The PHP DNS Query is a GPL set of PHP classes providing a direct domain name service API. Originally developed to be a testing module for the FreeNATS network monitor I decided to package it up as a standalone API as well.
Although there are plenty of other DNS classes/clients out there I found them to either be too overblown or actually non-functional. This API is intended to be a half-way house offering direct to-server queries, the ability to process the response in detail but still with a simple interface for the programmer.
The software is provided on an "as-is" basis without warranty or liability of any kind under the GNUGeneral Public Licence (GPL) (version 3 or later at your discretion).
Errata & Bugs
These should be reported via a post on the support forum.