//通过curl模拟post的请求；
    public function SendDataByCurl($url,$data=array()){
        //对空格进行转义
        $url = str_replace(' ','+',$url);
        $ch = curl_init();
        //设置选项，包括URL
        curl_setopt($ch, CURLOPT_URL, "$url");
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_HEADER, 0);
        curl_setopt($ch,CURLOPT_TIMEOUT,3); //定义超时3秒钟
        // POST数据
        curl_setopt($ch, CURLOPT_POST, 1);
        // 把post的变量加上
        curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));  //所需传的数组用http_bulid_query()函数处理一下，就ok了
        //执行并获取url地址的内容
        $output = curl_exec($ch);
        $errorCode = curl_errno($ch);
        //释放curl句柄
        curl_close($ch);
        if(0 !== $errorCode) {
            return false;
        }
        return $output;
    }