Custom PHPMD rule

gistfile1.aw

<?php

class My_Custom_Symfony2Rule extends PHP_PMD_Rule implements PHP_PMD_Rule_IClassAware
{
    public function apply($class)
    {
        // Skip here
        if (false === $this->isController($class)) {
            return;
        }
        // Do some controller specific analysis
    }

    protected function isController($class)
    {
        foreach ($class->getInterfaces() as $interface)
        {
            if ($interface->getName() === 'ControllerInterface) {
                return true;
            }
        }    
        return false;
    }
}