php-翻译“％C3％BC"；到 [英] php - translating "%C3%BC" to ü

问题描述

在页面中，我有以下引用:

In a page, I have this reference:

<a href="Schulte_Einf%C3%BChrung.pdf">Page</a>

我编写了一个函数来查看所引用的文件是否存在.但是在这种情况下，文件名为

I've written a function to see if the file that is referenced to exists. But in this case, the file is named

Schulte_Einführung.pdf

我知道C3 BC是ü的UTF-8编码，但是如何解码%C3%BC并将其转换为ü?所有常见的功能，例如utf_decode等，什么都不做.

I know that C3 BC is the UTF-8 encoding of ü, but how can I decode %C3%BC and turn it into ü? All the usual functions like utf_decode and so on don't do anything.

我无法更改文件名(因为我是从备份文件中提取文件名的)，并且我也无法更改编码，因为这会导致页面中断.那么有没有办法比较Schulte_Einf%C3%BChrung.pdf和Schulte_Einführung.pdf以便它们相等?

I can't change the filename (because I pull it from a backup file), and I also can't change the encoding because then the page could break. So is there a way to compare Schulte_Einf%C3%BChrung.pdf and Schulte_Einführung.pdf so that they will be equal?

推荐答案

我知道C3 BC是ü的UTF-8编码

I know that C3 BC is the UTF-8 encoding of ü

不是.这是UTF-8编码的ASCII描述.

It isn't. It is an ASCII description of the UTF-8 encoding.

由于它是用URL编码的数据，因此请使用 urldecode函数.

Since it is data encoded in a URL, use the urldecode function.

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