23211 contextual link generator

Hi thanks for checking out my project. What I'm looking to do is create a script that would replace certain keywords in text content with links to other pages. There will be two peices of this. An admin console and an on page snippet. What's most important is the links are followable by search engines which means no JS linking. How I envision it working. There's a backend db that keeps all the words and adddresses where there's a 1 to many relationship. That being one keyword can have many page links. Then the snippet on the page would check with the db if any keywords are found that match the db. If yes then we have it create a link out of that page. I'm not sure of the easiest way to do this, ideally I'd like it to work on any page. However I do use php pages so it could be done when the text is pulled. Again thank you for looking at my project. Jason