strict.xml

<?xml version="1.0"?>
<ruleset name="Strict 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">

    <description>The recommended rules for any project.</description>

    <rule ref="rulesets/codesize.xml" />
    <rule ref="rulesets/controversial.xml" />

    <rule ref="rulesets/design.xml">
        <exclude name="DevelopmentCodeFragment" />
    </rule>

    <rule ref="rulesets/design.xml/DevelopmentCodeFragment">
        <properties>
            <property name="unwanted-functions" value="var_dump,print_r,debug_zval_dump,debug_print_backtrace,dump" />
        </properties>
    </rule>

    <rule ref="rulesets/naming.xml">
        <exclude name="ShortVariable" />
    </rule>

    <rule ref="rulesets/naming.xml/ShortVariable">
        <properties>
            <property name="exceptions" value="em,id,qb,x,y" />
        </properties>
    </rule>

    <rule ref="rulesets/unusedcode.xml" />

    <exclude-pattern>vendor/</exclude-pattern>
    <exclude-pattern>node_modules/</exclude-pattern>
    <exclude-pattern>.*/cache/</exclude-pattern>

</ruleset>