如何连接code使用mod_rewrite和放大器特殊字符; Apache的？ [英] How to encode special characters using mod_rewrite & Apache?

问题描述

我想有pretty网址为我的标签系统与所有的特殊字符一起： + ，＆安培; ，＃，％和 = 。有没有办法用mod_rewrite的做到这一点，而无需增加一倍EN code中的链接？

我注意到，delicious.com和计算器似乎能够单独处理EN codeD特殊字符。什么是神奇公式？

下面是什么，我希望发生的一个例子：

  http://www.foo.com/tag/c%2b%2b
 

会引发以下重写规则：

 重写规则^标签/(.*）script.php的？标签= $ 1
 

和标签的价值将是C ++

阿帕奇/ mod_rewrite的正常运行不会像这样工作，因为它似乎把加号变成空格。如果我是双带code中的加号'％252B'然后我得到了想要的结果 - 但它使混乱的URL和似乎pretty哈克给我

。

解决方案

  

阿帕奇/ mod_rewrite的正常运行不会像这样工作，因为它似乎把加号变成空格。

我不认为这是相当发生了什么。 Apache是​​在路径一部分％，以双品+ S解码，因为+是一个有效的字符那里。它在请求让mod_rewrite的外观之前做到这一点。

于是mod_rewrite的改变你的请求'/标签/ C ++到运行script.php？标签= C ++。但在应用程序/ x-WWW的形式连接codeD格式的查询字符串组成部分，排出的规则是那些在路部分应用很略有不同。特别是，'+'是空间的简写（这也可以同样是EN codeD为％20，但是这是一个古老的行为，我们将永远无法改变现在）。

所以PHP的形式读code接收C ++和转储它在你的_GET为C-空间的空间。

看起来解决这个方式是使用rewriteflagB。见<一href=\"http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html#rewriteflags\">http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html#rewriteflags - 好奇它使用或多或少相同的例子

 重写规则^标签/(.*)$ /script.php?tag=$1 [B]
 

I would like to have pretty URLs for my tagging system along with all the special characters: +, &, #, %, and =. Is there a way to do this with mod_rewrite without having to double encode the links?

I notice that delicious.com and stackoverflow seem to be able to handle singly encoded special characters. What's the magic formula?

Here's an example of what I want to happen:

http://www.foo.com/tag/c%2b%2b

Would trigger the following RewriteRule:

RewriteRule ^tag/(.*)   script.php?tag=$1

and the value of tag would be "c++"

The normal operation of apache/mod_rewrite doesn't work like this, as it seems to turn the plus signs into spaces. If I double encode the plus sign to '%252B' then I get the desired result - however it makes for messy URLS and seems pretty hacky to me.

解决方案

The normal operation of apache/mod_rewrite doesn't work like this, as it seems to turn the plus signs into spaces.

I don't think that's quite what's happening. Apache is decoding the %2Bs to +s in the path part since + is a valid character there. It does this before letting mod_rewrite look at the request.

So then mod_rewrite changes your request '/tag/c++' to 'script.php?tag=c++'. But in a query string component in the application/x-www-form-encoded format, the escaping rules are very slightly different to those that apply in path parts. In particular, '+' is a shorthand for space (which could just as well be encoded as '%20', but this is an old behaviour we'll never be able to change now).

So PHP's form-reading code receives the 'c++' and dumps it in your _GET as C-space-space.

Looks like the way around this is to use the rewriteflag 'B'. See http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html#rewriteflags - curiously it uses more or less the same example!

RewriteRule ^tag/(.*)$ /script.php?tag=$1 [B]

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