If mod_rewrite cannot do this, then can you tell me what I can do to hide something like:

http://www.mysite.com/index.php?identity=8
to
http://www.mysite.com/index.php

The point of it is, to not allow users to know what identity=8 part as the variable for identity would be generated randomly by the script itself on index.php, which stores it using GET into a variable $identifynum. The point of it is, I do not want users to be abusing the script by typing in randomly identity=9, identity=10, etc in the browser to execute it with their number. by their own leisure to execute the script. I figured by using mod_rewrite, I would be able to hide the variables as I believe it is possible to hide them by rewriting the actual identity=8 to something like id=8 so that users would not be able to see any of the args in the browser line as they would only see the index.php, while still enabling me to use the $_GET from the url that it is being redirected to.

Assume that identity was a page ID.
So you would want to access it with something like "page/8/" in your (A HREF).

Your rule would be like this:

RewriteRule ^page/([0-9]+)/ index.php?page=$1

That means the link must start with 'page/' or else tthe rule will be ignored, the accept a variable from 0-9 only but have as many digits as you want.

that will call index.php and apply your numeric value to $1.

Having said all that, it doesn't really change the fact that the end user can change the values themselves: you're just moving the point of the change.

If you want to associate a number with a particular user without them being able to change it (easily), look into storing the number in a session instead.

Can you show me an example of storing multiple variables into multiple unique sessions and actually passing them into a variable on another page? All I know is POST and GET.

PHP Code:

session_start();

if (user_logged_ok()) {
   $_SESSION['user'] = get_user_record_from_db();
   redirect();
}

if (isset($_SESSION['user'])) {
   get_user_data($_SESSION['user']->id);
}
else {
   echo 'You are not logged in!';
} 


Something like that