DAO vs ActiveRecord

There are a lot of discussions about DAO/DataMapper & ActiveRecord. Here are some articles:

http://codeutopia.net/blog/2009/01/05/decoupling-models-from-the-database-data-access-object-pattern-in-php/

http://weierophinney.net/matthew/archives/202-Model-Infrastructure.html

Another article about PHP DAO

Decoupling models from the database: Data Access Object pattern in PHP

http://codeutopia.net/blog/2009/01/05/decoupling-models-from-the-database-data-access-object-pattern-in-php/