Laravel allow you to easily create database with database migration.

First you need to edit

Code:
app/config/database.php
and set the database.

To create database migration, see

http://laravel.com/docs/4.2/migrations

Once database migrations are created, you can run it, so database will be created in MySQL database.

To create MySQL database from existing Database migration file, run

Code:
php artisan migrate
This command will read migrations file stored in folder

Code:
app/database/migrations/
and create corresponding database tables.