class Server {
  const PORT = 8811;
  /**
   * 获取端口指定端口信息;如果在运行返回1；否则返回0；
   */
  public function port() {
    $shell = "netstat -anp 2>/dev/null | grep ". self::PORT . " | grep LISTEN | wc -l";
    $result = shell_exec($shell);
    if($result != 1) {
      // 发送报警服务 邮件 短信
      /// todo
      echo date("Ymd H:i:s")."error".PHP_EOL;
    } else {
      echo date("Ymd H:i:s")."succss".PHP_EOL;
    }
  }
}
/**
 * swoole毫秒定时器；每隔2秒运行一下脚本
 */
swoole_timer_tick(2000, function($timer_id) {
  (new Server())->port();
  echo "time-start".PHP_EOL;
});

echo "loading..."
pid=`pidof live_master`
echo $pid
kill -USR1 $pid
echo "loading success"