Installing Behat

The easiest way to install Behat is by using Composer:

$> composer require --dev behat/behat

After that you'll be able to run Behat via:

$> vendor/bin/behat

Installing Development Version

Clone the repository and install dependencies via Composer:

$> composer install

After that you will be able to run development version of Behat via:

$> bin/behat

Contributing

Before contributing to Behat, please take a look at the CONTRIBUTING.md document.

Versioning

Starting from v3.0.0, Behat is following Semantic Versioning v2.0.0. This basically means that if all you do is implement interfaces (like this one) and use service constants (like this one), you would not have any backwards compatibility issues with Behat up until v4.0.0 (or later major) is released. Exception could be an extremely rare case where BC break is introduced as a measure to fix a serious issue.

You can read detailed guidance on what BC means in Symfony BC guide.