Question

我有这个PHP代码：

<?php
session_start();
$data = json_decode($_SESSION['data']);
print_r($data);
?>

从会话中提供我的数据。我打印它和

stdClass Object ( [_readyCallbacks] => Array ( [0] => ) [http] => stdClass Object ( [_cookie] => SESSION_ID=92f5d674-2430-4ee1-bfaf-04d7be2d32a7; M6UserName=8290 ) [magisterSchool] => stdClass Object ( [id] => 2a685bd6-4cab-4d51-bf48-07ac41ad6c7d [name] => CS Vincent van Gogh [url] => https://csvvg.magister.net ) [username] => 8290 [_keepLoggedIn] => 1 [_ready] => 1 [_magisterLoadError] => [_sessionId] => 92f5d674-2430-4ee1-bfaf-04d7be2d32a7 [_id] => 8982 [_personUrl] => https://csvvg.magister.net/api/personen/8982 [_pupilUrl] => https://csvvg.magister.net/api/leerlingen/8982 [_profileInfo] => stdClass Object ( [_firstName] => Robin [_lastName] => Noord [_birthDate] => 1999-01-23T00:00:00.000Z [_id] => 8982 [_officialFirstNames] => Robin [_initials] => R. [_namePrefix] => van der [_officialSurname] => Noord [_birthSurname] => [_birthNamePrefix] => [_useBirthname] => [_isChild] => ) [_messageFolders] => Array ( [0] => stdClass Object ( [_name] => Postvak IN [_unreadMessagesCount] => 0 [_id] => 1 [_parentId] => 0 ) [1] => stdClass Object ( [_name] => Verzonden items [_unreadMessagesCount] => 0 [_id] => 2 [_parentId] => 0 ) [2] => stdClass Object ( [_name] => Verwijderde items [_unreadMessagesCount] => 0 [_id] => 3 [_parentId] => 0 ) [3] => stdClass Object ( [_name] => Mededelingen [_unreadMessagesCount] => 0 [_id] => 4 [_parentId] => 0 ) ) )

所以我想知道，我如何得到，例如firstName（profileInfo）中的值，例如username？

我最初得到的数据只是JSON：

{
  "_readyCallbacks": [
    null
  ],
  "http": {
    "_cookie": "SESSION_ID=92f5d674-2430-4ee1-bfaf-04d7be2d32a7; M6UserName=8290"
  },
  "magisterSchool": {
    "id": "2a685bd6-4cab-4d51-bf48-07ac41ad6c7d",
    "name": "CS Vincent van Gogh",
    "url": "https:\/\/csvvg.magister.net"
  },
  "username": "8290",
  "_keepLoggedIn": true,
  "_ready": true,
  "_magisterLoadError": null,
  "_sessionId": "92f5d674-2430-4ee1-bfaf-04d7be2d32a7",
  "_id": 8982,
  "_personUrl": "https:\/\/csvvg.magister.net\/api\/personen\/8982",
  "_pupilUrl": "https:\/\/csvvg.magister.net\/api\/leerlingen\/8982",
  "_profileInfo": {
    "_firstName": "Robin",
    "_lastName": "Noord",
    "_birthDate": "1999-01-23T00:00:00.000Z",
    "_id": 8982,
    "_officialFirstNames": "Robin",
    "_initials": "R.",
    "_namePrefix": "van der",
    "_officialSurname": "Noord",
    "_birthSurname": null,
    "_birthNamePrefix": null,
    "_useBirthname": false,
    "_isChild": false
  },
  "_messageFolders": [
    {
      "_name": "Postvak IN",
      "_unreadMessagesCount": 0,
      "_id": 1,
      "_parentId": 0
    },
    {
      "_name": "Verzonden items",
      "_unreadMessagesCount": 0,
      "_id": 2,
      "_parentId": 0
    },
    {
      "_name": "Verwijderde items",
      "_unreadMessagesCount": 0,
      "_id": 3,
      "_parentId": 0
    },
    {
      "_name": "Mededelingen",
      "_unreadMessagesCount": 0,
      "_id": 4,
      "_parentId": 0
    }
  ]
}

主要问题在于它是一个嵌套的JSON，包含{}＆＃39; s和[]＆＃39; s和_＆＃39; s，这些都让它有点混乱。

Answer 1

您可以使用

访问它

$data['http'] ['username']

在json中，使用{}将对象括起来，并在使用json_decode()时将其翻译成密钥对数组

Answer 2

尝试以这种方式访问stdClass对象属性：

// assumming that $json_str is your initial json string
$obj = json_decode($json_str);

var_dump($obj->_profileInfo->_firstName);

// the output:
string(5) "Robin"

Answer 3

试试这个：$data->_profileInfo->_firstName;

Answer 4

您可以解码为对象和访问对象属性：

$data = json_decode($_SESSION['data']);
echo $data->_profileInfo->_firstName

或解码为关联数组，然后：

$data = json_decode($_SESSION['data'], true);
echo $data['_profileInfo']['_firstName']

PHP搜索解码的JSON

4 个答案: