php - 在 PHP 中访问没有名称的数组

Question

我正在尝试访问仅在一个数组中的已解码 json 元素，例如:

 [
    {
    timestamp: 1509523044,
    tid: 83450451,
    price: "6381.0",
    amount: "1.0",
    type: "sell"
    },
    {
    timestamp: 1509523044,
    tid: 83450448,
    price: "6380.0",
    amount: "1.12894377",
    type: "buy"
    }
 ]

我已经尝试过

$json = json_decode($result); 

echo $json[0]->price;
echo $json->[0]price;
echo $json->[0]->price;

不断收到如下错误:

Fatal error: Cannot use object of type stdClass as array in

如何访问没有数组名称的每个单独元素？谢谢

Answer 1

您的 json 格式错误:为了获得有效的 json，您应该具有如下内容:

<?php
$a = '[{
    "timestamp": 1509523044,
    "tid": 83450451,
    "price": "6381.0",
    "amount": "1.0",
    "type": "sell"
},
{
    "timestamp": 1509523044,
    "tid": 83450448,
    "price": "6380.0",
    "amount": "1.12894377",
    "type": "buy"
}
]';
$b = json_decode($a, true);
var_dump($b);

这将返回您需要的数组