This is a simple PHP script that can be used to generate a banner image by grabbing 10 random images out of a folder and using imagemagick's convert command to create the image. It can be easily configured to grab more or less images. The banner image will probably look best if the images are all of equal height, thus in the script I run a check on the diminsions first.
The utility requires that ImageMagick be installed and the web server has access to the 'convert' command. Once you have downloaded banner_image_maker_php.zip and unzipped unzipzed the file, rename the file extension to .php from _php, upload it to your webserver. Edit and cofigure it either before uploading or after if you have an editing program on your server.
Reloading the page will generate a new banner image. Enjoy...
A banner image of this sort could be used in a slideshow or perhaps as a background image.