message: Fix extends in low PHP version.
diff: @@ -15,7 +15,7 @@ class swoole_invalid_mysql_coro extends \Swoole\Coroutine\MySQL
  // miss parent::__construct
  }
  - public function connect($server_config)
  + public function connect(array $server_config)
  {
  // miss parent::connect
  return true;
  