Problem
You'd like to use SQLite, but PHP isn't configured for it.
Solution
Install the PHP Driver for SQLite.
$ sudo apt-get install -y php5-sqlite
Then restart apache.
$ sudo service apache2 restart
Discussion
SQLite requires no server.
It is a self-contained SQL database engine. Most often SQLite is used for testing, but it can be useful for small applications.
See also Setting up the SQLite Database Driver.
