如何转换 HTML 实体，如 –到他们的性格等价物? [英] How to convert HTML entities like – to their character equivalents?

问题描述

我正在创建一个文件，该文件将保存在本地用户的计算机上(不在网络浏览器中呈现).

I am creating a file that is to be saved on a local user's computer (not rendered in a web browser).

我目前正在使用 html_entity_decode，但这并没有转换像 –(即 n-dash)这样的字符，并且想知道还有什么其他功能我应该在用.

I am currently using html_entity_decode, but this isn't converting characters like – (which is the n-dash) and was wondering what other function I should be using.

例如，当文件被导入软件时，它会显示为 –，而不是 ndash 或只是一个 -.我知道我可以使用 str_replace，但是如果它发生在这个字符上，它可能会发生在许多其他字符上，因为数据是动态的.

For example, when the file is imported into the software, instead of the ndash or just a - it shows up as –. I know I could use str_replace, but if it's happening with this character, it could happen with many others since the data is dynamic.

推荐答案

您需要定义目标字符集.– 不是默认 ISO-8859-1 字符集中的有效字符，因此不会被解码.将 UTF-8 定义为输出字符集，它将解码:

You need to define the target character set. – is not a valid character in the default ISO-8859-1 character set, so it's not decoded. Define UTF-8 as the output charset and it will decode:

echo html_entity_decode('–', ENT_NOQUOTES, 'UTF-8');

如果可能，您应该避免使用 HTML 实体.我不知道编码数据来自哪里，但是如果您像这样将其存储在数据库或其他地方，那么您就做错了.始终存储 UTF-8 编码的数据，并且仅在必要时转换为 HTML 实体或以其他方式转义输出.

If at all possible, you should avoid HTML entities to begin with. I don't know where that encoded data comes from, but if you're storing it like this in the database or elsewhere, you're doing it wrong. Always store data UTF-8 encoded and only convert to HTML entities or otherwise escape for output when necessary.

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