public function curl_post($url , $data=array()){

        $ch = curl_init();

        curl_setopt($ch, CURLOPT_URL, $url);

        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);

        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);

        // POST数据

        curl_setopt($ch, CURLOPT_POST, 1);

        // 把post的变量加上

        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);

        $output = curl_exec($ch);

        curl_close($ch);

        return $output;

    }