PHP反射API实现插件机制

<?php
interface Iplugin{
        public static function getName();
}

class ContactPlugin implements Iplugin{
        public static function getName(){
                return __class__;
        }
        public static function getMenu(){
                return array(
                        array('Contact','/contact/index.php/')
                        );
        }
}
class HelpPlugin implements Iplugin{
        public static function getName(){
                return __class__;
        }
        public    function getMenu(){
                return array(
                        array('Help','/help/index.php/')
                        );
        }
}

function findPlugins(){
        $plugins = array();
        $all_classes = get_declared_classes();
        foreach($all_classes as $class){
                $reflection_class = new ReflectionClass($class);
                if($reflection_class->isUserDefined()&&$reflection_class->implementsInterface('Iplugin'))
                        $plugins[] = $reflection_class;
    
        }
        return $plugins;
}
function findMenus(){
        $plugins = findPlugins();
        $menus = array();
        foreach($plugins as $eachPlugin){
                if($eachPlugin->hasMethod('getMenu')){
                        $reflect_methond = $eachPlugin->getMethod('getMenu');
                        if($reflect_methond->isStatic()){
                                $method = $reflect_methond->invoke(null);
                        }else{
                                $plugin_instance = $eachPlugin->newInstance();
                                $method = $reflect_methond->invoke($plugin_instance);
                        }
                        $menus[] = $method;
                }
        }
        return $menus;
}
$all_plugins = findPlugins();
print_r($all_plugins);
$all_menus = findMenus();
print_r($all_menus);