phpcs.xml

<?xml version="1.0"?>
<ruleset name="GDPRStandard" namespace="Drupal\GDPR\CustomStandard">

    <!--
       The name attribute of the ruleset tag is displayed
       when running PHP_CodeSniffer with the -v command line
       argument.

       If you have custom sniffs, and they use a namespace prefix
       that is different to the name of the directory containing
       your ruleset.xml file, you can set the namespace prefix using
       the namespace attribute of the ruleset tag.

       For example, if your namespace format for sniffs is
       MyProject\CS\Standard\Sniffs\Category, set the namespace to
       MyProject\CS\Standard (everything up to \Sniffs\)
    -->

    <!--
       The content of the description tag is not displayed anywhere
       except in this file, so it can contain information for
       developers who may change this file in the future.
    -->
    <description>A custom coding standard for the drupal/gdpr module.</description>

    <!-- Check for cross-version support for PHP 5.6 and higher. -->
    <config name="testVersion" value="5.6-"/>

    <arg name="extensions" value="php,module,inc,install,test,profile,theme" />
    <arg name="ignore" value="*.md" />
    <arg value="p" />

    <!--
       Include all sniffs in the PEAR standard. Note that the
       path to the standard does not have to be specified as the
       PEAR standard exists inside the PHP_CodeSniffer install
       directory.
    -->
    <!-- From drupal/coder:^8 -->
    <rule ref="Drupal"/>
    <rule ref="DrupalPractice"/>
    <!-- From wimg/php-compatibility:^8 -->
    <rule ref="PHPCompatibility"/>

</ruleset>