How do I grab an INI value within a shell script?

I have a parameters.ini file, such as:

[parameters.ini]    database_user    = user    database_version = 20110611142248

I want to read in and use the database version specified in the parameters.ini file from within a bash shell script so I can process it.

#!/bin/sh    # Need to get database version from parameters.ini file to use in script    php app/console doctrine:migrations:migrate $DATABASE_VERSION

How would I do this?