hi,

all is in the title :
it seems function printGalleryIndexURL is missing in zenphoto documentation.

If you mean the generated online documentation, that might be as sadly the script used to generate it does not work properly anymore currently. We will surely have some updated and generated documetation sometime in the future.

The same documentation is always within the files itself and if using a proper development tools like Netbeans, Eclipse or similar you can also access it quite conveniently.