在.htaccess中将大写字母转换为小写

Question

我正在尝试将所有大写 URL 转换为小写并为其添加重定向规则，但它不起作用。这是我的用例

https://www.example.com/CT 301 redirect to => https://www.example/test
https://www.example.com/cT 301 redirect to => https://www.example/test
https://www.example.com/ct 301 redirect to => https://www.example/test

我一直在 https://htaccess.madewithlove.be/ 中测试以下规则，如果我使用规则测试 URL https://example.com/Ct，则输出 URL 仍然是 https://example.com/Ct，它应该是 https://example.com/ct。我注意到它会将 Captial C 转换为较低的 c 但这条规则 RewriteRule [A-Z] - [N] 将其转换回 https://example.com/Ct

<IfModule mod_rewrite.c>
  RewriteEngine on

RewriteBase /
# If there are caps, set HASCAPS to true and skip next rule
RewriteRule [A-Z] - [E=HASCAPS:TRUE,S=1]
# Skip this entire section if no uppercase letters in requested URL
RewriteRule ![A-Z] - [S=28]
# Replace single occurance of CAP with cap, then process next Rule.
RewriteRule ^([^A]*)A(.*)$ $1a$2
RewriteRule ^([^B]*)B(.*)$ $1b$2
RewriteRule ^([^C]*)C(.*)$ $1c$2
RewriteRule ^([^D]*)D(.*)$ $1d$2
RewriteRule ^([^E]*)E(.*)$ $1e$2
RewriteRule ^([^F]*)F(.*)$ $1f$2
RewriteRule ^([^G]*)G(.*)$ $1g$2
RewriteRule ^([^H]*)H(.*)$ $1h$2
RewriteRule ^([^I]*)I(.*)$ $1i$2
RewriteRule ^([^J]*)J(.*)$ $1j$2
RewriteRule ^([^K]*)K(.*)$ $1k$2
RewriteRule ^([^L]*)L(.*)$ $1l$2
RewriteRule ^([^M]*)M(.*)$ $1m$2
RewriteRule ^([^N]*)N(.*)$ $1n$2
RewriteRule ^([^O]*)O(.*)$ $1o$2
RewriteRule ^([^P]*)P(.*)$ $1p$2
RewriteRule ^([^Q]*)Q(.*)$ $1q$2
RewriteRule ^([^R]*)R(.*)$ $1r$2
RewriteRule ^([^S]*)S(.*)$ $1s$2
RewriteRule ^([^T]*)T(.*)$ $1t$2
RewriteRule ^([^U]*)U(.*)$ $1u$2
RewriteRule ^([^V]*)V(.*)$ $1v$2
RewriteRule ^([^W]*)W(.*)$ $1w$2
RewriteRule ^([^X]*)X(.*)$ $1x$2
RewriteRule ^([^Y]*)Y(.*)$ $1y$2
RewriteRule ^([^Z]*)Z(.*)$ $1z$2
# If there are any uppercase letters, restart at very first RewriteRule in file.
RewriteRule [A-Z] - [N]
# If a conversion has occurred then issue an external redirect
RewriteCond %{ENV:HASCAPS} TRUE
RewriteRule ^/?(.*) /$1 [N]

RewriteCond %{HTTP_HOST} ^((?:www\.)?example\.com)$ [NC]
RedirectMatch 301 ^/ct$ https://www.example/test

</IfModule>

感谢任何帮助识别此规则的问题。

Answer 1

如果/CT、/cT、/Ct、/ct 中的任何一个必须重定向到/test/，那么它可以通过类似NC 标志的简单规则来完成：

RewriteRule ^ct/?$ /test [L,NC,R=301]

Answer 2

使用 RewriteMap https://httpd.apache.org/docs/2.4/rewrite/rewritemap.html#int

RewriteMap 指令定义了一个外部函数，该函数可以在 RewriteRule 或 RewriteCond 指令的上下文中调用，以执行过于复杂或过于特殊而无法仅通过正则表达式执行的重写。

文档提供了这个 URL 小写示例

将 URI 重定向到其自身的全小写版本

RewriteMap lc int:tolower
RewriteRule "(.*)" "${lc:$1}" [R]