Descriptionint imageellipse ( resource image, int cx, int cy, int w, int h, int color)
imageellipse() draws an ellipse centered at cx, cy (top left is 0, 0) in the image represented by image. W and h specifies the ellipse's width and height respectively. The color of the ellipse is specified by color.
Note: This function was added in PHP 4.0.6 and requires GD 2.0.2 or later which can be obtained at http://www.boutell.com/gd/
See also imagearc().