Polr is written in PHP with the Lumen (Laravel-based) framework. As of 2016, we won't be officially supporting 1.x outside of fixing critical security bugs. The 1.x legacy branch uses MySQLi and requires the MySQL native driver -- whereas 2.x requires the PDO driver and uses the Eloquent ORM.
You can run tests for Polr using `phpunit`, and we encourage all contributors submitting a pull request to run them beforehand.
Polr is licensed under the __GPLv2+__ license: either version 2 of the GPL, or at your option, any later version.
By contributing to Polr, you agree to have your work licensed under GPLv2+.
Please be considerate towards others and respect all who participate in the community.