function testAction(){
        $url = 'http://121.239.238.107:5001/ds_portrait';
        $post_data['appid']       = '10';
        $post_data['appkey']      = 'cmbohpffXVR03nIpkkQXaAA1Vf5nO4nQ';
        $post_data['member_name'] = 'zsjs123';
        $post_data['password']    = '123456';
        $post_data['email']    = 'zsjs123@126.com';
        $o = "";
        foreach ( $post_data as $k => $v )
        {
            $o.= "$k=" . urlencode( $v ). "&" ;
        }
        $post_data = substr($o,0,-1);
 
        $res = $this->request_post($url, $post_data);      
        print_r($res);
 
    }