Ok, here's a start:
http://voidmain.is-a-geek.net/files/squidcon/
You'll find "squidcon.php" and "squidcon.sudoers" in the above directory.
- have Apache/PHP running on your squid server
- put the php file somewhere under your web root and rename it to have a *.php extension
-- I would put it in it's own directory and name it "index.php" and make sure that "index.php" is listed as a directory index file in your Apache configuration
-- I would also restrict access to it with a ".htaccess" file.
- edit the php script and check to make sure the config vars at the top are correct (your ACL directory and filename)
- make sure your ACL file is writable by your apache user
- if you want the PHP script to automatically reload Squid when you make a change then you'll need to set up you /etc/sudoers file sorta like my example sudoers file at the above URL
If we're lucky maybe some adventurous young person might want to expand it into a more featured Squid Console. This is just a quick 0.0.1 release that may go no further. :)


