Question

我在使用内置的php函数从json文件中获取特定数据时遇到了麻烦。让我给你看一些代码：

Json文件：

{"votes": [ { "date":"November 3rd, 2017 10:08 PM EST", "timestamp":1509743288, "nickname":"Th3ProHack3R", "claimed":"0" }, { "date":"November 3rd, 2017 10:06 PM EST", "timestamp":1509743160, "nickname":"TheKing", "claimed":"0" },  { "date":"November 3rd, 2017 09:45 PM EST", "timestamp":1509741902, "nickname":"some0ne", "claimed":"0" }   ] }

我的PHP代码：

$json= file_get_contents("myfile.json");
$data =  json_decode($json, true);
$voter1 = $data['votes']->nickname;
echo $firstvoter;

我让这段代码处理一个没有数组的非常基本的json代码。但这里出了点问题，因为我无法获得选民的绰号。

我只是有点困惑，所以我想做的是拿起选民的绰号，然后我会用html将它们放在桌子上。

我希望我得到一个详细的答案，这样我就能理解一些令人困惑的东西。

Answer 1

你需要将数组转换为json对象。听到＆＃34;投票＆＃34;是json对象所以$ data [＆＃39; votes＆＃39;] [0]返回第一个数组看代码......

<?php 

$json= file_get_contents("myfile.json");
$data =  json_decode($json, true);
$voter1 = $data['votes'][0];
$voter2 =$data['votes'][1];
print_r( $voter1);
echo "<br>".$voter1["nickname"];
echo "<br>".$voter2["nickname"];

?>

Answer 2

转换成json Decode后，你的数组看起来像这样，

Array
(
    [votes] => Array
        (
            [0] => Array
                (
                    [date] => November 3rd, 2017 10:08 PM EST
                    [timestamp] => 1509743288
                    [nickname] => Th3ProHack3R
                    [claimed] => 0
                )

            [1] => Array
                (
                    [date] => November 3rd, 2017 10:06 PM EST
                    [timestamp] => 1509743160
                    [nickname] => TheKing
                    [claimed] => 0
                )

            [2] => Array
                (
                    [date] => November 3rd, 2017 09:45 PM EST
                    [timestamp] => 1509741902
                    [nickname] => some0ne
                    [claimed] => 0
                )

        )

)

在这里你需要昵称：

foreach ($jsonData['votes'] as $key => $value) {
    echo "Nickname : ". $value['nickname']."<br/>";
}

从包含数组的{j}文件获取数据

2 个答案: