How to run a codeception test by a php script?

I was looking arround in the codeception docs as well as i google my topic, but i did not found a solution for this.

I do not want to run a codeception test by cli:

php <pathToCodeCeption>/codecept run

I want to run it inside a php-script:

<?php

$codeCeptionRunner = /* What to do here*/;
$codeCeptionRunner->run();

Does anyone has an idea how to accomplish this Taks?