factory reset php design mode Factory factory mode

复制代码 代码如下:

/**
* Factory Method Pattern
*
* Define an interface for creating objects, let subclasses decide which class to instantiate, and use one class to defer instantiation to its subclasses
*/
/*
class DBFactory
{
public static function create($type)
{
swtich($type)
{
case "Mysql":
return new MysqlDB(); break;
case "Postgre":
return new PostgreDB(); break;
case "Mssql":
return new MssqlDB(); break;
}
}
}
*/
class DBFactory
{
public static function create($type)
{
$class = $type."DB";
return new $class;
}
}
interface DB
{
public function connect();
public function exec();
}
class MysqlDB implements DB
{
public function __construct() {
echo "mysql db
";
}
public function connect() {
}
public function exec() {
}
}
class PostgreDB implements DB
{
public function __construct() {
echo "Postgre db
";
}
public function connect() {
}
public function exec() {
}
}
class MssqlDB implements DB
{
public function __construct() {
echo "mssql db
";
}
public function connect() {
}
public function exec() {
}
}
$oMysql = DBFactory::create("Mysql");
$oPostgre = DBFactory::create("Postgre");
$oMssql = DBFactory::create("Mssql");

以上就介绍了factory reset php设计模式 Factory工厂模式，包括了factory reset方面的内容，希望对PHP教程有兴趣的朋友有所帮助。