- PHP CLI available in PATH
curl https://raw.githubusercontent.com/saucal/wp-codesniffer-installer/master/install-standards.sh | bash
If you don't have composer, install it with the setup exe file from their site. Then:
composer global require -W "dealerdirect/phpcodesniffer-composer-installer:0.7.0" "phpcompatibility/php-compatibility" "wp-coding-standards/wpcs" "automattic/vipwpcs" "woocommerce/woocommerce-sniffs"
phpcs --config-set default_standard WordPress-Extra
phpcs --config-set show_warnings 1