php利用反射实现插件机制的方法

本文实例讲述了php利用反射实现插件机制的方法。分享给大家供大家参考。具体实现方法如下：

<?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);

希望本文所述对大家的php程序设计有所帮助。