My website is about finished, but this past weekend something occurred to me that I fear will break all of the code I have written!!

The majority of my website revolves around Articles, and right now I have this simple structure...
Code:
WebRoot (directory)
	articles (directory)
		index.php
		article.php
		add_comment.php
		edit_comment.php
		rate_article.php
Currently, all of my Articles are accessed from this URL...

http://local.debbie/articles/


The problem is that as more and more Articles are added, there will be a need to break things up into sections, just like a newspaper (e.g. Current Events, World, Local, Sports, Money, Entertainment, etc.)


Unfortunately, all of the files in my "articles" directory contain code like this...

PHP Code:
        $_SESSION['articleReturnPath'] = "/articles/$slug"
PHP Code:
        <li><a href="#here">Make a Comment</a></li>
        <li><a href="<?php echo "/articles/join-article-thread/$slug"?>">Subscribe to Thread</a></li>
        <li><a href="<?php echo "/articles/rate-this-article/$slug"?>">Rate this Article</a></li>
PHP Code:
        $_SESSION['returnToPage'] = "/articles/edit-comment/$slug/$user/$commentID"

So, since all of my scripts which support Articles revolve around this paradigm, I fear I am screwed if I add new sections or sub-divide things...

What would I need to do if I wanted to switch from URL's like this....

http://local.debbie/articles/postage-meters-can-save-you-money
http://local.debbie/articles/consider-becoming-an-s-corp
http://local.debbie/articles/when-to-hire-a-consultant


To something like either this...
http://local.debbie/articles/finance/postage-meters-can-save-you-money
http://local.debbie/articles/legal/consider-becoming-an-s-corp
http://local.debbie/articles/management/when-to-hire-a-consultant

OR...

http://local.debbie/finance/postage-meters-can-save-you-money
http://local.debbie/legal/consider-becoming-an-s-corp
http://local.debbie/management/when-to-hire-a-consultant




Thanks,


Debbie