This PHP SDK is for the PredictionIO machine learning server. PredictionIO's predictive engine API is built on the following open source stack: Apache Spark, HBase and Spray and uses DASE the "MVC" for machine learning. Note that use of this SDK requires PHP 5.4 or higher, PHP: cURL, Phing, and ApiGen. In addition, this SDK only supports Prediction IO version 0.8.2 or higher.
The news of Yahoo's deal to use Microsoft's Bing for search at best has some standing vigil over BOSS and SearchMonkey (our profiles of the BOSS API and Yahoo Search API). At worst, many are already calling the services dead.