/**
 * @name PHP反射API--利用反射技术实现的插件系统架构
 * @author :PHPCQ.COM
 */
interface Iplugin
{
 public static
 function getName();
}
function findPlugins()
{
 $plugins = array();
 foreach(get_declared_classes() as $class)
 {
  $reflectionClass = new ReflectionClass($class);
  if ($reflectionClass - > implementsInterface('Iplugin'))
  {
   $plugins[] = $reflectionClass;
  }
 }
 return $plugins;
}
function computeMenu()
{
 $menu = array();
 foreach(findPlugins() as $plugin)
 {
  if ($plugin - > hasMethod('getMenuItems'))
  {
   $reflectionMethod = $plugin - > getMethod('getMenuItems');
   if ($reflectionMethod - > isStatic())
   {
    $items = $reflectionMethod - > invoke(null);
   }
   else
   {
    $pluginInstance = $plugin - > newInstance();
    $items = $reflectionMethod - > invoke($pluginInstance);
   }
   $menu = array_merge($menu, $items);
  }
 }
 return $menu;
}
function computeArticles()
{
 $articles = array();
 foreach(findPlugins() as $plugin)
 {
  if ($plugin - > hasMethod('getArticles'))
  {
   $reflectionMethod = $plugin - > getMethod('getArticles');
   if ($reflectionMethod - > isStatic())
   {
    $items = $reflectionMethod - > invoke(null);
   }
   else
   {
    $pluginInstance = $plugin - > newInstance();
    $items = $reflectionMethod - > invoke($pluginInstance);
   }
   $articles = array_merge($articles, $items);
  }
 }
 return $articles;
}
require_once('plugin.php');
$menu = computeMenu();
$articles = computeArticles();
print_r($menu);
print_r($articles);

<?php
class MycoolPugin implements Iplugin
{
 public static
 function getName()
 {
  return 'MycoolPlugin';
 }
 public static
 function getMenuItems()
 {
  return array(array('description' => 'MycoolPlugin', 'link' => '/MyCoolPlugin'));
 }
 public static
 function getArticles()
 {
  return array(array('path' => '/MycoolPlugin', 'title' => 'This is a really cool article', 'text' => xxxxxxxxx));
 }
}

class fuc { //定义一个类
 static
 function ec() {
  echo '我是一个类';
 }
}
$class=new ReflectionClass('fuc'); //建立 fuc这个类的反射类

$fuc=$class->newInstance(); //相当于实例化 fuc 类
$fuc->ec(); //执行 fuc 里的方法ec
/*最后输出:我是一个类*/

$ec=$class->getmethod('ec'); //获取fuc 类中的ec方法
$fuc=$class->newInstance(); //实例化
$ec->invoke($fuc);   //执行ec 方法