This is a PHP port of the Moserware.Skills project that's available at

http://github.com/moserware/Skills

For more details on how the algorithm works, see 

http://www.moserware.com/2010/03/computing-your-skill.html

For details on how to use this project, see the accompanying unit tests with this project
Description
An implementation of the TrueSkill algorithm in PHP
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