I/O with Executables

[discovery2006]

Hi!

I'm extremely new at this, so I have a pretty primitive question...
Let's say I've written an executable program that writes "Hello World" into a text file. How would I code php to run the executable to write "Hello World" in the file, if the php file, the executable, and the text file are all kept in the appropriate directory on a php-enabled server?

Thanks!

[drew010]

check out php's program [man]exec[/man]ution functions for info on how to do that