php反射类ReflectionClass用法实例详解

/**

 * @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