PHP Redis Model: CRUD operations to store and retrieve in Redis

This class implements CRUD operations to store and retrieve model data in Redis.

It connect to a Redis server and excutes create, read, update and delete operations to access data objects stored in a Redis instance.

The class implements __set and __get function so model data objects may have arbitrary variable names and values.

It can get individual data objects by primary key or all data objects at once of a given table name.