例如第一次发送1,第二次发送2 ,第二次客户端接受的就是 12
```php
public function sendMessageByUid($clientId, $message)
{
global$worker;
if(isset($worker->uidConnections))
{
Log::info('发送成功');
$connectionLog::info($message);
$connection->send($message,true);
}else{
Log::info('发送失败