--TEST-- imagecolormatch --SKIPIF-- <?php if (!function_exists('imagecolormatch')) die("skip gd extension not available\n"); ?> --FILE-- <?php $im = imagecreatetruecolor(5,5); $im2 = imagecreate(5,5); imagecolormatch($im, $im2); echo "ok\n"; imagedestroy($im); ?> --EXPECTF-- Warning: imagecolormatch(): Image2 must have at least one color in %s on line %d ok