PHP中类代理机制的简单实现

class.proxy.demo.php

<?php

/**
 * 代理管理
 */
class ProxyManager
{
  /**
	 * 创建类代理
	 * @param type $className
	 * @param type $instanceName
	 */
	public static function create($className, $instanceName = null)
	{
		is_null($instanceName) && $instanceName = $className;
		static $objectPools = array();
		if (isset($objectPools[$instanceName]))
		{
			
		}
		else
		{
			$objectPools[$instanceName] = new ProxyFramework(new $className());
		}
		return $objectPools[$instanceName];
	}
}

/**
 * 代理框架
 */
class ProxyFramework
{
	private $object = null;
	/**
	 * 类代理实例
	 * @param type $object
	 */
	public function __construct($object)
	{
		$this->object = $object;
	}
	/**
	 * 获取类变量
	 * @param type $name
	 */
	public function __get($name)
	{
		echo '>> Get [' . $name . ']' . "\n";
		return $this->object->$name;
	}
	/**
	 * 设置类变量
	 * @param type $name
	 * @param type $value
	 */
	public function __set($name, $value)
	{
		echo '>> Set [' . $name . ']' . "\n";
		return $this->object->$name = $value;
	}
	/**
	 * 调用类方法
	 * @param type $name
	 * @param type $arguments
	 */
	public function __call($name, $arguments)
	{
		echo '>> Call [' . $name . ']' . "\n";
		return call_user_func_array(array($this->object, $name), $arguments);
	}
}

/**
 * 测试类
 */
class aClass
{
	public function hello()
	{
		echo 'hello';
	}
}

// test

echo '<pre>';

$object = ProxyManager::create('aClass');

$object->string = 'String';

echo $object->string;

echo "\n";

$object->hello();

echo '</pre>';

?>