Passing Variables a different way

I am passing variables to two scripts. One script requires the variable to be in a normal way, like:

url.php?variable=oneword%20twowords

The other script requires the variables to be like:

url.php?variable=oneword,twowords

There is no way for me to change actual scripts because they are external data applications which are out of my control. Is there a way for me to $_GET the variables in different ways. For example, the default is:

url.php?variable=oneword%20twowords

But I need that to $_GET the variables with commas separating them, so it's kind of, perhaps simply replacing the (%20) with a (,).

My second question here is, will it be handled differently if it was internal, using a $_Post instead of $_Get

Thanks for an insight into the problem in advance.

 

1. no its fine with the %20, upon entering of variable there must have a code that replaces %20 with space.
str_replace("%20"," ", $_GET['var']);
2. nope it will be the same, all declarations of $_GET or $HTTP_GET_VARS must be replace with $_POST or $HTTP_POST_VARS

 

Thanks a lot.. That's exactly what I needed, the string replace on the $_GET