Need PHP Script to Create Ratings system for a website

I'm using a wordpress site for a ratings website for hotels. Tho I can use a wordpress plugin I would like to use a PHP module to do the work. I think it would be a good thing to have the ratings go into my db for averages, historical, etc. Does anyone know where I can pick up such a script? Doesn't have to be out of the box ready, just need a guideline.
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Julian HansenCommented:
What distinction are you making between a PHP module and a WP pluggin - both are essentially PHP modules.
Ray PaseurCommented:

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