Install the package with composer:
composer require myonlinestore/coding-standard --dev
Add the ruleset to your phpcs.xml.dist
file:
<?xml version="1.0"?>
<ruleset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="vendor/squizlabs/php_codesniffer/phpcs.xsd"
>
<arg name="basepath" value="."/>
<arg name="extensions" value="php"/>
<arg name="parallel" value="80"/>
<arg name="cache" value=".phpcs-cache"/>
<arg name="colors"/>
<arg value="nps"/>
<file>src</file>
<file>tests</file>
<rule ref="MyOnlineStore"/>
</ruleset>
If your code has entities with fields without accessors, you could disable the unused elements inspection:
<rule ref="MyOnlineStore">
<exclude name="SlevomatCodingStandard.Classes.UnusedPrivateElements"/>
</rule>