將另一個對象轉換爲json的多維對象

Question

我有一個對象需要轉換爲json以便與API交互，因此我必須維護對象和數組結構。看看下面：

stdClass Object 
(
[method] => something 
[params] => Array 
    (
     [instructions] => stdClass Object 
      (
       [a] => 1 
       [b] => 2 
      ) 
    ) 
) 

它傳遞給json_encode()但第二個對象instructions已被丟失，只是把它變成另一個數組：

{ "method":"something", 
    "params":{ 
    "instructions": { "a":1,"b":2 } 
    } 
} 

當我應該結束了，方括號指令等：

{ "method":"something", 
    "params":{ 
    "instructions": [ { "a":1,"b":2 } ] 
    } 
} 

我注意到有一個像JSON_FORCE_OBJECT這樣的預定義常量，但添加了json_encode作爲選項似乎有0效果。我錯過了什麼？

Answer 1

您的instructions要求是對象（即你使用[ { } ]表達）的陣列，但將其設置爲僅具有兩個字段中的對象。請嘗試以下操作：

$arr = (object)[ 
    'method' => 'something', 
    'params' => [ 
     'instructions' => [ 
      [ 
       'a' => 1, 
       'b' => 2 
      ] 
     ] 
    ] 
]; 
echo json_encode($arr); 

輸出：

{ 
    "method": "something", 
    "params": { 
     "instructions": [ 
      { 
       "a": 1, 
       "b": 2 
      } 
     ] 
    } 
} 

Answer 2

首先，json_encode工作得很好：

$x = (object) [ 
    "method" => "something", 
    "params" => [ 
     "instructions" => (object) [ 
     "a" => 1, 
     "b" => 2 
    ] 
    ] 
]; 

echo json_encode($x); 

// {"method":"something","params":{"instructions":{"a":1,"b":2}}} 

這是不是有效的JSON

"instructions": [ "a":1,"b":2 ] 

有作爲根據關聯數組在JavaScript

---

沒有這樣的事你的評論和編輯你想改變陣列爲

$x = (object) [ 
    "method" => "something", 
    "params" => [ 
     "instructions" => [ 
     (object) [ 
      "a" => 1, 
      "b" => 2 
     ] 
    ] 
    ] 
];