PHP .htaccess -> 漂亮的 url（反向）

Question

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

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

我在问如果用户点击 index.php?id=1，是否有人有想法或知道如何自动重定向到那个漂亮的 url。 （如果您更改 url 中的标题，几乎就像这个站点 Stackoverflow）。

所以我的推测是……

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

2. 一个 php 文件来执行 htaccess 重写回原始的重定向...

结论：将<a href="index.php?id=1&.....">自动改为index/1/2

---

已解决

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]

Answer 1

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。 :)

_{用 Apache/2.2.3 测试。我想我编造了“硬重写”和“软重写”这两个术语。}

Answer 2

为什么不直接改变你的 index.php 文件呢？理论上，您可以通过这种方式进行更多的错误检查，允许变量按任何顺序排列，并且仍然可以路由到正确的结束位置。

<?php
    // Permanent redirection
    header("HTTP/1.1 301 Moved Permanently");
    header("Location: http://www.example.com/{$_GET['id']}/{$_GET['cat']}");

我这里没有做任何错误检查，但想给出一个基本的例子。

再想一想，我猜这是在 index.php 文件中添加功能，然后您想将其用于您的应用程序本身，因此可能最终会混淆代码中的功能。