Question

我有一个看起来像这样的JSON文件......

{
"success": true,
"num_items": 6104,
"items": [
    {
        "market_name": "\u2605 Bayonet",
        "market_hash_name": "\u2605 Bayonet",
        "icon_url": "\/\/steamcommunity-a.akamaihd.net\/economy\/image\/-9a81dlWLwJ2UUGcVs_nsVtzdOEdtWwKGZZLQHTxDZ7I56KU0Zwwo4NUX4oFJZEHLbXU5A1PIYQh5hlcX0nvUOGsx8DdQBJjIAVHubSaKQZ53P3NZXMXvYmykdLSxqWkZ7-HkjMIvpIj3u2Y84733gzh_RU_MG_zIYLEdQ45fxiOrdJh0ExF",
        "name_color": "8650AC",
        "quality_color": "EB4B4B"
    },
    {
        "market_name": "\u2605 Bayonet | Blue Steel (Battle-Scarred)",
        "market_hash_name": "\u2605 Bayonet | Blue Steel (Battle-Scarred)",
        "icon_url": "\/\/steamcommunity-a.akamaihd.net\/economy\/image\/-9a81dlWLwJ2UUGcVs_nsVtzdOEdtWwKGZZLQHTxDZ7I56KU0Zwwo4NUX4oFJZEHLbXH5ApeO4YmlhxYQknCRvCo04DEVlxkKgpotLu8JAllx8zJYAJA4MmzkL-DkvbiKvXTkzNVucNzj7mX9tWk21Xkr0JvN231JYGcdA47NF3Y81Hoxebs1sftot2XnmcyW1u0",
        "name_color": "8650AC",
        "quality_color": "EB4B4B"
    },
    // etc ...
]

我有一堆所谓的项目，我想通过只知道quality_color获得market_hash_name。我怎么能用PHP做到这一点？

Answer 1

您需要做的是：

解码您的JSON文件json_decode。这将允许您的JSON在关联数组中可访问。
使用for循环或foreach循环遍历＆＃39;项目中的每个数组。数组，将market_hash_name与您的用户输入（？）进行比较，然后获取该数组的quality_color值。

编辑：你很好地尝试了答案，所以这是我解决问题的有效方法。从你给我看的一小段代码中，问题是你不能使json_decode成为一个关联数组，而是将数组调用为一个数组。而不是json_decode($JSONString)它应该是json_decode($JSONString, true)

<?php

 $JSONin = '{
  "success": true,
  "num_items": 6104,
  "items": [
    {
      "market_name": "★ Bayonet",
      "market_hash_name": "★ Bayonet",
      "icon_url": "//steamcommunity-a.akamaihd.net/economy/image/-9a81dlWLwJ2UUGcVs_nsVtzdOEdtWwKGZZLQHTxDZ7I56KU0Zwwo4NUX4oFJZEHLbXU5A1PIYQh5hlcX0nvUOGsx8DdQBJjIAVHubSaKQZ53P3NZXMXvYmykdLSxqWkZ7-HkjMIvpIj3u2Y84733gzh_RU_MG_zIYLEdQ45fxiOrdJh0ExF",
      "name_color": "8650AC",
      "quality_color": "EB4B4B"
    },
    {
      "market_name": "★ Bayonet | Blue Steel (Battle-Scarred)",
      "market_hash_name": "★ Bayonet | Blue Steel (Battle-Scarred)",
      "icon_url": "//steamcommunity-a.akamaihd.net/economy/image/-9a81dlWLwJ2UUGcVs_nsVtzdOEdtWwKGZZLQHTxDZ7I56KU0Zwwo4NUX4oFJZEHLbXH5ApeO4YmlhxYQknCRvCo04DEVlxkKgpotLu8JAllx8zJYAJA4MmzkL-DkvbiKvXTkzNVucNzj7mX9tWk21Xkr0JvN231JYGcdA47NF3Y81Hoxebs1sftot2XnmcyW1u0",
      "name_color": "8650AC",
      "quality_color": "EB4B4B"
    }
  ]
}';

 $JSON = json_decode($JSONin, true);

 $searched_market_hash_name = "★ Bayonet | Blue Steel (Battle-Scarred)";

 foreach ($JSON['items'] as $item)
     {
     if ($searched_market_hash_name == $item['market_hash_name'])
         {
         echo "found! quality color is " . $item['quality_color'];
         }
     }

使用PHP在JSON中获取特定值

1 个答案: