So I have a KML file which has attribute data(Inside the tag with about 12 data points). This file was generated on ArcGIS. I'm trying to write a PHP script to parse this KML file and insert the datapoints within the ExtendedData tag into a db. How do i do this?
This is a high-level answer as you've not given any specifics.
Reading KML is basically the same as XML (KML being a subset thereof).
Some possible resources:
Then you just take the variable that you've read your data to and output it to the database.