Value Objects and Data Access Objects with PHP 4.2.x
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Description: The purpose of a Value Object is to represent a business entity. In it's simplest form, a VO is a simple data mapping class that mirrors the entity as it exists in the database. A more complex VO may incorporate other functionality in its methods. For example, a VO may have a method that transforms it's data into an XML node or a VO may be able to read it's data from an HTML form. The one thing the VO doesn't have to worry about is the database. The main purpose of the VO is to store data as the data comes in and out of the database.
