WaldScan is a PHP class which recursively scans a given directory for a list of selected file types. It has many uses for any Web page which serves files over HTTP/HTTPS, for a CLI program which does batch processing of files, or in cron jobs for caching file data for faster access.
pdirl (PHP Directory Listing) is a tiny directory lister program. It is meant to be better looking and more useful than the directory listings produced by Apache. It features searching, directory listing in subdirectories, breadcrumb navigation, translations, and MIME-type detection. It requires PHP 5.