php设计模式---抽象模式模式

代码结构图:

//抽象工厂定义:抽象工厂模式提供一个创建一系列相关或相互依赖对象的接口,而无需指定他们具体的类(官方定义看着真蛋疼 自行百度理解吧 ^_^)
//需求:不同的数据库sql写法不一样,实现从不同数据库获取用户和新增用户,获取部门和新增部门

//用户表 抽象产品a
class user{

}
//部门表 抽象产品b
class department{

}

//用于解耦 ?定义具体抽象产品的接口
interface Iuser{
 ???public function insert(user $user);
 ???public function getUser($id);
}

class mysqlUser implements Iuser{
 ???public function insert(user $user){
 ???????echo ‘在mysql中给user表增加一条记录<br/>‘;
 ???}
 ???public function getUser($id){
 ???????echo ‘在mysql中根据id得到user表的一条记录<br/>‘;
 ???}
}

class sqlserverUser implements Iuser{
 ???public function insert(user $user){
 ???????echo ‘在sqlserve中给user表增加一条记录<br/>‘;
 ???}
 ???public function getUser($id){
 ???????echo ‘在sqlserve中根据id得到user表的一条记录<br/>‘;
 ???}
}


//部门解耦 定义具体抽象产品的接口
interface IDepartment{
 ???public function insert(department $d);
 ???public function getDepartment($id);
}
class mysqlDepartment implements IDepartment{
 ???public function insert(department $d){
 ???????echo ‘在mysql中给department表增加一条记录<br/>‘;
 ???}
 ???public function getDepartment($id){
 ???????echo ‘在mysql中根据id得到department表的一条记录<br/>‘;
 ???}
}

class sqlserverDepartment implements IDepartment{
 ???public function insert(department $d){
 ???????echo ‘在sqlserver中给department表增加一条记录<br/>‘;
 ???}
 ???public function getDepartment($id){
 ???????echo ‘在sqlserver中根据id得到department表的一条记录<br/>‘;
 ???}
}

//工厂方法
interface factory{
 ???public function createUser();
 ???public function createDepartment();
}

//具体工厂类
class mysqlFactory implements factory{
 ???public function createUser(){
 ???????return new mysqlUser();
 ???}
 ???public function createDepartment(){
 ???????return new mysqlDepartment();
 ???}
}


//具体工厂类
class sqlserverFactory implements factory{
 ???public function createUser(){
 ???????return new sqlserverUser();
 ???}
 ???public function createDepartment(){
 ???????return new sqlserverDepartment();
 ???}
}

//客户端
class client{
 ???public function show(){
 ???????$user = new user(); //用户表
 ???????$dept = new department(); //部门表
 
 ???????$factory = new mysqlFactory(); //mysql具体工厂类 以后切换仅仅修改此处的工厂类就好 多么简单
 ???????$u = $factory->createUser();
 ???????$u->insert($user);
 ???????$u->getUser(1);

 ???????$d = $factory->createDepartment();
 ???????$d->insert($dept);
 ???????$d->getDepartment(1);
 ???}
}

$n = new client();
$n->show();

所有原创博客均已经过本人验证,本人才疏学浅,刚开始写博客 希望大家多多支持 有问题的地方请指出 我及时改正