src/ElasticSearch/Transport/Memcached.php
public function search($query) {
        if (is_array($query)) {
            if (array_key_exists("query", $query)) {
                $dsl = new Stringify($query);
                $q = (string) $dsl;
                $url = $this->buildUrl(array(
                    $this->type, "_search?q=" . $q
                ));
                $result = json_decode($this->conn->get($url), true);
                return $result;
            }
            throw new \ElasticSearch\Exception("Memcached protocol doesnt support the full DSL, only query");
        }
        elseif (is_string($query)) {
            /**
             * String based search means http query string search
             */
            $url = $this->buildUrl(array(
                $this->type, "_search?q=" . $query
            ));
            $result = json_decode($this->conn->get($url), true);
            return $result;
        }
    }
public function search($query) {
        if (is_array($query)) {
            if (array_key_exists("query", $query)) {
                $dsl = new Stringify($query);
                $q = (string) $dsl;
                $url = $this->buildUrl(array(
                    $this->type, "_search?q=" . $q
                ));
                $result = json_decode($this->conn->get($url), true);
                return $result;
            }
            throw new \ElasticSearch\Exception("Memcached protocol doesnt support the full DSL, only query");
        }
        elseif (is_string($query)) {
            /**
             * String based search means http query string search
             */
            $url = $this->buildUrl(array(
                $this->type, "_search?q=" . $query
            ));
            $result = json_decode($this->conn->get($url), true);
            return $result;
        }
    }
Search

@return array
@param array|string $query
@throws \ElasticSearch\Exception