecolorset($img, $c, $i, $i, $i); } } ---- Manual Page -- http://www.php.net/manual/en/function.imagecolorsforindex.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+41842 Delete -- http://master.php.net/manage/user-notes.php?action=delete+41842&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+41842&report=yes Search -- http://master.php.net/manage/user-notes.php