使用 PHP 提取和访问 JSON 数据
P粉448346289
2023-08-28 11:54:39
<p><br /></p><blockquote>
<p>这是一个通用参考问题和答案，涵盖许多永无休止的“如何访问 JSON 中的数据？”问题。它在这里处理在 PHP 中解码 JSON 并访问结果的广泛基础知识。</p>
</blockquote>
<p>我有 JSON：</p>
<pre class="brush:php;toolbar:false;">{
"type": "donut",
"name": "Cake",
"toppings": [
{ "id": "5002", "type": "Glazed" },
{ "id": "5006", "type": "Chocolate with Sprinkles" },
{ "id": "5004", "type": "Maple" }
]
}</pre>
<p>如何在 PHP 中对其进行解码并访问结果数据？</p>
<?php $jsonData = '{ "type": "donut", "name": "Cake", "toppings": [ { "id": "5002", "type": "Glazed" }, { "id": "5006", "type": "Chocolate with Sprinkles" }, { "id": "5004", "type": "Maple" } ] }'; // Decode the JSON $data = json_decode($jsonData, true); // Access the data $type = $data['type']; $name = $data['name']; $toppings = $data['toppings']; // Access individual topping details $firstTopping = $toppings[0]; $firstToppingId = $firstTopping['id']; $firstToppingType = $firstTopping['type']; // Print the data echo "Type: $type\n"; echo "Name: $name\n"; echo "First Topping ID: $firstToppingId\n"; echo "First Topping Type: $firstToppingType\n"; ?>在此示例中，json_decode() 用于将 JSON 数据解码为 PHP 关联数组。然后，您可以像访问任何 PHP 数组一样访问该数组的各个元素。