问php后台获取短信回复？

use Qcloud\Sms\SmsStatusPuller;

try {
    $sspuller = new SmsStatusPuller($appid, $appkey);

    // 拉取短信回执
    $callbackResult = $spuller->pullCallback(10);
    $callbackRsp = json_decode($callbackResult);
    echo $callbackResult;

    // 拉取回复
    $replyResult = $spuller->pullReply(10);
    $replyRsp = json_decode($replyResult);
    echo $replyResult;
} catch (\Exception $e) {
    echo var_dump($e);
}