Google\Cloud\Datastore\Connection\ConnectionInterface::runQuery PHP Method

    public function runQuery(array $args);

 /**
  * Run a query and return entities
  *
  * @param QueryInterface $query The query object.
  * @param array $options [optional] {
  *     Configuration Options
  *
  *     @type string $transaction The transaction ID, if the query should be
  *           run in a transaction.
  *     @type string $className The name of the class to return results as.
  *           Must be a subclass of {@see Google\Cloud\Datastore\Entity}.
  *           If not set, {@see Google\Cloud\Datastore\Entity} will be used.
  *     @type string $readConsistency See
  *           [ReadConsistency](https://cloud.google.com/datastore/reference/rest/v1/ReadOptions#ReadConsistency).
  * }
  * @return \Generator<Google\Cloud\Datastore\Entity>
  */
 public function runQuery(QueryInterface $query, array $options = [])
 {
     $options += ['className' => null, 'namespaceId' => $this->namespaceId];
     $moreResults = true;
     do {
         $request = $options + $this->readOptions($options) + ['projectId' => $this->projectId, 'partitionId' => $this->partitionId($this->projectId, $options['namespaceId']), $query->queryKey() => $query->queryObject()];
         $res = $this->connection->runQuery($request);
         if (isset($res['batch']['entityResults']) && is_array($res['batch']['entityResults'])) {
             $results = $this->mapEntityResult($res['batch']['entityResults'], $options['className']);
             foreach ($results as $result) {
                 (yield $result);
             }
             if ($query->canPaginate() && $res['batch']['moreResults'] === 'NOT_FINISHED') {
                 $query->start($res['batch']['endCursor']);
             } else {
                 $moreResults = false;
             }
         } else {
             $moreResults = false;
         }
     } while ($moreResults);
 }