mime-database topic

Powerful and versatile MIME sniffing package using pre-compiled glob patterns, magic number signatures, XML document namespaces, and tree magic for mounted volumes, generated from the XDG shared-mime-...

zRedShift

Find the mime type of files, examining file, filename and declared type

chaskiq

A simple Mime type getter

data-uri

A PHP library to handle MIME Content-Type fields and their related file extensions.

FileEye