A stricter codesize ruleset than PHPMD ships with by default.

ruleset.xml

<?xml version="1.0"?>
<ruleset name="Codesize Mess Detection Rules"
         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">
    <description>
        Runs PHPMD codesize rules more strictly than default.
    </description>

    <rule ref="rulesets/codesize.xml/CyclomaticComplexity">
        <properties>
            <property name="reportLevel" value="6" />
        </properties>
    </rule>
    <rule ref="rulesets/codesize.xml/NPathComplexity">
        <properties>
            <property name="minimum" value="50" />
        </properties>
    </rule>
    <rule ref="rulesets/codesize.xml/ExcessiveMethodLength">
        <properties>
            <property name="minimum" value="30" />
        </properties>
    </rule>
    <rule ref="rulesets/codesize.xml/ExcessiveClassLength">
        <properties>
            <property name="minimum" value="400" />
        </properties>
    </rule>
    <rule ref="rulesets/codesize.xml/ExcessiveParameterList">
        <properties>
            <property name="minimum" value="5" />
        </properties>
    </rule>
    <rule ref="rulesets/codesize.xml/ExcessivePublicCount">
        <properties>
            <property name="minimum" value="20" />
        </properties>
    </rule>
    <rule ref="rulesets/codesize.xml/TooManyFields">
        <properties>
            <property name="maxfields" value="10" />
        </properties>
    </rule>
    <rule ref="rulesets/codesize.xml/TooManyMethods">
        <properties>
            <property name="maxmethods" value="15" />
        </properties>
    </rule>
    <rule ref="rulesets/codesize.xml/TooManyPublicMethods">
        <properties>
            <property name="maxmethods" value="7" />
        </properties>
    </rule>
    <rule ref="rulesets/codesize.xml/ExcessiveClassComplexity">
        <properties>
            <property name="maximum" value="35" />
        </properties>
    </rule>
</ruleset>