The following changes have been made to classes/functions/methods of this extension.
MongoDB PHP Driver 1.3.0
The 1.3 series introduced several major changes to the extension such as completely rewritten connection handling (and removal of the pooling mechanism), support for ReadPreferences and change the default WriteConcerns to be acknowledged by introducing a new class MongoClient which serves as a replacement class for the now deprecated Mongo class.
The driver now also supports connecting to multiple mongos instances (the Mongo Shard router) for loadbalancing.
Changes to existing methods
Following is a list of all improvements to existing methods since their inception.