//curl post函数
    function curlMethod($str, $data){
        $data = urlencode(base64_encode(json_encode($data)));
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $str); //设置链接
        curl_setopt($ch, CURLOPT_POST, 1); //设置为POST方式
        curl_setopt($ch, CURLOPT_POSTFIELDS ,array('data' => $data)); //POST数据
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); //设置是否返回信息
        $server_output = curl_exec($ch); //接收返回信息
        curl_close($ch); //关闭curl链接
        $arr = json_decode($server_output,true);
        return $arr;
    }