Is there any way of replacing a string on a page, via PHP without having to modify the database in anyway...?

Basically I have a site that sells a certain type of dress, and I want to make a duplicate site on another domain name using the same database, but at the moment on one site where every dress is a type of 'body con dress' I want every product, heading etc that contains the word 'body con' to say 'Going Out' instead.

Is this even possible?