Php 关于JSON解析错误_Php_Json_Api_Parsing_Weather Api

Php 关于JSON解析错误
php json api parsing
Php 关于JSON解析错误,php,json,api,parsing,weather-api,Php,Json,Api,Parsing,Weather Api,这一直在工作的人不知什么原因突然停止了工作。我一直在使用文件获取内容。不确定是什么导致代码混乱$json=file\u get\u contents（'http://api.openweathermap.org/data/2.5/weather?q=London，英国&appid=a1fc2c19d548237a56e0edd7b79b3ebc'）； <?php $url = "http://api.openweathermap.org/data/2.5/weather?q=Lon
这一直在工作的人不知什么原因突然停止了工作。我一直在使用
文件获取内容。不确定是什么导致代码混乱
$json=file\u get\u contents（'http://api.openweathermap.org/data/2.5/weather?q=London，英国&appid=a1fc2c19d548237a56e0edd7b79b3ebc'）；
<?php
$url     = "http://api.openweathermap.org/data/2.5/weather?q=London,uk&appid=YOURAPI";
$json    = file_get_contents($url);
$data    = json_decode($json, true);
$data['city']['name'];

foreach ($data['list'] as $day => $value) {
  echo $todaystemperature = $value[temp][max];
}
?>

$data=json_decode（$json，true）；
或
$data=json_decode（$json）；
回声“；
打印（数据）；
出口
您的代码似乎不正确，您使用的url给出了以下响应
    {
  "coord": {
    "lon": -0.13,
    "lat": 51.51
  },
  "weather": [
    {
      "id": 804,
      "main": "Clouds",
      "description": "overcast clouds",
      "icon": "04d"
    }
  ],
  "base": "stations",
  "main": {
    "temp": 284.66,
    "pressure": 1016.88,
    "humidity": 68,
    "temp_min": 284.66,
    "temp_max": 284.66,
    "sea_level": 1024.55,
    "grnd_level": 1016.88
  },
  "wind": {
    "speed": 4.91,
    "deg": 97.501
  },
  "clouds": {
    "all": 92
  },
  "dt": 1476377646,
  "sys": {
    "message": 0.0048,
    "country": "GB",
    "sunrise": 1476339772,
    "sunset": 1476378553
  },
  "id": 2643743,
  "name": "London",
  "cod": 200
}

在上面的json响应中，我找不到任何带有“list”的键，这就是代码中断的原因。这段代码可以用来获取城市的温度
<?php
 $url     = "http://api.openweathermap.org/data/2.5/weather?q=London,uk&appid=a1fc2c19d548237a56e0edd7b79b3ebc";
 $json    = file_get_contents($url);
 $data    = json_decode($json, true);
 echo $temp = $data['main']['temp'];
?>

需要根据您得到的JSON响应解析JSON数据
使用PHP获取Json数据的步骤

首先，您必须获得具有json_响应的数据
然后，您必须使用json\u decode（$json，TRUE）
之后，您可以使用foreach（）
来分割基于解码值得到的数组

在运行您在代码中给出的上述URL时，我得到如下输出
array (
  'coord' => 
  array (
    'lon' => -0.13000000000000000444089209850062616169452667236328125,
    'lat' => 51.50999999999999801048033987171947956085205078125,
  ),
  'weather' => 
  array (
    0 => 
    array (
      'id' => 804,
      'main' => 'Clouds',
      'description' => 'overcast clouds',
      'icon' => '04d',
    ),
  ),
  'base' => 'stations',
  'main' => 
  array (
    'temp' => 284.66000000000002501110429875552654266357421875,
    'pressure' => 1016.8799999999999954525264911353588104248046875,
    'humidity' => 68,
    'temp_min' => 284.66000000000002501110429875552654266357421875,
    'temp_max' => 284.66000000000002501110429875552654266357421875,
    'sea_level' => 1024.549999999999954525264911353588104248046875,
    'grnd_level' => 1016.8799999999999954525264911353588104248046875,
  ),
  'wind' => 
  array (
    'speed' => 4.910000000000000142108547152020037174224853515625,
    'deg' => 97.501000000000004774847184307873249053955078125,
  ),
  'clouds' => 
  array (
    'all' => 92,
  ),
  'dt' => 1476377768,
  'sys' => 
  array (
    'message' => 0.176900000000000001687538997430237941443920135498046875,
    'country' => 'GB',
    'sunrise' => 1476339772,
    'sunset' => 1476378552,
  ),
  'id' => 2643743,
  'name' => 'London',
  'cod' => 200,
)

获得的JSON:
{"coord":{"lon":-0.13,"lat":51.51},"weather":[{"id":804,"main":"Clouds","description":"overcast clouds","icon":"04d"}],"base":"stations","main":{"temp":284.66,"pressure":1016.88,"humidity":68,"temp_min":284.66,"temp_max":284.66,"sea_level":1024.55,"grnd_level":1016.88},"wind":{"speed":4.91,"deg":97.501},"clouds":{"all":92},"dt":1476377768,"sys":{"message":0.1769,"country":"GB","sunrise":1476339772,"sunset":1476378552},"id":2643743,"name":"London","cod":200}

<?php
 $url     = "http://api.openweathermap.org/data/2.5/weather?  q=London,uk&appid=a1fc2c19d548237a56e0edd7b79b3ebc";
 $json    = file_get_contents($url);
 $data    = json_decode($json, true);
 echo $temp = $data['main']['temp']; // To convert the data to Celsius by hitting the API called api.openweathermap. 
?>

{

    "coord":{
        "lon":-0.13,"lat":51.51},"weather":[
        {
            "id":804,"main":"Clouds","description":"overcast clouds","icon":"04d"}],"base":"stations","main":{
        "temp":284.66,"pressure":1016.88,"humidity":68,"temp_min":284.66,"temp_max":284.66,"sea_level":1024.55,"grnd_level":1016.88},"wind":{
        "speed":4.91,"deg":97.501},"clouds":{
        "all":92},"dt":1476377768,"sys":{
        "message":0.1769,"country":"GB","sunrise":1476339772,"sunset":1476378552},"id":2643743,"name":"London","cod":200

}

{

    "coord":{
        "lon":-0.13,"lat":51.51},"weather":[
        {
            "id":804,"main":"Clouds","description":"overcast clouds","icon":"04d"}],"base":"stations","main":{
        "temp":284.66,"pressure":1016.88,"humidity":68,"temp_min":284.66,"temp_max":284.66,"sea_level":1024.55,"grnd_level":1016.88},"wind":{
        "speed":4.91,"deg":97.501},"clouds":{
        "all":92},"dt":1476377768,"sys":{
        "message":0.1769,"country":"GB","sunrise":1476339772,"sunset":1476378552},"id":2643743,"name":"London","cod":200

}

因此，在后续的过程中，您可以得到如下值
PHP代码：
{"coord":{"lon":-0.13,"lat":51.51},"weather":[{"id":804,"main":"Clouds","description":"overcast clouds","icon":"04d"}],"base":"stations","main":{"temp":284.66,"pressure":1016.88,"humidity":68,"temp_min":284.66,"temp_max":284.66,"sea_level":1024.55,"grnd_level":1016.88},"wind":{"speed":4.91,"deg":97.501},"clouds":{"all":92},"dt":1476377768,"sys":{"message":0.1769,"country":"GB","sunrise":1476339772,"sunset":1476378552},"id":2643743,"name":"London","cod":200}

<?php
 $url     = "http://api.openweathermap.org/data/2.5/weather?  q=London,uk&appid=a1fc2c19d548237a56e0edd7b79b3ebc";
 $json    = file_get_contents($url);
 $data    = json_decode($json, true);
 echo $temp = $data['main']['temp']; // To convert the data to Celsius by hitting the API called api.openweathermap. 
?>

{

    "coord":{
        "lon":-0.13,"lat":51.51},"weather":[
        {
            "id":804,"main":"Clouds","description":"overcast clouds","icon":"04d"}],"base":"stations","main":{
        "temp":284.66,"pressure":1016.88,"humidity":68,"temp_min":284.66,"temp_max":284.66,"sea_level":1024.55,"grnd_level":1016.88},"wind":{
        "speed":4.91,"deg":97.501},"clouds":{
        "all":92},"dt":1476377768,"sys":{
        "message":0.1769,"country":"GB","sunrise":1476339772,"sunset":1476378552},"id":2643743,"name":"London","cod":200

}

{

    "coord":{
        "lon":-0.13,"lat":51.51},"weather":[
        {
            "id":804,"main":"Clouds","description":"overcast clouds","icon":"04d"}],"base":"stations","main":{
        "temp":284.66,"pressure":1016.88,"humidity":68,"temp_min":284.66,"temp_max":284.66,"sea_level":1024.55,"grnd_level":1016.88},"wind":{
        "speed":4.91,"deg":97.501},"clouds":{
        "all":92},"dt":1476377768,"sys":{
        "message":0.1769,"country":"GB","sunrise":1476339772,"sunset":1476378552},"id":2643743,"name":"London","cod":200

}

Js评估：
{"coord":{"lon":-0.13,"lat":51.51},"weather":[{"id":804,"main":"Clouds","description":"overcast clouds","icon":"04d"}],"base":"stations","main":{"temp":284.66,"pressure":1016.88,"humidity":68,"temp_min":284.66,"temp_max":284.66,"sea_level":1024.55,"grnd_level":1016.88},"wind":{"speed":4.91,"deg":97.501},"clouds":{"all":92},"dt":1476377768,"sys":{"message":0.1769,"country":"GB","sunrise":1476339772,"sunset":1476378552},"id":2643743,"name":"London","cod":200}

<?php
 $url     = "http://api.openweathermap.org/data/2.5/weather?  q=London,uk&appid=a1fc2c19d548237a56e0edd7b79b3ebc";
 $json    = file_get_contents($url);
 $data    = json_decode($json, true);
 echo $temp = $data['main']['temp']; // To convert the data to Celsius by hitting the API called api.openweathermap. 
?>

{

    "coord":{
        "lon":-0.13,"lat":51.51},"weather":[
        {
            "id":804,"main":"Clouds","description":"overcast clouds","icon":"04d"}],"base":"stations","main":{
        "temp":284.66,"pressure":1016.88,"humidity":68,"temp_min":284.66,"temp_max":284.66,"sea_level":1024.55,"grnd_level":1016.88},"wind":{
        "speed":4.91,"deg":97.501},"clouds":{
        "all":92},"dt":1476377768,"sys":{
        "message":0.1769,"country":"GB","sunrise":1476339772,"sunset":1476378552},"id":2643743,"name":"London","cod":200

}

{

    "coord":{
        "lon":-0.13,"lat":51.51},"weather":[
        {
            "id":804,"main":"Clouds","description":"overcast clouds","icon":"04d"}],"base":"stations","main":{
        "temp":284.66,"pressure":1016.88,"humidity":68,"temp_min":284.66,"temp_max":284.66,"sea_level":1024.55,"grnd_level":1016.88},"wind":{
        "speed":4.91,"deg":97.501},"clouds":{
        "all":92},"dt":1476377768,"sys":{
        "message":0.1769,"country":"GB","sunrise":1476339772,"sunset":1476378552},"id":2643743,"name":"London","cod":200

}

因此，当您对上述获得的json字符串执行json\u decode（）
时，输出如下
array (
  'coord' => 
  array (
    'lon' => -0.13000000000000000444089209850062616169452667236328125,
    'lat' => 51.50999999999999801048033987171947956085205078125,
  ),
  'weather' => 
  array (
    0 => 
    array (
      'id' => 804,
      'main' => 'Clouds',
      'description' => 'overcast clouds',
      'icon' => '04d',
    ),
  ),
  'base' => 'stations',
  'main' => 
  array (
    'temp' => 284.66000000000002501110429875552654266357421875,
    'pressure' => 1016.8799999999999954525264911353588104248046875,
    'humidity' => 68,
    'temp_min' => 284.66000000000002501110429875552654266357421875,
    'temp_max' => 284.66000000000002501110429875552654266357421875,
    'sea_level' => 1024.549999999999954525264911353588104248046875,
    'grnd_level' => 1016.8799999999999954525264911353588104248046875,
  ),
  'wind' => 
  array (
    'speed' => 4.910000000000000142108547152020037174224853515625,
    'deg' => 97.501000000000004774847184307873249053955078125,
  ),
  'clouds' => 
  array (
    'all' => 92,
  ),
  'dt' => 1476377768,
  'sys' => 
  array (
    'message' => 0.176900000000000001687538997430237941443920135498046875,
    'country' => 'GB',
    'sunrise' => 1476339772,
    'sunset' => 1476378552,
  ),
  'id' => 2643743,
  'name' => 'London',
  'cod' => 200,
)

因此，在获得数组后，它似乎是一个单个对象
，其中包含一些已获得的密钥的数组

因此，您只能从使用名为foreach（）
的循环运算符获得的输出中获取数据。因此，通过使用foreach（）
数组数据将以单一方式进入循环，然后它将操纵结果。
以下是结果
<?php
 $url     = "http://api.openweathermap.org/data/2.5/weather?q=London,uk&units=imperial&cnt=1&lang=en&appid=YOURAPI";
 $json    = file_get_contents($url);
 $data    = json_decode($json, true);
 echo $temp = $data['main']['temp'];
?>


从命令行运行良好的CURL返回{“cod”：401，“消息”：“无效的API密钥。请参阅http://openweathermap.org/faq#error401 更多信息。“
当浏览器返回响应时，他们可能会更改连接要求，或者当不在浏览器中使用时，您的按键达到了某些限制。（此外，如果该密钥是特定于您的密钥，则应修改/删除该密钥）@欧亚大陆。我已经提供了结果。检查一下，让我知道你的期望。感谢你的这些步骤。非常感激这是什么？答案应该有一个解释。你遇到了一个问题。这就是为什么我为你提供了代码。试试吧。你需要解释什么是错误的，以及你的代码是如何修复的。这应该是一个e教育网站，不仅仅是代码片段的存储库。我不知道…我的浏览器可能会出现问题。我收到警告：文件内容（？q=London，uk&appid=a1fc2c19d548237a56e0edd7b79b3ebc）：无法打开流：HTTP请求失败！HTTP/1.1 400错误请求位于/home/pray4mal/public_html/pray dev/weather/weather.php第27行on line$json=file_get_contents（$url）；您可以在浏览器中访问它吗尝试在浏览器中点击它“它正在工作，但数据似乎错误284.66..我正在向api.openweathermap寻求帮助