PEAR::MIME_Type provides functionality for dealing with MIME types.

* Parse MIME type.
* Supports full RFC2045 specification.
* Many utility functions for working with and determining info about types.
* Most functions can be called statically.
* Autodetect a file's mime-type, either with mime_content_type() or the 'file'
command.

WWW: http://pear.php.net/package/MIME_Type/