Searching sites for strings?

[Anon]

I run an information site for a game, and would like to pull some stuff from the main game webpage (Legally of course).

I have tried a few different things, but they all have come to doom when trying to have the script goto a certain string on a page, get a number, then print the number alone.

For example. The site is www.joe.com/game/info.php

The string to search for is "225 players are currently online.".

What would be the best line of commands to have it simply print "225" on a page?

Thanks.

[factory21]

Rough outline:

fopen("http://www.site.com/whatever.php","r");
//read file data into $file_data

eregi("<pattern>",$file_data,$matches);
print $matches[0];