Question

我试图从具有最高'字节'值的对象中获取'name'值。到目前为止我的代码是：

<?php

$str = file_get_contents('https://yivesmirror.com/api/spigot');

$json = json_decode($str, true);

echo get_highest($json);

function get_highest($json)
{
   foreach($json as $key => $val)
   {
      if ( is_array($val) ) $json[$key] = get_highest( $val );
   }
   sort($json);

   return array_pop($json);
}

?>

从这个JSON文件：

{
    "spigot-1.12-R0.1-SNAPSHOT-b1364.jar": {
        "name": "spigot-1.12-R0.1-SNAPSHOT-b1364.jar",
        "size": {
            "human": "40.52MB",
            "bytes": 42488067
        },
        "date": {
            "human": "July 25, 2017",
            "epoch": 1501040531
        }
    }
},
{
    "spigot-api-1.12-R0.1-SNAPSHOT-shaded-b1364.jar": {
        "name": "spigot-api-1.12-R0.1-SNAPSHOT-shaded-b1364.jar",
        "size": {
            "human": "4.10MB",
            "bytes": 4297941
        },
        "date": {
            "human": "July 25, 2017",
            "epoch": 1501040531
        }
    }
}

不幸的是，这是搜索所有键并给我'epoch'值而不是'bytes'值。我怎么能：

只找到'bytes'对象中的最高值？
从找到最大'字节'值的地方获取'name'值（如上所述）？

Answer 1

当我运行你的PHP时，它给了我：
Notice: Undefined index: urls in C:\xampp\htdocs\FOLDER\FILE

但是当我改变了
$json = json_decode($str, true);

到

$json = var_dump(json_decode($str, true));

并使用$version

重新制作$version = $json['urls']['free'] var

然后我写道：echo $version 它给了我：

array(294) { [0]=> array(1) { ["spigot-1.12-R0.1-SNAPSHOT-b1364.jar"]=> array(6) { ["name"]=> string(35) "spigot-1.12-R0.1-SNAPSHOT-b1364.jar" ["version"]=> array(1) { ["minecraft"]=> string(4) "1.12" } ["size"]=> array(2) { ["human"]=> string(7) "40.52MB" ["bytes"]=> int(42488067) } ["date"]=> array(2) { ["human"]=> string(13) "July 25, 2017" ["epoch"]=> int(1501040531) } ["hashes"]=> array(2) { ["md5"]=> string(32) "482dc5b3273e3c9aa4ed38da73e9e9f2" ["sha1"]=> string(40) "921ad2d9fbe9bfbbd6d48a4c15196d20f265ca5c" } ["urls"]=> array(2) { ["paid"]=> string(119) "http://sh.st/st/40260a458161ce19c15c6bc46ebe3bd6/http://yivesmirror.com/grab/spigot/spigot-1.12-R0.1-SNAPSHOT-b1364.jar" ["free"]=> string(71) "http://yivesmirror.com/files/spigot/spigot-1.12-R0.1-SNAPSHOT-b1364.jar" } } } [1]=> array(1) { ["spigot-api-1.12-R0.1-SNAPSHOT-shaded-b1364.jar"]=> array(6) { ["name"]=> string(46) "spigot-api-1.12-R0.1-SNAPSHOT-shaded-b1364.jar" ["version"]=> array(1) { ["minecraft"]=> string(4) "1.12" } ["size"]=> array(2) { ["human"]=> string(6) "4.10MB" ["bytes"]=> int(4297941) } ["date"]=> array(2) { ["human"]=> string(13) "July 25, 2017" ["epoch"]=> int(1501040531) } ["hashes"]=> array(2) { ["md5"]=> string(32) "c9f7107d886bb349ab5dd6b02c86c97f" ["sha1"]=> string(40) "5f3898abbad835708db330a82864f209bd2bf712" } ["urls"]=> array(2) { ["paid"]=> string(130) "http://sh.st/st/40260a458161ce19c15c6bc46ebe3bd6/http://yivesmirror.com/grab/spigot/spigot-api-1.12-R0.1-SNAPSHOT-shaded-b1364.jar" ["free"]=> string(82) "http://yivesmirror.com/files/spigot/spigot-api-1.12-R0.1-SNAPSHOT-shaded-b1364.jar" } } } [2]=> array(1) { ["spigot-api-1.12-R0.1-SNAPSHOT-b1364.jar"]=> array(6) { ["name"]=> string(39) "spigot-api-1.12-R0.1-SNAPSHOT-b1364.jar" ["version"]=> array(1) { ["minecraft"]=> string(4) "1.12" } ["size"]=> array(2) { ["human"]=> string(8) "857.34kB" ["bytes"]=> int(877913) } ["date"]=> array(2) { ["human"]=> string(13) "July 25, 2017" ["epoch"]=> int(1501040531) } ["hashes"]=> array(2) { ["md5"]=> string(32) "d8f24dbb642125c9f0ce107cd312fc05" ["sha1"]=> string(40) "3048301386c77e1e114c1312493b41ad9a977b52" } ["urls"]=> array(2) { ["paid"]=> string(123) "http://sh.st/st/40260a458161ce19c15c6bc46ebe3bd6/http://yivesmirror.com/grab/spigot/spigot-api-1.12-R0.1-SNAPSHOT-b1364.jar" ["free"]=> string(75) "http://yivesmirror.com/files/spigot/spigot-api-1.12-R0.1-SNAPSHOT-b1364.jar" } } } [3]=> array(1) { ["spigot-api-1.12-R0.1-SNAPSHOT-shaded-b1363.jar"]=> array(6) { ["name"]=> string(46) "spigot-api-1.12-R0.1-SNAPSHOT-shaded-b1363.jar" ["version"]=> array(1) { ["minecraft"]=> string(4) "1.12" } ["size"]=> array(2) { ["human"]=> string(6) "4.10MB" ["bytes"]=> int(4297941) } ["date"]=> array(2) { ["human"]=> string(13) "July 25, 2017" ["epoch"]=> int(1501040074) } ["hashes"]=> array(2) { ["md5"]=> string(32) "a360db7231f58f61719920b6dd9c7d65" ["sha1"]=> string(40)...

更新：
如果您从true中删除$json = json_decode($str, true);参数

然后你的代码应该工作

PHP从JSON搜索多维数组以获取特定值

1 个答案: