Question

我在这里有一个小问题：

我要显示的是：

{"accounts":
{"n":"1001","d":"2018-06-30","u":"","e":"","r":"123112"},
{"n":"1002","d":"2018-06-30","u":"","e":"","r":"123112"}, 
{"n":"1005","d":"2018-06-30","u":"","e":"","r":"123112"}
}

一开始我有一个简单的空数据库行，没有内容。然后我要运行此脚本：

$accountff["accounts"] = array( 'n' => 1002, 
                            'd' => 2018-07-02,
                            'u' => ,
                            'e' => ,
                            'r' => );

$txid_json = json_encode($accountff, JSON_FORCE_OBJECT);

这很好，输出为：

{"accounts":{"n":1002,"d":"2018-07-02","u":"","e":"","r":""}}

但是每次我想使用此脚本添加新的“帐户”时：

  $account['n'] = $post_id;
  $account['d'] = date('Y-m-d');
  $mysqljson = json_decode($user_accounts,true);
  array_push($mysqljson['accounts'], $account); 
  $txid_json = json_encode($mysqljson, JSON_FORCE_OBJECT);

（变量$user_accounts是保存JSON的列。）

输出为：

{"accounts":{"n":1002,"d":"2018-07-02","u":"","e":"","r":"","0":{"n":1002,"d":"2018-07-02","u":"","e":"","r":""}}}

这实际上使我发疯……我不知道“ 0”是从哪里来的。

Answer 1

您显示的内容不是有效的JSON。对象中的所有内容都必须为key: value对，但是除第一个对象外，您没有其他对象的键。

您似乎真的希望accounts属性是一组帐户，所以应该是：

$accountff["accounts"] = array(
    array( 'n' => 1002, 
            'd' => 2018-07-02,
            'u' => ,
            'e' => ,
            'r' => )
);

然后添加一个新帐户，您需要这样做：

$accountff["accounts"][] = $account;

等效于：

array_push($accountff["accounts"], $account);

JSON将如下所示：

{"accounts": [
    {"n":"1001","d":"2018-06-30","u":"","e":"","r":"123112"},
    {"n":"1002","d":"2018-06-30","u":"","e":"","r":"123112"}, 
    {"n":"1005","d":"2018-06-30","u":"","e":"","r":"123112"}
    ]
}

如果您使用JSON_FORCE_OBJECT，它将看起来像这样：

{"accounts": {
    "0": {"n":"1001","d":"2018-06-30","u":"","e":"","r":"123112"},
    "1": {"n":"1002","d":"2018-06-30","u":"","e":"","r":"123112"}, 
    "2": {"n":"1005","d":"2018-06-30","u":"","e":"","r":"123112"}
    }
}

PHP从新数组追加到JSON数组

1 个答案: