[CentOS] access to file system through web browser

> I am trying to find "something" (php prefered) that I can stick onto a
> Centos apache server that would allow me to browse a selected file system
> by employees through a web-browser "explorer like" interface.

AjaXplorer is a mature and pretty well supported web files explorer,
with plugins for various authentications and backends:
http://www.ajaxplorer.info/