Rewrite Mod Still Returns Original URL - php

Question

Using WamServer , I used Generate It! to over write a URL like
The original URL:
http://localhost/CMS/foo.php?id=2&slug=eyeglasses
The rewritten URL:
http://localhost/2/eyeglasses.php
The rule which site gave me is
RewriteEngine On
RewriteRule ^([^/]*)/([^/]*)\.php$ /CMS/foo.php?id=$1&slug=$2 [L]
but this is still returning original URL
http://localhost/CMS/foo.php?id=2&slug=eyeglasses
Can you please let me know what I am doing wrong?
Update
To be more clarify! I have an index.php which contains a link like
echo ''.$theName.'';
now we user landed in foo.php the URL looks like
http://localhost/CMS/foo.php?id=1&slug=eyeglassess
correct? what I would like to do is displaying the
http://localhost/2/eyeglasses.php
instead of original URL

Answer 1

You need a redirect rule to redirect old URL to pretty URL. This code should be in /CMS/.htaccess
RewriteEngine On
RewriteBase /CMS/
# redirect from actual URL to pretty one
RewriteCond %{THE_REQUEST} /CMS/+foo\.php\?id=([^\s&]+)&slug=([^\s&]+) [NC]
RewriteRule ^ %1/%2.php? [R=302,L,NE]
RewriteRule ^([^/]+)/([^/]+)\.php$ foo.php?id=$1&slug=$2 [L,NC,QSA]
However it is better to change your link code to new pretty link scheme.