请问如何实现“定时器添加和删除放在同一个进程”

$worker = new Worker("frame://127.0.0.1:1234");
$worker->onMessage = function($connection, $data) {
  $cmd = json_decode($data, true);
  if ($cmd) {
    Timer::add(...);
  } else if ($cmd) {
    Timer::del(...);
  }
};