How do I use Ajax to get the selected option and save it into my database ?

How do I use Ajax to get the selected option and save it into my database ?

While working on Ubuntu, I have a PDF file that I want to to convert into text, then I preg_match in order to extract the data I need.

After this, I put my data lines into a drop-down list.

How would you consider doing this ?

- Reena Shetty (Private Consultant at FCC Pvt. Ltd.)