When encoding PHP objects as JSON, all public properties of that object will be encoded in a JSON object.
JSON does not allow object references, so care should be taken not to
encode objects with recursive references. If you have issues with
Zend_Json_Encoder::encode() allow an optional second
parameter to check for recursion; if an object is serialized twice, an
exception will be thrown.
Zend_Json will decode JSON objects as
associative arrays. However, if you desire an object returned, you can
Any objects thus decoded are returned as
StdClassobjects with properties corresponding to the key/value pairs in the JSON notation.
The recommendation of the Zend Framework is that the individual developer should decide how to decode JSON objects. If an object of a specified type should be created, it can be created in the developer code and populated with the values decoded using