phpcs.xml

<?xml version="1.0"?>
<ruleset name="Site Kit by Google Project Rules">

	<rule ref="WordPress-Docs">
		<exclude-pattern>tests/*</exclude-pattern>
	</rule>

	<rule ref="WordPress-Extra">
		<!-- Ignore WordPress core file naming conventions since Site Kit uses PSR-4 -->
		<exclude name="WordPress.Files.FileName"/>
		<!-- Site Kit doesn't use base64 encoding functions to "obfuscate code" -->
		<exclude name="WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_encode"/>
		<exclude name="WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_decode"/>
		<!-- Allow short ternary -->
		<exclude name="WordPress.PHP.DisallowShortTernary" />
		<!-- Prevent this from showing up as a warning on every run. See WordPress/WordPress-Coding-Standards#1425 -->
		<exclude name="WordPress.WP.TimezoneChange.DeprecatedSniff"/>
	</rule>

	<!-- Use correct textdomain -->
	<rule ref="WordPress.WP.I18n">
		<properties>
			<property name="text_domain" type="array">
				<element value="google-site-kit"/>
				<!-- Use default text domain when relying on WP core strings. -->
				<element value="default"/>
			</property>
		</properties>
	</rule>

	<!-- Include only WordPress-VIP-Go rules but not the ruleset since it makes WPCS less strict -->
	<rule ref="WordPressVIPMinimum.Functions">
		<!-- Allow user meta since for Site Kit there is no alternative -->
		<exclude name="WordPressVIPMinimum.Functions.RestrictedFunctions.user_meta_add_user_meta"/>
		<exclude name="WordPressVIPMinimum.Functions.RestrictedFunctions.user_meta_delete_user_meta"/>
		<exclude name="WordPressVIPMinimum.Functions.RestrictedFunctions.user_meta_get_user_meta"/>
		<exclude name="WordPressVIPMinimum.Functions.RestrictedFunctions.user_meta_update_user_meta"/>
	</rule>
	<rule ref="WordPressVIPMinimum.Performance"/>
	<rule ref="WordPressVIPMinimum.Files">
		<exclude name="WordPressVIPMinimum.Files.IncludingFile.UsingCustomConstant"/>
		<exclude name="WordPressVIPMinimum.Files.IncludingFile.UsingVariable"/>
	</rule>
	<rule ref="WordPressVIPMinimum.UserExperience"/>
	<rule ref="WordPressVIPMinimum.Security"/>
	<rule ref="VariableAnalysis">
		<!-- This sniff is severely broken, flaggin e.g. $this as undefined variable -->
		<exclude name="VariableAnalysis.CodeAnalysis.VariableAnalysis.UndefinedVariable"/>
		<!-- This sniff flags unused exception variables which cannot be avoided -->
		<exclude name="VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable"/>
	</rule>

	<!-- Show details about violated sniffs -->
	<arg value="s"/>

	<!-- Iterate over all PHP files by default -->
	<arg name="extensions" value="php"/>
	<file>.</file>

	<!-- Test-specific exclusions -->
	<rule ref="WordPress.DB.DirectDatabaseQuery">
		<exclude-pattern>tests/*</exclude-pattern>
	</rule>
	<rule ref="WordPress.DB.SlowDBQuery">
		<exclude-pattern>tests/*</exclude-pattern>
	</rule>
	<rule ref="WordPress.NamingConventions">
		<exclude-pattern>tests/*</exclude-pattern>
	</rule>
	<rule ref="WordPress.Security.EscapeOutput">
		<exclude-pattern>tests/*</exclude-pattern>
	</rule>
	<rule ref="WordPress.Security.NonceVerification">
		<exclude-pattern>tests/*</exclude-pattern>
	</rule>
	<rule ref="WordPress.Security.ValidatedSanitizedInput">
		<exclude-pattern>tests/*</exclude-pattern>
	</rule>
	<rule ref="WordPress.WP.AlternativeFunctions">
		<exclude-pattern>tests/*</exclude-pattern>
	</rule>
	<rule ref="WordPress.WP.GlobalVariablesOverride">
		<exclude-pattern>tests/*</exclude-pattern>
	</rule>
	<rule ref="WordPressVIPMinimum.Functions.RestrictedFunctions">
		<exclude-pattern>tests/*</exclude-pattern>
	</rule>

	<!-- Third-party and generated code -->
	<exclude-pattern>includes/Core/Assets/Manifest.php</exclude-pattern>
	<exclude-pattern>node_modules/*</exclude-pattern>
	<exclude-pattern>third-party/*</exclude-pattern>
	<exclude-pattern>*/vendor/*</exclude-pattern>

	<!-- Check for cross-version support for PHP 5.6 and higher. -->
	<config name="testVersion" value="5.6-"/>
	<config name="minimum_supported_wp_version" value="4.7"/>
	<rule ref="PHPCompatibilityWP" />

</ruleset>