问题json_encode utf-8 [英] Problem json_encode utf-8

问题描述

我有一个有特殊字符的json_encode函数的问题。

I have a problem with json_encode function with special characters.

例如，我尝试这样：

$string="Svrček";

echo "ENCODING=".mb_detect_encoding($string); //ENCODING=UTF-8

echo "JSON=".json_encode($string); //JSON="Svr\u010dek"

如何正确显示字串， JSON =Svrček？

What can I do to display the string correctly, so JSON="Svrček"?

非常感谢。

推荐答案

json_encode（）实际上并不输出 JSON 。它输出一个javascript字符串。 （当你给它一个对象或一个数组进行编码时，它输出JSON。）这很好，因为一个javascript字符串是你想要的。

json_encode() is not actually outputting JSON there. It's outputting a javascript string. (It outputs JSON when you give it an object or an array to encode.) That's fine, as a javascript string is what you want. I'm just being strict about terminology.

在javascript（和JSON）中，č可能会被转义为 \u010 。两者是等价的。因此， json_encode（）是做什么的。但是，如果传输是安全的Unicode编码（通常是UTF-8），也没有必要。如果你想关闭转义，你可以这样做： json_encode（'Svrček'，JSON_UNESCAPED_UNICODE）。请注意，在PHP 5.4.0中引入了标志 JSON_UNESCAPED_UNICODE ，并且在早期版本中不可用。

In javascript (and in JSON), č may be escaped as \u010. The two are equivalent. So there's nothing wrong with what json_encode() is doing. However, if the transfer is safely in a Unicode encoding (UTF-8, usually), there's no need for it either. If you want to turn off the escaping, you can do so thus: json_encode('Svrček', JSON_UNESCAPED_UNICODE). Note that the flag JSON_UNESCAPED_UNICODE was introduced in PHP 5.4.0, and is unavailable in earlier versions.

方式，与@onteria_所说的相反， JSON 使用UTF-8 ：

By the way, contrary to what @onteria_ says, JSON does use UTF-8:

JSON文本的字符编码始终是Unicode。 UTF-8是唯一有意义的编码，但也允许使用UTF-16和UTF-32。

The character encoding of JSON text is always Unicode. UTF-8 is the only encoding that makes sense on the wire, but UTF-16 and UTF-32 are also permitted.

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