如何使用php引用具有键值对的json数组

Question

我已经阅读了类似的帖子，但仍然可以在我的情况下使用一些帮助...我有一段时间从包含键和值对的json数组获取值的魔鬼：

{"address": "4 Ficticious Ave", 
"city": "Miami", 
"country": "United States", 
"email": "[email protected]", 
"first_name": "Jane", 
"last_name": "Doe", 
"state": "FL", 
"zip_code": "03423", 
"response_data": 
"[{"key":"7122", "value":"37-52"},
{"key":"7123","value":"Female"},
{"key":"7124","value":"$35,000 to $50,000 USD"},
{"key":"6176","value":"Miami"},
{"key":"6177","value":"FL"},
{"key":"6179","value":"United States"}]"}

我试图获取所有值，但是特别是对于response_data键值对没有成功：

`//从$ data数组中获取JSON数据

// Identify the content as json
header("Content-Type: application/json; charset=UTF-8");

// get the contents of the JSON file
$data = file_get_contents("php://input");

//decode JSON data to PHP array
$content = json_decode($data, true);

//Fetch the details of customer
$Cust_Fname = $content['first_name'];
$Cust_Lname = $content['last_name'];
$Cust_Email = $content['email'];
$Street_Address = $content['address'];
$City = $content['city'];
$State = $content['state'];
$Country = $content['country'];
$Postal_Code = $content['zip_code'];

//also fetch the appended "array" of key/value fields...
$Response_AgeKey = $content['reponse_data'][0]['key'];
$Response_GenderKey = $content['reponse_data'][1]['key'];
$Response_IncomeKey = $content['reponse_data'][2]['key'];
$Response_CityKey = $content['reponse_data'][3]['key'];
$Response_StateKey = $content['reponse_data'][4]['key'];
$Response_CountryKey = $content['reponse_data'][5]['key'];
$Response_Age = $content['reponse_data'][0]['value'];
$Response_Gender = $content['reponse_data'][1]['value'];
$Response_Income = $content['reponse_data'][2]['value'];
$Response_City = $content['reponse_data'][3]['value'];
$Response_State = $content['reponse_data'][4]['value'];
$Response_Country = $content['reponse_data'][5]['value']

`

Answer 1

有人说“response_data”是无效的JSON。有一对额外的双引号包围数组。但我认为如果它是一个响应而不是一个手动输入的json，最好自动规范化接收的字符串，然后用Json_decode解码它主要是通过删除封闭的双。你可以使用下面的代码来实现它：

<?php
 // Identify the content as json
header("Content-Type: application/json; charset=UTF-8");

// get the contents of the JSON file
$data = file_get_contents("php://input");

//normalize the json in order to be properly decoded

$start=strpos($data,':',strpos($data,'response_data'));
$get=substr($data,$start+1,strrpos($data,'"')-$start);
$data=str_replace($get,trim(trim($get),'"'),$data);

//decode JSON data to PHP array
$content = json_decode($data, true);

//Fetch the details of customer

$Cust_Fname = $content['first_name'];
$Cust_Lname = $content['last_name'];
$Cust_Email = $content['email'];
$Street_Address = $content['address'];
$City = $content['city'];
$State = $content['state'];
$Country = $content['country'];
$Postal_Code = $content['zip_code'];

//also fetch the appended "array" of key/value fields...
$Response_AgeKey = $content['reponse_data'][0]['key'];
$Response_GenderKey = $content['reponse_data'][1]['key'];
$Response_IncomeKey = $content['reponse_data'][2]['key'];
$Response_CityKey = $content['reponse_data'][3]['key'];
$Response_StateKey = $content['reponse_data'][4]['key'];
$Response_CountryKey = $content['reponse_data'][5]['key'];
$Response_Age = $content['reponse_data'][0]['value'];
$Response_Gender = $content['reponse_data'][1]['value'];
$Response_Income = $content['reponse_data'][2]['value'];
$Response_City = $content['reponse_data'][3]['value'];
$Response_State = $content['reponse_data'][4]['value'];
$Response_Country = $content['reponse_data'][5]['value']

?>

Answer 2

"response_data"无效JSON。封闭数组有一对额外的双引号。删除封闭的双引号，然后它应该工作。

{
  "address": "4 Ficticious Ave",
  "city": "Miami",
  "country": "United States",
  "email": "[email protected]",
  "first_name": "Jane",
  "last_name": "Doe",
  "state": "FL",
  "zip_code": "03423",
  "response_data": [
    {
      "key": "7122",
      "value": "37-52"
    },
    {
      "key": "7123",
      "value": "Female"
    },
    {
      "key": "7124",
      "value": "$35,000 to $50,000 USD"
    },
    {
      "key": "6176",
      "value": "Miami"
    },
    {
      "key": "6177",
      "value": "FL"
    },
    {
      "key": "6179",
      "value": "United States"
    }
  ]
}