PHP .htaccess -> 漂亮的 url（相反）

我知道如何进行 URL 重写，例如：www.example.com/index.php?id=1&cat=3 to www.example.com/1/3/（管他呢）。我知道。

我不知道到底如何更改所有页面中的整个链接以链接到漂亮的 URL。我网站的所有链接都是老式的（<a href="index.php?id=1&cat=2">）并且有很多。

我问是否有人有想法或知道如何在用户单击index.php?id=1 时自动重定向到该漂亮的网址。 （如果你更改网址中的标题，几乎就像这个网站 Stackoverflow）。

所以我的推测是...

1. 使用.htaccess读取index.php?id=1&cat=2来重写自己再次解释的index/1/3（奇怪）

2. 一个 php 文件来执行 htaccess 重写回原始的重定向...

结论：改变<a href="index.php?id=1&.....">自动到index/1/2

SOLVED

Options +FollowSymLinks
RewriteEngine On
RewriteBase /

##################################
# This turns index.php?id=1&cat=2 into index/1/2 and then back 'transparent' into    index.php?id=1&cat=2 if you have old fashioned
# links in your site and don't want to change them :)


# Avoid mod_rewrite infinite loops 
# This is critical if you want to use this code

RewriteCond %{ENV:REDIRECT_STATUS} 200
RewriteRule .* - [L]

# Hard-rewrite ("[R]") to "friendly" URL.
# Needs RewriteCond to match original querystring.
# Uses "?" in target to remove original querystring,
#   and "%n" backrefs to move its components.
# Target must be a full path as it's a hard-rewrite.
RewriteCond %{QUERY_STRING} ^id=(\d+)&cat=(\d+)$
RewriteRule ^index.php$ http://localhost/index/%1/%2/? [L,R]

# Soft-rewrite from "friendly" URL to "real" URL.
# Transparent to browser.
# Won't re-trigger the above rewrite, though I'm
#   not really sure why! The order of the rules
#   doesn't seem to make a difference.
RewriteRule ^index/(\d+)/(\d+)/$ index.php?id=$1&cat=$2 [L]

RewriteEngine on

# Prevents browser looping, which does seem
#   to occur in some specific scenarios. Can't
#   explain the mechanics of this problem in
#   detail, but there we go.
RewriteCond %{ENV:REDIRECT_STATUS} 200
RewriteRule .* - [L]

# Hard-rewrite ("[R]") to "friendly" URL.
# Needs RewriteCond to match original querystring.
# Uses "?" in target to remove original querystring,
#   and "%n" backrefs to move its components.
# Target must be a full path as it's a hard-rewrite.
RewriteCond %{QUERY_STRING} ^id=(\d+)&cat=(\d+)$
RewriteRule ^index\.php$ http://example.com/index/%1/%2/? [L,R]

# Soft-rewrite from "friendly" URL to "real" URL.
# Transparent to browser.
RewriteRule ^index/(\d+)/(\d+)/$ /index.php?id=$1&cat=$2

当然，理想情况下，您只需修复链接，然后只需要软重写。 :)

_{Tested with Apache/2.2.3. I think I made up the terms "hard-rewrite" and "soft-rewrite".}