从 json 中的子行中删除方括号

Question

我正在尝试在网站上显示以下数据:-

"daily":[{"dt":1593864000,"sunrise":1593834201,"sunset":1593894929,"temp":{"day":18.47,"min":17.83,"max":18.71,"night":17.83,"eve":18.71,"morn":18.47},"feels_like":{"day":16,"night":13.09,"eve":16.54,"morn":16},"pressure":1006,"humidity":77,"dew_point":14.37,"wind_speed":5.51,"wind_deg":244,"weather":[{"id":500,"main":"Rain","description":"light rain","icon":"10d"}],"clouds":90,"uvi":7.08}

我提取了除天气部分中的条目之外的任何条目，因为我使用的代码认为天气数据是一个单独的数组。

与显示数据相关的代码部分是：-

<span class="min-temperature">&nbsp;Minimum Temperature&nbsp;<?php echo $data->daily[0]->clouds; ?>&deg;C</span><br>
  <span class="min-temperature">&nbsp;Pressure&nbsp;<?php echo $data->daily[0]->weather->id; ?></span>

第一行显示数据正常，但天气部分中的任何内容都无法显示任何内容。

我已经看到了删除所有方括号的解决方案，但它只需要天气部分周围的括号。

提前致谢

Answer 1

json_decodes 下面的代码与云和天气数组相呼应。 '希望能帮助到你。请评论。谢谢。

<?php 

$data=json_decode( '{"daily":{"dt":1593864000,"sunrise":1593834201,"sunset":1593894929,"temp":{"day":18.47,"min":17.83,"max":18.71,"night":17.83,"eve":18.71,"morn":18.47},"feels_like":{"day":16,"night":13.09,"eve":16.54,"morn":16},"pressure":1006,"humidity":77,"dew_point":14.37,"wind_speed":5.51,"wind_deg":244,"weather":[{"id":500,"main":"Rain","description":"light rain","icon":"10d"}],"clouds":90,"uvi":7.08}}'); # define $data as a stdClass Object
echo $data->daily->clouds;
echo "\n";

# below, weather array is converted into a string
$wa=(array)$data->daily->weather[0];
foreach($wa as $key=> $val){
    echo $key."=".$val."; ";
}

?>

输出：

90
id=500; main=Rain; description=light rain; icon=10d;

Answer 2

在这种情况下，您必须使用 json_decode 将 json 字符串转换为关联数组。

$data = '{"daily":{"dt":1593864000,"sunrise":1593834201,"sunset":1593894929,"temp":{"day":18.47,"min":17.83,"max":18.71,"night":17.83,"eve":18.71,"morn":18.47},"feels_like":{"day":16,"night":13.09,"eve":16.54,"morn":16},"pressure":1006,"humidity":77,"dew_point":14.37,"wind_speed":5.51,"wind_deg":244,"weather":[{"id":500,"main":"Rain","description":"light rain","icon":"10d"}],"clouds":90,"uvi":7.08}}';
$decode = json_decode($data,true);
echo '<pre>';
//print_r($decode);
echo $decode['daily']['clouds'].'<br>';
echo $decode['daily']['uvi'].'<br>';

echo $decode['daily']['weather'][0]['id'].'<br>';
echo $decode['daily']['weather'][0]['main'].'<br>';  //These three are from weather array. 
echo $decode['daily']['weather'][0]['description'].'<br>';
echo '<pre>';

输出

90
7.08
500
Rain
light rain

如果您想知道数组索引是如何工作的，您可以使用代码中的 print_r，只需将其从注释中删除即可。

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