Fox filter: Filter redundant MySQL database query results

This class is meant to filter redundant MySQL database query results that be returned when querying three tables that establish many-to-many relationships.

The class' function named out_put returns an associative a two dimenstional array of records. It may either return a list of the filtered results indexed numerically, or as an associative array. The associative array index values are the names of the fields in the SQL statement of the first table, while the numerically indexed uses other fields.