Add PHPCompatibility to phpcs check

Author: gapple

composer.json

@@ -34,6 +34,7 @@
     "require-dev": {
         "httpwg/structured-field-tests": "*@dev",
         "paragonie/constant_time_encoding": "^3.0.0",
+        "phpcompatibility/php-compatibility": "^10@dev",
         "phpmd/phpmd": "^2.15",
         "phpstan/phpstan": "^2.1",
         "phpstan/phpstan-phpunit": "^2.0",

phpcs.xml.dist

@@ -29,4 +29,7 @@
     <rule ref="SlevomatCodingStandard.TypeHints.ParameterTypeHint"/>
     <rule ref="SlevomatCodingStandard.TypeHints.PropertyTypeHint"/>
     <rule ref="SlevomatCodingStandard.TypeHints.ReturnTypeHint"/>
+
+    <config name="testVersion" value="8.1-"/>
+    <rule ref="PHPCompatibility"/>
 </ruleset>

phpmd.ruleset.xml

@@ -2,15 +2,14 @@
 <ruleset name="PHPMD Ruleset"
          xmlns="http://pmd.sf.net/ruleset/1.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://pmd.sf.net/ruleset/1.0.0
-                     http://pmd.sf.net/ruleset_xml_schema.xsd"
-         xsi:noNamespaceSchemaLocation="
-                     http://pmd.sf.net/ruleset_xml_schema.xsd">
+         xsi:schemaLocation="http://pmd.sf.net/ruleset/1.0.0 http://pmd.sf.net/ruleset_xml_schema.xsd"
+         xsi:noNamespaceSchemaLocation="http://pmd.sf.net/ruleset_xml_schema.xsd">
     <description>PHPMD Ruleset</description>
 
     <rule ref="rulesets/codesize.xml">
         <exclude name="CyclomaticComplexity" />
         <exclude name="ExcessiveClassComplexity" />
+        <exclude name="TooManyPublicMethods" />
     </rule>
     <rule ref="rulesets/unusedcode.xml"/>
 </ruleset>