如何从存储在变量中的jsondecode响应中搜索和获取值？

编程问答 2022-06-06

问题描述

我在https：// mysite / info中具有以下JSON响应：

{
 "wg0": {
   "privateKey": "[hidden]","publicKey": "XXXXXXXXXXXXXXXXXXX","listenPort": 0,"peers": {
     "B3GtLuabWguXoG2Tz8KVukPXx3twn7A+X/SVT8=": {
       "endpoint": "0.0.0.0:5377","latestHandshake": "Oct 28,2020 1:58:32 UTC","transferRx": "2.432 GB","transferTx": "1.098 GB","allowedIps": [
         "10.85.85.2/32"
       ]
     },"2Uqo3X2ubogU92LS4mWsZtF04ah3qJ4gt1g0=": {
       "endpoint": "0.0.0.0:5412",2020 1:58:52 UTC","transferRx": "32.239 MB","transferTx": "220.852 MB","allowedIps": [
         "10.85.85.3/32"
       ]
     }
   }
 }
}

我需要在PHP中将“ allowedIps”值搜索到该响应中，并返回相应的“ latestHandshake”值。

例如：

$ch2 = curl_init();
curl_setopt($ch2,CURLOPT_SSL_VERIFYPEER,false);
curl_setopt($ch2,CURLOPT_RETURNTRANSFER,true);
curl_setopt($ch2,CURLOPT_URL,'https://mysite/info');
$result2 = curl_exec($ch2);
curl_close($ch2);

$obj2 = json_decode($result2);

$IPtoSearch = "10.85.85.2/32";

//Now How can I search $IPtoSearch into $obj2 and return latestHandshake value?

...

感谢帮助！

解决方法

很遗憾，您返回的JSON实际上无效，因为00000不是有效的整数。如果您可以将00000转换为0，则JSON将成功解码，并且您可以找到与您的搜索IP地址相对应的latestHandshake值，如下所示：

$obj2 = json_decode($result2,true);
$IPtoSearch = "10.85.85.2/32";

foreach ($obj2['wg0']['peers'] as $peer) {
    if (in_array($IPtoSearch,$peer['allowedIps'])) {
        $latestHandshake = $peer['latestHandshake'];
        break;
    }
}

echo "Last handshake for $IPtoSearch was at $latestHandshake\n";

输出（用于您的示例数据）：

Last handshake for 10.85.85.2/32 was at Oct 28,2020 1:58:32 UTC

Demo on 3v4l.org

arraysarraysjsonjsondecoder