Configured PHPMD.

build.xml

@@ -45,10 +45,16 @@
     <phingcall target="phpunit"/>
     <phingcall target="phpdoc"/>
     <phingcall target="phpcpd"/>
+    <phingcall target="phpmd"/>
     <phingcall target="pdepend"/>
     <phingcall target="phploc"/>
   </target>
 
+  <!-- Report rule violations with PHPMD (mess detector) -->
+  <target name="phpmd">
+    <exec command="phpmd ${srcdir}/module xml ${srcdir}/tests/phpmd.xml --exclude ${srcdir}/module/VuFind/tests --reportfile ${builddir}/reports/phpmd.xml" />
+  </target>
+
   <!-- Measure project with phploc -->
   <target name="phploc">
     <exec command="phploc --log-csv ${builddir}/reports/phploc.csv ${srcdir}/module" />

tests/phpmd.xml

+<?xml version="1.0"?>
+<ruleset name="PHPMD rules for VuFind" 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>PHPMD rules for VuFind</description>
+  <rule ref="rulesets/codesize.xml" />
+  <!-- <rule ref="rulesets/controversial.xml" /> -->
+  <rule ref="rulesets/design.xml">
+    <exclude name="EvalExpression" />
+  </rule>
+  <rule ref="rulesets/naming.xml">
+    <exclude name="ShortVariable" />
+    <exclude name="ShortMethodName" />
+  </rule>
+  <rule ref="rulesets/unusedcode.xml" />
+</ruleset>