foreach取得stdClass物件 - Thinbug

Question

以下是取得到的圖文newsJSON數據，請問foreach如何取得到如title、author、digest等這些值呢？

stdClass Object
(
    [item] => Array
        (
            [0] => stdClass Object
                (
                    [media_id] => media_id1
                    [content] => stdClass Object
                        (
                            [news_item] => Array
                                (
                                    [0] => stdClass Object
                                        (
                                            [title] => 标题1
                                            [author] => 作者1
                                            [digest] => 摘要1
                                            [content] => 内容1
                                            [content_source_url] =>
                                            [thumb_media_id] => media_id1
                                            [show_cover_pic] => 0
                                            [url] => http://mp.weixin.qq.com/
                                            [thumb_url] => http://mmbiz.qpic.cn/mmbiz/jpeg
                                            [need_open_comment] => 0
                                            [only_fans_can_comment] => 0
                                        )
                                )
                            [create_time] => 1438240064
                            [update_time] => 1438307092
                        )
                    [update_time] => 1438307092
                )
            [1] => stdClass Object
                (
                    [media_id] => media_id2
                    [content] => stdClass Object
                        (
                            [news_item] => Array
                                (
                                    [0] => stdClass Object
                                        (
                                            [title] => 标题2
                                            [author] => 作者2
                                            [digest] => 摘要2
                                            [content] => 内容2
                                            [content_source_url] =>
                                            [thumb_media_id] => media_id2
                                            [show_cover_pic] => 0
                                            [url] => http://mp.weixin.qq.com/
                                            [thumb_url] => http://mmbiz.qpic.cn/mmbiz/jpeg
                                            [need_open_comment] => 0
                                            [only_fans_can_comment] => 0
                                        )
                                )
                            [create_time] => 1438156103
                            [update_time] => 1444380718
                        )
                    [update_time] => 1444380718
                )
                )
    [total_count] => 5
    [item_count] => 4
)

Answer 1

個人建議最好將json字串轉換成數組而不是對象，這樣便於後續操作，也方便閱讀。

mixed json_decode ( string $json [, bool $assoc = false [, int $depth = 512 [, int $options = 0 ]]] )

assoc 當此參數為 TRUE 時，將傳回 array 而非 object 。
試著將json_decode()第二個參數置為true。

Answer 2

假設上面的物件名稱為obj

$data = array();
foreach ($obj->item as $item) {
    $data[] = $item->content->new_item[0];
}
var_dump($data);

Answer 3

雷雷

Answer 4

好好理解@windfly說的,
訪問stdClass Object屬性, 用:

$obj->title;

存取數組屬性用:

$obj['title'];

顯然你取不到, 是用 $obj['title'] 這樣的寫法寫的