Installation

Psalm Requires PHP >= 5.6 and Composer.

composer require --dev vimeo/psalm

Add a psalm.xml config:

./vendor/bin/psalm --init [source_directory=src] [config_level=3]

where config_level represents how strict you want Psalm to be. 1 is the strictest, 6 is the most lenient.

Then run Psalm:

./vendor/bin/psalm