问个关于数组的问题

Question

问个很简单的问题，小弟刚看php，边学边做，有些对大家来说很轻而易举，很简单的东西，小弟可能一直摸不着头绪我想取得图中那些红线里的值，应该怎么做？谢谢大家的指点。

Answer 1

已授权用户信息：-------------------------------
SimpleXMLElement Object
(
    [data] => SimpleXMLElement Object
        (
            [curnum] => 17
            [hasnext] => 1
            [info] => Array
                (
                    [0] => SimpleXMLElement Object
                        (
                            [city_code] => 13
                            [country_code] => 1
                            [fansnum] => 116
                            [head] => http://app.qlogo.cn/mbloghead/0e6407ec9d1956e94fc4
                            [https_head] => https://app.qlogo.cn/mbloghead/0e6407ec9d1956e94fc4
                            [idolnum] => 230
                            [isfans] => true
                            [isidol] => true
                            [isrealname] => 1
                            [isvip] => 0
                            [location] => 中国 广东 惠州
                            [name] => ivy543693672
                            [nick] => ivy
                            [openid] => 89736E5CF42BE3563CC9344744CEECB6
                            [province_code] => 44
                            [sex] => 2
                            [tag] => Array
                                (
                                    [0] => SimpleXMLElement Object
                                        (
                                            [id] => 229932304883939539
                                            [name] => 我是新国货
                                        )                                    [1] => SimpleXMLElement Object
                                        (
                                            [id] => 3274154839212534452
                                            [name] => 微博控
                                        )                                    [2] => SimpleXMLElement Object
                                        (
                                            [id] => 3428083006598920604
                                            [name] => 上网
                                        )                                    [3] => SimpleXMLElement Object
                                        (
                                            [id] => 3983359874049164460
                                            [name] => 宅女
                                        )                                    [4] => SimpleXMLElement Object
                                        (
                                            [id] => 12323892526972733886
                                            [name] => 宅
                                        )                                    [5] => SimpleXMLElement Object
                                        (
                                            [id] => 12785778694387446867
                                            [name] => 美容
                                        )                                    [6] => SimpleXMLElement Object
                                        (
                                            [id] => 12994863187715418512
                                            [name] => 大大咧咧
                                        )                                    [7] => SimpleXMLElement Object

Answer 2

$b=Tencent::api("friends/fanslist",
array( "format" => "xml", "reqnum" => "20", "startindex" => "0", "mode" => "0", "install" => "0", "sex" => "0")
,"get",false);
$cc=(json_decode($b,true));
echo"<br>";
echo"-------------------------------";
echo'<br>';
$xml=simplexml_load_string($cc);
print_r($xml);
echo '<br>';
echo '-----------------------------------------';
echo $xml['curnum'];

Answer 3

echo $xml->data->info[0]->location;
echo $xml->data->info[0]->tag[0]->name;或用 xpat 方法，大致如是
echo $xml->xpath('//info/location')->itme(0);
echo $xml->xpath('//info/tag/name')->itme(0);