File Update Watcher in PHP

[MeteoWatch]

I am trying to build my PHP script to pull a file from one folder, and insert into a database.

I have the database connection code built and working, but I am trying to make it so my script runs everytime file "A" is updated.

Does anyone have a link to a good learning tool on how to do this, or know how to go about building this functionality.

Thanks in advance.

[Modifier]

Page Update Watcher is a program that helps you monitor your favourite web pages for updates. A webserver has to be set up to parse certain files in specific ways. HTML files are usually served right up from file but using dynamic coding like PHP, ASP or ColdFusion files will have to go through a program to translate the server code into a readable HTML output.