CJSONDeserializer deserializer

Question

Hi.. I hve code like this: NSDictionary * dict = [[CJSONDeserializer deserializer] deserializeAsDictionary:jsonData error:&error];

i hve 2 php calling method coding is same for both. it retrieves for 1st php where as 2nd is dict 0 pair key/value , also it shows jsonstring in console. i dont know why dict is null,may be CJSONDeserializer deserializer problem... anybody help me... Thank u.