php提交返回的json整理

Question

php
<?php
$curl = curl_init();
curl_setopt_array($curl, array(
  CURLOPT_URL => 'https://api.xxx.com/api/pool_stats?pool_type=xxx,
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_SSL_VERIFYPEER => false,
  CURLOPT_ENCODING => '',
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 0,
  CURLOPT_FOLLOWLOCATION => true,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => 'GET',
  CURLOPT_HTTPHEADER => array(
    'Authorization: Bearer ' xxxxxxxxxxxxxxxxxxx
  ),
));
$response = curl_exec($curl);
curl_close($curl);
echo $response;

运行后返回的数据如下
返回数据1
{"id":329859,"label":"test","login":"ca60d32539d18111111","password":"aedb27f5e92d1111","balance":5368033729,"balance_format":"5 GB","threads":2000,"sticky_range":{"start":10000,"end":30000},"allowed_ips":[],"blocked":false,"pool_type":"datacenter","default_pool_parameters":{"countries":["us"],"cities":[""],"states":[""],"zipcodes":[],"asns":[],"exclude_countries":[],"exclude_asn":[],"anonymous_filter":false,"rotation_interval":20},"blocked_hosts":[]}

返回数据 2
{"id":329859,"label":"test","login":"ca60d32539d1823defdsfds","password":"aedb27f5e9211111","balance":5368033729,"balance_format":"5 GB","threads":2000,"sticky_range":{"start":10000,"end":30000},"allowed_ips":["125.1.1.1","60.249.20.180"],"blocked":false,"pool_type":"datacenter","default_pool_parameters":{"countries":["us","jp","gb"],"cities":[""],"states":[""],"zipcodes":[],"asns":[],"exclude_countries":[],"exclude_asn":[],"anonymous_filter":false,"rotation_interval":11},"blocked_hosts":[]}

echo $response;这里怎么写才能达到以下效果

需要只保留 default_pool_parameters 得到以下格式
国家countries: us,jp,gb
城市cities:
州states:
邮编zipcodes:
ASN号asns:
旋转时间rotation_interval: 11

echo $response; 这里怎么写才能达到以上效果

Answer 1

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要实现从API返回的数据中提取`default_pool_parameters`部分并按特定格式输出，您可以使用PHP对API返回的JSON数据进行解析。以下是如何实现这一目标的详细步骤和代码示例，包括对API请求的执行和结果的格式化输出。

步骤

1. 发送API请求：使用cURL发送GET请求获取数据。
2. 解析JSON数据：将返回的JSON字符串解析为PHP数组。
3. 提取default_pool_parameters信息：从数组中提取default_pool_parameters字段，并格式化输出。
4. 输出结果：将提取的信息按照指定格式打印出来。

示例代码

以下代码段完整地实现了上述步骤：

<?php
// 初始化cURL
$curl = curl_init();
// 设置cURL选项
curl_setopt_array($curl, array(
    CURLOPT_URL => 'https://api.xxx.com/api/pool_stats?pool_type=xxx',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_SSL_VERIFYPEER => false,
    CURLOPT_ENCODING => '',
    CURLOPT_MAXREDIRS => 10,
    CURLOPT_TIMEOUT => 0,
    CURLOPT_FOLLOWLOCATION => true,
    CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
    CURLOPT_CUSTOMREQUEST => 'GET',
    CURLOPT_HTTPHEADER => array(
        'Authorization: Bearer xxxxxxxxxxxxxxxxxxx',
    ),
));
// 执行请求并获取响应
$response = curl_exec($curl);
// 关闭cURL
curl_close($curl);
// 解析JSON响应
$data = json_decode($response, true);
// 提取default_pool_parameters
if (isset($data['default_pool_parameters'])) {
    $default_pool_params = $data['default_pool_parameters'];
    
    // 格式化输出
    echo "国家countries: " . implode(',', $default_pool_params['countries']) . "\n";
    echo "城市cities: " . implode(',', $default_pool_params['cities']) . "\n";
    echo "州states: " . implode(',', $default_pool_params['states']) . "\n";
    echo "邮编zipcodes: " . implode(',', $default_pool_params['zipcodes']) . "\n";
    echo "ASN号asns: " . implode(',', $default_pool_params['asns']) . "\n";
    echo "旋转时间rotation_interval: " . $default_pool_params['rotation_interval'] . "\n";
} else {
    echo "未找到default_pool_parameters数据。\n";
}
?>

说明

• 解析返回的JSON：json_decode($response, true)将JSON字符串转换为关联数组。
• 输出格式：
  • 使用implode(',', $array)来将数组元素以逗号分隔的形式输出。
  • 使用isset()函数来确保该键存在于数组中，这避免了潜在的未定义索引错误。
• 上述代码只需将https://api.xxx.com/api/pool_stats?pool_type=xxx和authorization token替换为您的实际值，即可正常使用。

示例输出

假设API返回的数据对应于您提供的示例，运行上面的代码后，终端将输出类似如下内容：

国家countries: us,jp,gb
城市cities:
州states:
邮编zipcodes:
ASN号asns:
旋转时间rotation_interval: 11

这样，您就成功从API的返回数据中抽取了所需的信息并按要求格式输出。