.htaccess和$ _GET重写

Question

I am having an annoying issue. I have a script which uses the $_GET feature of php to get a variable from the url of the page. However, I need to know how to, first and foremost, make my page url go from

http://www.example.com/dir/dir2/page.php?value=something&anothervalue=somethingelse

to

http://www.example.com/something/dir2/somethingelse/page.php

This is confusing for me.

Now, here is the tough part: How do I $_GET the values of value and anothervalue while leaving any other url values intact at the end of page.php? Also, if a user visits http://www.example.com/something/dir2/somethingelse/page.php they will be shown the content for http://www.example.com/dir/dir2/page.php?value=something&anothervalue=somethingelse , and vice versa, right?

This is very important to the operation of my site, thanks for helping in advance! I don't know anything about .htaccess at all but I do know that it is possible to do this.

To clarify, doing this very confusing thing will actually make things much simpler in the long run as it will require much less recoding and will provide cleaner URLS.

Answer 1

This rule should do it:

RewriteCond %{REQUEST_URI} !^/dir/
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^([^/]+)/([^/]+)/([^/]+)/(.*) dir/$2/$4?value=$1&anothervalue=$3 [L,QSA]

It will rewrite requests of /something/dir2/somethingelse/page.php internally to /dir/dir2/page.php?value=something&anothervalue=somethingelse.

But that wouldn’t prevent from requesting the latter directly but just allowing an alias.

Redirecting requests of /dir/dir2/page.php?value=something&anothervalue=somethingelse externally to /something/dir2/somethingelse/page.php is also possible with mod_rewrite but requires a little more complex rule since the URL parameters can have an arbitrary order:

RewriteCond %{REQUEST_FILENAME} -f
RewriteCond %{QUERY_STRING} ^(([^&]*&)*)value=([^&]+)&?([^&].*)?$
RewriteCond %3&%1%4 ^([^&]+)&(([^&]*&)*)anothervalue=([^&]+)&?([^&].*)?$
RewriteRule ^dir/([^/]+)/(.*) /%1/$1/%4/$2?%2%5 [L,R=301]

As you see, that’s not really nice. A better solution would be to check with PHP what URL has been requested (see $_SERVER['REQUEST_URI']) and do the redirect with PHP (see header function).