复制代码 代码如下:
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");
