PHP编程：php利用反射实现插件机制的方法

<?php
/**
?* @name??? PHP反射API--利用反射技术实现的插件系统架构
?*/??
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;??
}??
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' ));??
??? }??
}
$menu = computeMenu();??
$articles??? = computeArticles();??
print_r($menu);??
print_r($articles);