Client.php

/**
     * @return bool
     */
    public function close()
    {
        $result = TRUE;
        if ($this->connected && !$this->persistent) {
            try {
                $result          = $this->standalone ? fclose($this->redis) : $this->redis->close();
                $this->connected = FALSE;
            } catch (Exception $e) {
                ; // Ignore exceptions on close
            }
        }
        return $result;
    }