Setting Up PHP & SQLite with a "Command Script"?

I'm trying to setup PHP & SQLite on my mac with by following this page: http://developer.apple.com/mac/articles/internet/phpeasyway.html. The code posted on the site is supposed to be run in a command script but I don't know how to make that happen. I've tried making a bash开发者_如何学编程 script and an applescript but both of those give errors. Any ideas?

Thanks!

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The documentation has this line of code:

user_db=${user_www}/${filename}-db.sqlite3

Is the filename variable defined? Does the database exist in that location?