PHP-CS-Fixer/dev-tools/php-compatibility/phpcs-php-compatibility.xml

<?xml version="1.0" encoding="UTF-8"?>

<ruleset
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="../vendor/squizlabs/php_codesniffer/phpcs.xsd"
>
    <arg name="basepath" value="../../"/>
    <arg name="cache" value="cache.json"/>
    <arg name="colors"/>
    <arg name="extensions" value="php"/>

    <arg value="n"/><!-- Only errors, without warnings -->
    <arg value="s"/><!-- Display sniffs' names -->

    <rule ref="PHPCompatibility">
        <!-- Attributes are interpreted as a comments on PHP <8.0, so they don't break the code (when they're single line) -->
        <exclude name="PHPCompatibility.Attributes.NewAttributes.Found"/>
        <!-- We use named arguments in few places when using Attributes, let's decide if we want to continue doing so -->
        <exclude name="PHPCompatibility.FunctionUse.NewNamedParameters.Found"/>
        <!-- We explicitly check in codebase if new constants are defined -->
        <exclude name="PHPCompatibility.Constants.NewConstants"/>
        <!-- We use Sf 8.1 polyfill (but no polyfill ruleset available yet)-->
        <exclude name="PHPCompatibility.FunctionUse.NewFunctions.array_is_listFound"/>
        <!-- we use it to test code using high PHP version -->
        <exclude name="PHPCompatibility.Numbers.RemovedHexadecimalNumericStrings.Found"/>
        <exclude-pattern>tests/Fixtures/**/*</exclude-pattern>
    </rule>
    <rule ref="PHPCompatibilitySymfonyPolyfillPHP80"/>

    <config name="testVersion" value="7.4-8.3"/>

    <file>../../src/</file>
    <file>../../tests/</file>
    <file>../../php-cs-fixer</file>
</ruleset>