imagepolygon Draw a polygon intimagepolygon resourceimage arraypoints intnum_points intcolor imagepolygon creates a polygon in image id. points is a PHP array containing the polygon's vertices, i.e. points[0] = x0, points[1] = y0, points[2] = x1, points[3] = y1, etc. num_points is the total number of points (vertices). ]]> See also imagecreate and imagecreatetruecolor.