Question

我尝试将我的JSON文件中的数据加载到php中，但我的问题是如何出错？

JSON：

{
    "drinks":[

    "1" {"coffee": "zwart", "country":"afrika"},

    "2" {"tea": "thee", "country":"china"},

    "3" {"water": "water", "country":"netherlands"},
    ]
}

PHP：

<?php
$str = file_get_contents('data.json');
$json = json_decode($str, true);
$drinks = $json['drinks'][0][coffee];

echo $drinks;
?>

Answer 1

根据RFC 4627（JSON specification），您的JSON输入无效。所以正确的json字符串必须是：

   {"drinks":[
              {"coffee": "zwart", "country":"afrika"},
              {"tea": "thee", "country":"china"},
              {"water": "water", "country":"netherlands"}
            ]
    }

所以你的代码可以工作：

$str = file_get_contents('data.json');
$json = json_decode($str, true);    
$drinks = $json['drinks'][0]['coffee'];
echo $drinks;

或者至少，您必须格式化您的json字符串，如下所示：

{
    "drinks":[    
      {
       "1": {"coffee": "zwart", "country":"afrika"},    
       "2": {"tea": "thee", "country":"china"},    
       "3": {"water": "water", "country":"netherlands"}
      }
   ]
}

您可以通过这种方式获取数据：

$str = file_get_contents('data.json');
$json = json_decode($str, true);
$drinks = $json['drinks'][0]['1']['coffee'];
echo $drinks;

PHP加载json数据，输出为空

1 个答案: