php curl函数问题

我的代码中有旋度函数的troble。我的CURLINFO\u HTTP\u代码在使用时始终返回0 curl_error（$ch）返回“无法到达主机”。我的主机是ispeech，它应该不会有问题。这里有人能帮我吗？非常感谢

iSpeech.php

   class iSpeechBase{
        var $server;
        var $parameters = array("device-type"=>"php-SDK-0.3");

       function setParameter($parameter, $value){
            if ($parameter == "server")
                $this->server = $value;
            else
                $this->parameters["$parameter"] = $value;
        }

        function makeRequest(){
            $ch = curl_init();
            $url=$this->server . "/?" . http_build_query($this->parameters);

            curl_setopt($ch, CURLOPT_URL, $url);
            curl_setopt($ch, CURLOPT_HEADER, 0);
            curl_setopt($ch, CURLOPT_TIMEOUT, 5);

            ob_start();

            echocurl_exec($ch);
            $http_body = ob_get_contents();
            ob_end_clean();

            echo curl_getinfo($ch, CURLINFO_HTTP_CODE); //return 0
            echo curl_error($ch); //return Could not reach host.

            if (curl_getinfo($ch, CURLINFO_HTTP_CODE) != 200)

                if ($this->parameters["action"] == "convert")

                    return array("error" => $http_body);

            return $http_body;
        }
   }

synthesis-demo.php

require_once('ispeech.php');

  $SpeechSynthesizer = new SpeechSynthesizer();
  $SpeechSynthesizer->setParameter("server", "http://api.ispeech.org/api/rest");
  $SpeechSynthesizer->setParameter("apikey", "myapikey");
  $SpeechSynthesizer->setParameter("text", "yes");
  $SpeechSynthesizer->setParameter("format", "wav");
  $SpeechSynthesizer->setParameter("voice", "usenglishfemale");
  $SpeechSynthesizer->setParameter("output", "rest");
  $result = $SpeechSynthesizer->makeRequest();

---

所以，省得用ob缓冲区胡闹，你可以替换它

ob_start(); 

echocurl_exec($ch); 
$http_body = ob_get_contents(); 
ob_end_clean(); 

与

---

还将示例中缺少的echo和curl_exec之间的空格添加到函数makeRequest中的语句

$url=$this->server之后（尽管这会引发致命错误并停止执行-您有自己的错误处理程序吗？
）。"/?" . http\u build\u查询（$this->parameters），什么是
变量转储（$url）显示？还要确保您的服务器正确解析了
api.ispeech.org
，并且没有防火墙阻止curl请求。您需要在
echo
和
curl\u exec（）之间留出一个空间
$http_body = curl_exec($ch);