loadModules() for modular habari plugins

main.php

<?php
class MyPlugin extends Plugin
{
   private $modules = array();

   private function loadModules()
    {
        $base_path = dirname(__FILE__) . '/modules/';
        
        $dh  = opendir( $base_path );
        while ( false !== ($file = readdir($dh)) )
        {
            if ( !strstr($file, '.php') )
            {
                continue;
            }

            $module_name = str_replace('.php', '',  $file);
                        $class_name = get_class($this) .'_'. ucfirst( $module_name );
            include_once( $base_path . $file );
            if ( class_exists( $class_name, false ) )
            {
                $this->modules[$module_name] = new $class_name();
            }
        }
    }
}