这个json怎么无效？答案

【问题标题】：How is this json invalid?这个json怎么无效？
【发布时间】：2015-09-30 20:02:54
【问题描述】：

我实际上对这个 json 是如何无效的感到困惑。我有一个来自更大 json 集的 json：

               ...
               "open_until":{  
                  "date":"2015-10-16 00:00:00",
                  "timezone_type":3,
                  "timezone":"America\/Edmonton"
               },
               "ffba_access_code":"1234",
               "overview_content":" 
Elevator Pitch<\/h4>\r\n 
Fedilus Funds gives investors the ability to participate in the growth of the United States un-banked sector by deploying 'automated commerce machines' in high traffic areas. This is a blended investment that distributes monthly principal and interest back to the investor and once the term has ended, a percentage of revenue is distributed continuously. You are purchasing a portfolio of advanced ATM's that offer a wide range of financial services coupled with a strong management team.<\/p>\r\n\r\n 

This is a USD investment with monthly distributions remitted in USD.<\/p>",
               .....

当我把它通过 json 格式化程序时，我被告知：

" 
    Elevator Pitch<\/h4>\r\n 
    Fedilus Funds gives investors the ability to participate in the growth of the United States un-banked sector by deploying 'automated commerce machines' in high traffic areas. This is a blended investment that distributes monthly principal and interest back to the investor and once the term has ended, a percentage of revenue is distributed continuously. You are purchasing a portfolio of advanced ATM's that offer a wide range of financial services coupled with a strong management team.<\/p>\r\n\r\n 

    This is a USD investment with monthly distributions remitted in USD.<\/p>"

是“无效”的“违规”部分

我从 php.ini 中的数据库中获取此权限。当我将其拉出以使其符合要求时，我应该对这个特定的数据库字段做些什么吗？

【问题讨论】：

您是否尝试将htmlspecialchars 用于您的overview_content 文本？
如果我没记错的话，换行符是无效的……
@Andre 所以我从数据库中提取了数据，如何使其有效？
通过json_encode。让我反过来问这个问题：为什么要“手动”编码？
@Andre：你没记错：json.org/string.gif 换行符是一个控制字符。

标签： php mysql json

【解决方案1】：

您不能在属性值（或为此的属性）中使用换行符。

这个例子 lints 很好：

...
"open_until": {
  "date": "2015-10-16 00:00:00",
  "timezone_type": 3,
  "timezone": "America/Edmonton"
},
"ffba_access_code": "1234",
"overview_content": "Elevator Pitch</h4>\r\n Fedilus Funds gives investors the ability to participate in the growth of the United States un-banked sector by deploying 'automated commerce machines' in high traffic areas. This is a blended investment that distributes monthly principal and interest back to the investor and once the term has ended, a percentage of revenue is distributed continuously. You are purchasing a portfolio of advanced ATM's that offer a wide range of financial services coupled with a strong management team.</p>\r\n\r\n This is a USD investment with monthly distributions remitted in USD.</p>"
...

【讨论】：

【解决方案2】：

JSON 不允许真正的换行符。您需要将所有换行符替换为\n。

【讨论】：

【解决方案3】：

关于需要转义的换行符，上面的答案是正确的。查看 php 的内置 json_encode() 函数。

另外，这个答案有一些关于换行和转义反斜杠的有用信息：Multiline strings in JSON

【讨论】：

【解决方案4】：

正如一些人指出的那样，将来自数据库的内容包装在 htmlspecialchars 中可以解决问题。

【讨论】：

@VolkerK 嗯，我是根据来自数据库的内容完成的
您的意思是问题中显示的错误json已经在数据库中；你从 text/varchar 字段中提取它？在那种情况下：是什么将无效编码（非）json放入数据库中？无论如何，htmlspecialchars() 对换行符/提要字符没有任何作用。此函数“处理”的字符为&、"、“", >