<?php
/**
* 桥接模式
*
* 将抽象部份与它实现部分分离,使用它们都可以有独立的变化
*/
abstract class Implementor
{
abstract public function operation();
}
class ConcreteImplementorA extends Implementor
{
public function operation()
{
echo "ConcreteImplementorA Operation<br/>";
}
}
class ConcreteImplementorB extends Implementor
{
public function operation()
{
echo "ConcreteImplementorB Operation<br/>";
}
}
class Abstraction
{
protected $_implementor = null;
public function setImplementor($implementor)
{
$this->_implementor = $implementor;
}
public function operation()
{
$this->_implementor->operation();
}
}
class RefinedAbstraction extends Abstraction
{
}
class ExampleAbstraction extends Abstraction
{
}
//
$objRAbstraction = new RefinedAbstraction();
$objRAbstraction->setImplementor(new ConcreteImplementorB());
$objRAbstraction->operation();
$objRAbstraction->setImplementor(new ConcreteImplementorA());
$objRAbstraction->operation();
$objEAbstraction = new ExampleAbstraction();
$objEAbstraction->setImplementor(new ConcreteImplementorB());
$objEAbstraction->operation();
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