PHP设计桥接模式

<?php

/**
*@Description:桥接模式
*@Author:luoxiaojin
*@Date:2020-06-3010:06:41
*@LastEditors:luoxiaojin
*@LastEditTime:2020-06-3011:00:04
*@FilePath:design_patternsl10.php
*/
//论坛发送站内信
abstractclassMsg{
//发送方式
protected$send=null;

//发送内容
protected$text=”;
publicfunctioncontent(){
//
}
publicfunctionsend(){
//
}
}
//发送方式
classEmailMsgextendsMsg{
publicfunction__construct($to,$text){
$this->text=$to.$text;
}
publicfunctioncontent(){
return’Email:’.$this->text;
}
}
classSmsMsgextendsMsg{
publicfunction__construct($to,$text){
$this->text=$to.$text;
}
publicfunctioncontent(){
return’短信:’.$this->text;
}
}
//紧急程度
classCommonSendextendsMsg{
publicfunction__construct(Msg$obj){
$this->text=$obj->content();
}
publicfunctionsend(){
return”{$this->text},普通信息！”;
}
}
classUrgentSendextendsMsg{
publicfunction__construct(Msg$obj){
$this->text=$obj->content();
}
publicfunctionsend(){
return”{$this->text},紧急通知！”;
}
}
//耦合调用
$commonEmailMsg=newCommonSend(newEmailMsg(‘小明’,’吃饭了！’));
echo$commonEmailMsg->send();
$urgentSmsMsg=newUrgentSend(newSmsMsg(‘小红’,’家里失火了!’));
echo$urgentSmsMsg->send();