I have a .txt file that's about 2 megs. It's a list of names, addresses and zip codes -- 50,000 or so.
I need a script that pulls the zip codes -- all 5 digit numbers -- and creates a new .txt file that is just those numbers, separated by commas.
That's it! And I need as fast as possible.
It seems like a few lines of code -- I found an article ...
Skills: css, mysql administration, php