note 68253 deleted from ref.image by tularis

Note Submitter: g8z at yahoo dot com ---- <?php /** change_color replaces $old_color with $new_color. $threshold allows you to specify how far away from the specified color a pixel can be and still be considered a match. $old_color and $new_color must be decimal color values. Courtesy of the $5 Script Achive: http://www.tufat.com */ function change_color($image, $old_color, $new_color, $threshold = 15) { $image_width = imagesx($image); $image_height = imagesy($image); // iterate through x axis for ($x = 0; $x < $image_width; $x++) { // iterate through y axis for ($y = 0; $y < $image_height; $y++) { // look at current pixel $pixel_color = imagecolorat($image, $x, $y); if (($pixel_color <= $old_color + $threshold) && ($pixel_color >= $old_color - $threshold)) { // replace with new color imagesetpixel($image, $x, $y, $new_color); } } } } // EXAMPLE: // convert all red in the image to green $image = imagecreatefromjpeg('./test.jpg'); $red_rbg = 16646146; $green_rbg = 65341; change_color($image, $red_rbg, $green_rbg, 15); imagejpeg($image, './test_changed.jpg'); ?>