If you are here, you have probably applied for a job at Obiz and have received the name of a challenge to take. Be welcome!
The challenges code is in the src folder. The instructions are written as function comments inside the class templates.
In case you are not familiar with github or composer and want to run the tests against your code, here are the necessary steps.
Clone the project to your computer
git clone https://github.com/Obiz/challenges.git obiz-challenges
Download and install composer
Install the project dependencies
composer.phar install --prefer-dist
Run the tests for a specific challenge
./vendor/bin/phpunit tests