具有多级 json 解码的非法字符串偏移量

Question

我在尝试从多级 json url 中提取一些数据时遇到了一些问题。我可以得到除某个嵌套部分之外的其他所有内容。

{
  "name": "NewNationsPnW",
  "count": 10,
  "frequency": "Every 15 mins",
  "version": 31,
  "newdata": false,
  "lastrunstatus": "success",
  "thisversionstatus": "success",
  "nextrun": "Wed Jan 13 2016 22:57:30 GMT+0000 (UTC)",
  "thisversionrun": "Wed Jan 13 2016 22:42:30 GMT+0000 (UTC)",
  "results": {
    "collection1": [
      {
        "Nation": {
          "href": "https://politicsandwar.com/nation/id=30953",
          "text": "Renegade States"
        },
        "Founded": "01/13/2016",
        "Alliance": "None",
        "Continent": "North America",
        "property7": "",
        "index": 1,
        "url": "https://politicsandwar.com/nations/"
      }
    ]
  }
}

以下代码用于显示该嵌套区域，但我想将其用于各个输出。

$request = "https://www.kimonolabs.com/api/4p7k02r0?apikey=qAnUSnSVi8B17hie7xbPh9ijikNLzBzk";
$response = file_get_contents($request);
$json = json_decode($response, true);
//echo '<pre>'; print_r($results);
foreach($json['results']['collection1'] as $stat) {
    foreach($stat['Nation'] as $stat1) {
        
            echo $stat1;
}
    if($stat['Alliance'] == 'None') {
    echo $stat['Founded'] . " - " . $stat['Alliance'] . " - " . $stat['Continent'] . "<br />";
}
}

我尝试了以下方法

foreach($json['results']['collection1'] as $stat) {
    foreach($stat['Nation'] as $stat1) {
            echo $stat1['text'];
            echo $stat1['href'];
    }
    if($stat['Alliance'] == 'None') {
    echo $stat['Founded'] . " - " . $stat['Alliance'] . " - " . $stat['Continent'] . "<br />";
}
}

但我得到

解析中的非法字符串偏移"文本".php在第 10 行

解析中的非法字符串偏移量"href".php在第 11 行

以及它只显示

hhRR01/13/2016 - 无 - 北美

hhFFhhDD01/13/2016 - 无 - 亚洲

我确信我正在做一些简单修复的事情，但作为一个菜鸟，我把一切都搞砸了。

Answer 1

你的嵌套循环是不必要的，错误的原因：

foreach($json['results']['collection1'] as $stat) {
    echo $stat['nation']['text'];
    echo $stat['nation']['href'];
}

Answer 2

没有必要将一个完美的JSON对象数据结构转换为数组。

<?php
$request = "https://www.kimonolabs.com/api/4p7k02r0?apikey=qAnUSnSVi8B17hie7xbPh9ijikNLzBzk";
$response = file_get_contents($request);
$j = json_decode($response );
foreach ($j->results->collection1 as $collection1 ) {
    echo $collection1->Nation->href;
    echo $collection1->Nation->text;
    if($collection1->Alliance == 'None') {
        echo sprintf("%s - %s - %s<br />",
                     $collection1->Founded,
                     $collection1->Alliance,
                     $collection1->Continent
                     );
    }
}