This is a code style based on PSR-2, as per Laravel's Contribution Guide
Configuration folder : Drop the Laravel.xml file in the /config/codestyles/ subfolder within your configuration directory.
IDE Settings : Open your Settings (Ctrl + Alt + S) and go to Editor > Code Style section. Click on the Scheme wrench on the right and select Import Scheme > Intellij IDEA code style XML.
This code style has been updated in line with Laravel 5.4, and matches Laravel's code styles as best as possible with PhpStorm's available configuration.
Be mindful of the PHPDoc layout, which dictates @param is followed by two spaces, the argument type, two more spaces, and finally the variable name, which I've not been able to replicate in PhpStorm.