1<?php 2$cluster = new \Couchbase\Cluster('couchbase://localhost?fetch_mutation_tokens=true'); 3$bucket = $cluster->openBucket('default'); 4 5$doc = $bucket->upsert("foo", ['answer' => 42]); 6$mutationState = \Couchbase\MutationState::from($doc); 7 8$query = \Couchbase\N1qlQuery::fromString("SELECT * FROM `default` WHERE answer=42"); 9$result = $query->consistentWith($mutationState); 10// the $result should contain information from "foo"