Enter your name and age below, hit "Go!", and within milliseconds a beautiful birthday button will be created for you! Your button will be displayed as a .png image. Right click and you can copy and paste, or save the image to print it out at whatever size you wish!
This is a free service! Your name and age will not be recorded!
But seriously, this is just proof of concept. You can use PHP to create images as .pngs. Therefore a Mandelbrot or Koch is only a program away ...