phpcs.xml

<?xml version="1.0"?>
<ruleset name="matomo" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="vendor/squizlabs/php_codesniffer/phpcs.xsd">

    <description>Matomo Coding Standard</description>

    <arg name="extensions" value="php" />

    <file>core</file>
    <file>plugins</file>
    <file>tests/PHPUnit</file>

    <exclude-pattern>tests/PHPUnit/proxy/*</exclude-pattern>
    <exclude-pattern>tests/PHPUnit/Unit/Config/test_files/*</exclude-pattern>
    <exclude-pattern>tests/javascript/*</exclude-pattern>
    <exclude-pattern>*/vendor/*</exclude-pattern>
    <exclude-pattern>*/libs/*</exclude-pattern>

    <!-- exclude all plugins included as submodule as long as they might not fully follow this CS -->
    <exclude-pattern>plugins/(AnonymousPiwikUsageMeasurement|Bandwidth|CustomAlerts|CustomVariables|DeviceDetectorCache|LogViewer|LoginLdap|MarketingCampaignsReporting|Provider|QueuedTracking|SecurityInfo|TagManager|TasksTimetable|TrackingSpamPrevention|TreemapVisualization|VisitorGenerator)/*</exclude-pattern>

    <config name="installed_paths" value="../../slevomat/coding-standard"/>

    <!-- Use PSR 12 standard as default -->
    <!-- Some rules are currently excluded/restricted, but those restrictions should be removed in the future -->

    <rule ref="PSR12">
        <!-- can't use this as long as we have functions.php files that need to be required manually -->
        <exclude name="PSR1.Files.SideEffects.FoundWithSymbols" />
    </rule>

    <rule ref="Generic.Files.LineLength">
        <properties>
            <property name="lineLimit" value="400"/>
        </properties>
        <exclude-pattern>tests/PHPUnit/*</exclude-pattern>
        <exclude-pattern>plugins/*/tests/*</exclude-pattern>
    </rule>

    <rule ref="Squiz.Classes.ValidClassName.NotCamelCaps">
        <!-- Classnames for our update files don't match PascalCase, this can't be changed easily -->
        <exclude-pattern>core/Updates/*</exclude-pattern>
        <exclude-pattern>plugins/*/Updates/*</exclude-pattern>
    </rule>

    <rule ref="PSR1.Classes.ClassDeclaration.MultipleClasses">
        <!-- Allow using multiple classes in one file for tests -->
        <exclude-pattern>tests/PHPUnit/*</exclude-pattern>
        <exclude-pattern>plugins/*/tests/*</exclude-pattern>
    </rule>


    <!-- Additional rules that are not covered by PSR above -->

    <!-- Forbid unused use statements -->
    <rule ref="SlevomatCodingStandard.Namespaces.UnusedUses">
        <properties>
            <property name="searchAnnotations" value="true"/>
            <property name="ignoredAnnotations" type="array">
                <element value="@group"/>
                <element value="@api"/>
            </property>
        </properties>
    </rule>

    <!-- Forbid some functions that should not be used (directly) -->
    <rule ref="Generic.PHP.ForbiddenFunctions">
        <properties>
            <property name="forbiddenFunctions" type="array">
                <element key="eval" value="null"/>
                <element key="create_function" value="null"/>
                <element key="unserialize" value="\Piwik\Common::safe_unserialize"/>
            </property>
        </properties>
        <!-- still allow those functions in tests -->
        <exclude-pattern>*/tests/*</exclude-pattern>
    </rule>
</ruleset>