PHP高级JSON代码

如何从这个JSON代码获取PHP“1837”？谁能帮帮我，我不明白（因为有超过1个“countHint”，我无法获得“1837”值

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您可以将JSON数据解码为PHP数组或对象，然后使用普通的PHP数组函数按特定值进行过滤（后面的解释已经足够多了）

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正如feela所描述的使用json_解码一样，这里是完整的代码：D

$json = '{
    "gd$feedLink": [
        {
            "rel": "http://gdata.youtube.com/schemas/2007#user.subscriptions",
            "href": "http://gdata.youtube.com/feeds/api/users/pewdiepie/subscriptions?v=2",
            "countHint": 68
        },
        {
            "rel": "http://gdata.youtube.com/schemas/2007#user.liveevent",
            "href": "http://gdata.youtube.com/feeds/api/users/pewdiepie/live/events?v=2",
            "countHint": 0
        },
        {
            "rel": "http://gdata.youtube.com/schemas/2007#user.favorites",
            "href": "http://gdata.youtube.com/feeds/api/users/pewdiepie/favorites?v=2",
            "countHint": 795
        },
        {
            "rel": "http://gdata.youtube.com/schemas/2007#user.contacts",
            "href": "http://gdata.youtube.com/feeds/api/users/pewdiepie/contacts?v=2",
            "countHint": 9915
        },
        {
            "rel": "http://gdata.youtube.com/schemas/2007#user.inbox",
            "href": "http://gdata.youtube.com/feeds/api/users/pewdiepie/inbox?v=2"
        },
        {
            "rel": "http://gdata.youtube.com/schemas/2007#user.playlists",
            "href": "http://gdata.youtube.com/feeds/api/users/pewdiepie/playlists?v=2"
        },
        {
            "rel": "http://gdata.youtube.com/schemas/2007#user.uploads",
            "href": "http://gdata.youtube.com/feeds/api/users/pewdiepie/uploads?v=2",
            "countHint": 1837
        },
        {
            "rel": "http://gdata.youtube.com/schemas/2007#user.newsubscriptionvideos",
            "href": "http://gdata.youtube.com/feeds/api/users/pewdiepie/newsubscriptionvideos?v=2"
        }
    ]
}';

$decoded = json_decode($json,true);

foreach ($decoded['gd$feedLink'] as $item  ){
    if( isset($item['countHint']) && $item['countHint']=='1837'){
        echo $item['rel']."<br/>";
        echo $item['href']."<br/>"; 
        echo $item['countHint']."<br/>";

    }

}

$json=”{
“gd$feedLink”：[
{
“rel”：http://gdata.youtube.com/schemas/2007#user.subscriptions",
“href”：”http://gdata.youtube.com/feeds/api/users/pewdiepie/subscriptions?v=2",
“countHint”：68
},
{
“rel”：http://gdata.youtube.com/schemas/2007#user.liveevent",
“href”：”http://gdata.youtube.com/feeds/api/users/pewdiepie/live/events?v=2",
“countHint”：0
},
{
“rel”：http://gdata.youtube.com/schemas/2007#user.favorites",
“href”：”http://gdata.youtube.com/feeds/api/users/pewdiepie/favorites?v=2",
“countHint”：795
},
{
“rel”：http://gdata.youtube.com/schemas/2007#user.contacts",
“href”：”http://gdata.youtube.com/feeds/api/users/pewdiepie/contacts?v=2",
“countHint”：9915
},
{
“rel”：http://gdata.youtube.com/schemas/2007#user.inbox",
“href”：”http://gdata.youtube.com/feeds/api/users/pewdiepie/inbox?v=2"
},
{
“rel”：http://gdata.youtube.com/schemas/2007#user.playlists",
“href”：”http://gdata.youtube.com/feeds/api/users/pewdiepie/playlists?v=2"
},
{
“rel”：http://gdata.youtube.com/schemas/2007#user.uploads",
“href”：”http://gdata.youtube.com/feeds/api/users/pewdiepie/uploads?v=2",
“countHint”：1837年
},
{
“rel”：http://gdata.youtube.com/schemas/2007#user.newsubscriptionvideos",
“href”：”http://gdata.youtube.com/feeds/api/users/pewdiepie/newsubscriptionvideos?v=2"
}
]
}';
$decoded=json_decode（$json，true）；
foreach（$gd$feedLink']解码为$item）{
如果（isset（$item['countHint']）&&$item['countHint']=='1837'）{
echo$item['rel']。“
”；
echo$item['href']。“
”；
echo$item['countHint']。“
”；
}
}

不，不是。但是这样的问题已经回答了好几次，而且在发布这个问题之前，你似乎还没有使用过搜索引擎。我想，这就是投票结果不佳的原因……堆栈溢出奖励了大量的研究，并展示了你之前在问题上的尝试。辅导请求和点名并不多。

$json = '{ "gd$feedLink":[ … ] }';
$phpArray = json_decode( $json, true );

$json = '{
    "gd$feedLink": [
        {
            "rel": "http://gdata.youtube.com/schemas/2007#user.subscriptions",
            "href": "http://gdata.youtube.com/feeds/api/users/pewdiepie/subscriptions?v=2",
            "countHint": 68
        },
        {
            "rel": "http://gdata.youtube.com/schemas/2007#user.liveevent",
            "href": "http://gdata.youtube.com/feeds/api/users/pewdiepie/live/events?v=2",
            "countHint": 0
        },
        {
            "rel": "http://gdata.youtube.com/schemas/2007#user.favorites",
            "href": "http://gdata.youtube.com/feeds/api/users/pewdiepie/favorites?v=2",
            "countHint": 795
        },
        {
            "rel": "http://gdata.youtube.com/schemas/2007#user.contacts",
            "href": "http://gdata.youtube.com/feeds/api/users/pewdiepie/contacts?v=2",
            "countHint": 9915
        },
        {
            "rel": "http://gdata.youtube.com/schemas/2007#user.inbox",
            "href": "http://gdata.youtube.com/feeds/api/users/pewdiepie/inbox?v=2"
        },
        {
            "rel": "http://gdata.youtube.com/schemas/2007#user.playlists",
            "href": "http://gdata.youtube.com/feeds/api/users/pewdiepie/playlists?v=2"
        },
        {
            "rel": "http://gdata.youtube.com/schemas/2007#user.uploads",
            "href": "http://gdata.youtube.com/feeds/api/users/pewdiepie/uploads?v=2",
            "countHint": 1837
        },
        {
            "rel": "http://gdata.youtube.com/schemas/2007#user.newsubscriptionvideos",
            "href": "http://gdata.youtube.com/feeds/api/users/pewdiepie/newsubscriptionvideos?v=2"
        }
    ]
}';

$decoded = json_decode($json,true);

foreach ($decoded['gd$feedLink'] as $item  ){
    if( isset($item['countHint']) && $item['countHint']=='1837'){
        echo $item['rel']."<br/>";
        echo $item['href']."<br/>"; 
        echo $item['countHint']."<br/>";

    }

}