php - 正确的json格式？

Question

{
    "categories": [
        {
            "necklaces": [
                { title: "Outlet", url: "W_Outlet" },
                { title: "Baby-G", url: "W_BabyG" },
                { title: "Bulova", url: "W_Bulova" },
                { title: "Children_s", url: "W_Childrens" }
            ]
        }
    ]
}

当我json_decode在 PHP 中使用时，我得到一个空结果，这让我相信 JSON 的格式不正确。

我需要的是：一个名为“类别”的对象，在该对象内部将有一个对象数组，其中有一个对象数组。

ie Category -> [ Necklaces -> { title: 'Gold', url: 'Gold' } ]

等等，但它似乎没有工作。有任何想法吗？

Answer 1

{
    "categories": [
        {
            "necklaces": [
                {
                    "title": "Outlet",
                    "url": "W_Outlet"
                },
                {
                    "title": "Baby-G",
                    "url": "W_BabyG"
                },
                {
                    "title": "Bulova",
                    "url": "W_Bulova"
                },
                {
                    "title": "Children_s",
                    "url": "W_Childrens"
                }
            ]
        }
    ]
}

Answer 2

您的字段名称周围缺少引号。

{
    "categories": [
        {
            "necklaces": [
                { "title": "Outlet", "url": "W_Outlet" },
                { "title": "Baby-G", "url": "W_BabyG" },
                { "title": "Bulova", "url": "W_Bulova" },
                { "title": "Children_s", "url": "W_Childrens" }
            ]
        }
    ]
}

Answer 3

你的title和url必须被引用：

<?php

$json = '{
    "categories": [
        {
            "necklaces": [
                { "title": "Outlet", "url": "W_Outlet" },
                { "title": "Baby-G", "url": "W_BabyG" },
                { "title": "Bulova", "url": "W_Bulova" },
                { "title": "Children_s", "url": "W_Childrens" }
            ]
        }
    ]
}';

$b = json_decode($json);
print_r($b);

?>

结果将是：

stdClass Object
(
    [categories] => Array
        (
            [0] => stdClass Object
                (
                    [necklaces] => Array
                        (
                            [0] => stdClass Object
                                (
                                    [title] => Outlet
                                    [url] => W_Outlet
                                )

                            [1] => stdClass Object
                                (
                                    [title] => Baby-G
                                    [url] => W_BabyG
                                )

                            [2] => stdClass Object
                                (
                                    [title] => Bulova
                                    [url] => W_Bulova
                                )

                            [3] => stdClass Object
                                (
                                    [title] => Children_s
                                    [url] => W_Childrens
                                )

                        )

                )

        )

)

Answer 4

所有键和值都必须是 JSON 中的字符串，您缺少引号。

{
    "categories": [
        {
            "necklaces": [
                {
                    "title": "Outlet",
                    "url": "W_Outlet"
                },
                {
                    "title": "Baby-G",
                    "url": "W_BabyG"
                },
                {
                    "title": "Bulova",
                    "url": "W_Bulova"
                },
                {
                    "title": "Children_s",
                    "url": "W_Childrens"
                }
            ]
        }
    ]
}

您可以尝试JSONLint来测试 JSON。