为什么在对URL进行编码时JSON编码器会添加转义字符? [英] Why does JSON encoder adds escaping character when encoding URLs?

问题描述

我在PHP中使用json_encode对URL进行编码

I am using json_encode in PHP to encode an URL

$json_string = array ('myUrl'=> 'http://example.com');
echo json_encode ($json_string);

上面的代码生成以下JSON字符串:

The above code generates the following JSON string:

{"myUrl":"http:\/\/example.com"}   

而不是

{"myUrl":"http://example.com"}

我只是新手，哪个输出正确? JSON解析器能够正确评估第二个输出吗?

I am just newbie, which output is correct? Is JSON parser able to evaluate the second output correctly?

推荐答案

根据 http://www.json.org /，尽管JavaScript并非严格要求，但应该转义该字符:

According to http://www.json.org/, one should escape that character, although it is not strictly necessary in JavaScript:

也请阅读php.net上的此相关的错误报告，以进行简要讨论

Also read this related bug report on php.net for a brief discussion.

请参见 RFC 中的2.5:

所有Unicode字符都可以放置 在引号内，但 必须转义的字符: 引号，反固相线和 控制字符(U + 0000至 U + 001F).

All Unicode characters may be placed within the quotation marks except for the characters that must be escaped: quotation mark, reverse solidus, and the control characters (U+0000 through U+001F).

任何字符都可以转义.

所以听起来好像不需要被转义，但可以这样，并且网站(以及RFC中的文本图)说明它已被转义.

So it doesn't sound like it needs to be escaped, but it can be, and the website (and a text diagram in the RFC) illustrates it as being escaped.

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