如何从PHP中提取多个JSON对象并用PHP数组? [英] How do I extract multiple JSON objects from and array with PHP?

问题描述

我一直在尝试找出如何从json数组中提取多个JSON对象.

i've been trying to figure out how to extract multiple JSON objects from a json array.

我在其他帖子中使用了此代码

I used this code from other post

$json = '[
            {"user_id":"1",
            "user_name":"Sayeed Amin",
            "time":"2019-11-06 13:21:26"}
        ]';

$someArray = json_decode($json, true);

foreach ($someArray as $key => $value) {
    echo $value["user_id"] . ", " . $value["user_name"] . ", " . $value["time"] . "<br>";
}

我可以将其用于数组内的单个json对象，效果很好.

I can use this for a single json object inside an array, the result is good.

结果: 1，Sayeed Amin，2019-11-06 13:21:26

如果我在数组和数组中有多个json对象，该怎么办?喜欢

How about if i have multiple json objects inside and array? like

$json = '[
        {"name":"Name",
        "value":"me you",
        "id":0,
        "type":"name",
        "first":"me",
        "middle":"",
        "last":"you"
        },
        {"name":"Email",
        "value":"[e-mail]",
        "id":1,
        "type":"email"
        },
        {"name":"Phone",
        "value":"[phone]",
        "id":2,"type":"phone"
        },
        {"name":"Address",
        "value":"my address\nsomecity, somestate\nsomepost\nUS",
        "id":3,
        "type":"address",
        "address1":"my address",
        "address2":"",
        "city":"somecity",
        "state":"somestate",
        "postal":"somepost",
        "country":"US"
        }
]';

$someArray = json_decode($json, true);

foreach ($someArray as $key => $value) {
    echo $value["name"] . ", " . $value["value"] . "<br>";
}

结果:名字，我，你
电子邮件，myemail @ gmail.com
电话，+ 12015550000
地址，我的地址，某个城市，某个州，某个职位，美国

所需结果:我叫你，

推荐答案

如果您只想输出对象数组的首次出现，则可以像这样对数组进行适当寻址

If you only want to output the First Occurance of the array of objects then address the array appropriately like

$json = '[
        {"name":"Name",
        "value":"me you",
        "id":0,
        "type":"name",
        "first":"me",
        "middle":"",
        "last":"you"
        },
        {"name":"Email",
        "value":"[e-mail]",
        "id":1,
        "type":"email"
        },
        {"name":"Phone",
        "value":"[phone]",
        "id":2,"type":"phone"
        },
        {"name":"Address",
        "value":"my address\nsomecity, somestate\nsomepost\nUS",
        "id":3,
        "type":"address",
        "address1":"my address",
        "address2":"",
        "city":"somecity",
        "state":"somestate",
        "postal":"somepost",
        "country":"US"
        }
]';

$arr = json_decode($json);

echo $arr[0]->name . ", " . $arr[0]->value . "\n";

结果

Name, me you

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