I rewrote portions of the code, two major changes and a host of small improvements.
For one thing you no longer need to hack the code in order to get the program to function (look at –help)
Second the program no longer caches the HTML file, it caches a parsed PHP array. This speeds up the program […]

I wrote a program to calculate the distance between two international cities, here take a look.
In order to get a list of avaliable cities comment out the line
print_r(distance($decimal[54],$decimal[170]));
and put
print_r($decimal);
this will list the avaliable cities in a format like
[326] => Array
(
[…]