Your mission is to make a counter. The counter has three modes.  
In modes 1,2, and 3 it updates the database.

In mode 1 it outputs a 1x1 gif.
In mode 2 it outputs a gif that has a count of all requests so far.
In mode 3 it outputs the number of unique IPs that have visisted.
In mode 4 it outputs an entire HTML text page describing every requesting
host and the number of requests from that host.

All data is stored in a database.
Anyone should be able to include it their web page by saying <img src=counter.php?mode=1>.

Points ...


1 - Turned in by Tuesday Nov 7.
1 - Turned in by Thurday Nov 9.
1 - Mode 1 works.
1 - Mode 2 works.
1 - Mode 3 works.
1 - Mode 4 works.
1 - Uses the referer so that more than one client can use the counter.
1 - Draws pie charts of the hosts' requests.


Total:  7 points