Barking up right tree?

[saintchuck]

I know zero about PHP.  In the past, I have been able to cobble together enough knowledge to get done what I needed to get done and hope that I can do the same with PHP.

What I am working with:

Wordpress allows RSS feeds by category: http://www.mysite.com/blog/wp-rss2.php?cat=5

and combining category RSS feeds into 1 feed: http://www.mysite.com/blog/wp-rss2.php?cat=22,26,38,42

What I am trying to do is:

1. Dynamic form displaying Categories and Sub-Categories with checkboxes (prefilled from previous entries)
2. Selecting Cat also selects all SubCats
3. Submission stores SubCat IDs in DB per user
4. Dynamic creation of Add to links (GoogleReader, Bloglines, ect) and text link for copy/paste

Seems straightforward to me and I realize "anything" is possible with PHP but is PHP the correct tool for the job?

[fert]

PHP would be the best tool for the job because wordpress is written in php.