It is good to know of this site, where I find a good PHP photo gallery script.
Glad to recommend to you.
minishowcase is a small and simple PHP/Javascript online photo gallery, powered by AJAX that allows you to easily show your images online, without complex dababases or coding, allowing to have an up-and-running gallery in a few minutes.
More free PHP Image galleryscripts you can check out the site.
Hopefully can help you