php - 按值获取 stdClass 对象

Question

鉴于此 stdClass 结构...

[RecentAchievements] => stdClass Object
    (
        [1446] => stdClass Object
           (
               [3319] => stdClass Object
                   (
                       [ID] => 3319
                       [GameID] => 1446
                       [Title] => Hello World!
                       [Description] => Complete World 1-1
                       [Points] => 15
                       [BadgeName] => 03909
                       [IsAwarded] => 1
                       [DateAwarded] => 2013-10-20 19:35:46
                   )

我需要检查 3319 中的对象，比如“标题”，所以它会像:

$data->RecentAchievements->$gameid->ACHVIDHERE->Title;

要获取 $gameid，它来自其他对象 (RecentlyPlayed)，这样:

[RecentlyPlayed] => Array
    (
        [0] => stdClass Object
            (
                [GameID] => 1446
                [ConsoleID] => 7
                [ConsoleName] => NES
                [Title] => Super Mario Bros
                [LastPlayed] => 2013-10-20 21:38:22
                [ImageIcon] => /Images/000385.png
                [ImageTitle] => /Images/000272.png
                [ImageIngame] => /Images/000387.png
                [ImageBoxArt] => /Images/000275.png
            )

    )

$gameid = $data3->RecentlyPlayed['0']->GameID;

API 不允许我使用相同的 RecentlyPlayed 来获取成就 ID，我必须从 RecentAchievements 中提取它。可能吗？

Answer 1

如果您只是想获得该特定游戏的第一个成就，您可以使用此 hack:

$firstAchievement = reset($data->RecentAchievements->$gameid);
$title = $firstAchievement->Title;

API 可能给你一个 JSON 响应，所以你可能还想考虑这个:

$data = json_decode($response, true);
                               ^^^^

第二个参数 true 将 JavaScript 对象转换为 PHP 数组，这在大多数情况下更容易处理它们，例如

$firstAchievement = reset($data['RecentAchievements'][$gameid]);
$title = $firstAchievement['Title'];