On the PHPBuilder.com site today there's a new tutorial talking about using PHP to dynamically create SVG images in a simple application.

As with many of the pages on my Web site, my SVG images are in fact generated by PHP scripts. I end up including many of the same images in other pages, but not always with the same size or colors, so making them customizable on a case-by-case basis is a useful thing. Attributes such as size, scale, colour, rotation, and position are obtained from arguments in the URL.

His example creates a SVG image using a class (UIControl) to create the content for the image. This content is dropped into the typical XML structure to display it. He also includes some extra attributes/methods you can use with the UIControl class to alter the resulting image.