PHP-从JSON打印对象键 [英] PHP - print object key from json

问题描述

对不起，我遇到一个愚蠢的问题，但我遇到了麻烦，我无法从此数组打印国家/地区:

sorry i got a stupid question i know but i'm in trouble, i'm unable to print the Countries from this array:

$array =   json_decode('[
   {
       "Afghanistan": {
           "lang": "en",
           "browser_code": []
       }
   },
   {
       "Albania": {
           "lang": "en",
           "browser_code": []
       }
   },
   {
       "Algeria": {
           "lang": "en",
           "browser_code": []
       }
   }
]');

我的尝试:

foreach($array as $key){
 foreach($key as $k){
  echo $k;
}
}

我使用foreach(){}循环进行了多种尝试，但是我在逻辑上遇到了麻烦，我只需要打印出来即可:

i tryed in many ways using a foreach(){} loop but i'm in trouble with the logic, i just have to print out:

Afghanistan, Algeria, Algeria

有任何线索吗?

推荐答案

$arrJson = json_decode('[
   {
       "Afghanistan": {
           "lang": "en",
           "browser_code": []
       }
   },
   {
       "Albania": {
           "lang": "en",
           "browser_code": []
       }
   },
   {
       "Algeria": {
           "lang": "en",
           "browser_code": []
       }
   }
]');
foreach($arrJson as $key=>$val){
  foreach($val as $k=>$v){
    echo $k." , ";
  }
}

实时演示

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