Rewriterule Dupe content problem

In Rob's warning thread:
http://www.webforumz.com/webforumz-c...your-sites.htm

It tells us that the rewrite rules can be exploited.
But how can you counter this?

my rule is something like this:

Code: Select all

RewriteRule ^blog/([0-9]+)-[a-zA-Z-]+$ blog.php?id=$1 [L]

which means all the following will work:
7-contact-lenses
7-Contacts
7-lallalalla

How can I stop this so that only the first will work? Via PHP somehow?
Help very much appreciated.

You could use PHP or just change the rule like so:

Code: Select all

 RewriteRule ^blog/([0-9]+)-[a-zA-Z]+$ blog.php?id=$1 [L]

Jan, I don't see what's different in that rule or how it will stop duplicate content.


I think I should of been more clear, I only want one string to work per string like so:
1-welcome
2-web-development
etc.

But then I want the following to not work (or redirect to the real one (1-welcome))
1-web-design

Otherwise, for 1-welcome and 1-web-design, the same page will be brought up and indexed by google twice meaning I get dupe content

HE? I don't quite understand what you want....

Did you check the link in my first post?

yes. what does the link have to do with your rewrite rule?

Because if I have:
/blog/7-welcome
The following will also work:
/blog/7-duplicate
/blog/7-anything-can-go-here

So if people were to link to my blog via those links, google would index them as duplicate content.
Hope that makes sense

Well, the answer to your question is to be found in Rob's post - make your pages "self-aware of their own URL's". I would use PHP to catch this.

How can you check what is used to access the page then?

$_SERVER['QUERY_STRING'] or $_SERVER['REQUEST_URI'].
not quite sure which. check this out...

Thanks will try now

Incase anyone wants to do the same, it's

PHP: Select all

$_SERVER['REQUEST_URI'];