Another common behavior in redirections is to construct a URL using the values entered in a parameter:

www.pineapple.com/index.php?r=store&country=mx 

The application constructs a URL as follows:

store.pineapple.com.mx 

But, if we modify a parameter, it can manipulate the result, as follows:

www.pineapple.com/index.php?r=admin&country=ca 
admin.pineapple.com.ca