Currently the only supported method of installation is through Composer. For a tutorial on setting up a PHP project with Composer please follow this link.
Using Composer to manage your dependencies, simply add the Snowplow PHP Tracker to your project by including it in your composer.json file as a dependency.
Assuming you have Composer setup correctly in the root of your project. Type the following command line argument:
composer install # If composer has not been run yet
composer update # If composer dependencies are already installed
This will install the Snowplow Tracker and allow you to initialize a Tracker object:
// Bare minimum Tracker initialization.
$emitter = new SyncEmitter("collector_uri");
$subject = new Subject();
$tracker = new Tracker($emitter, $subject);