Displaying hidden text using PHP

I am trying to come up with a php if statement for my site. I have a page called "research". There is text on this page with a link which says "contact me" This link links through to my contact page. Now, I need an if statement to say that if you are on the research page and you click on the contact me link, I need some text on the contact me page to be hidden and only be visible when you are on the contact page.

Is this possible???

Thanks