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<?php
namespace framework\database;
/**
* DB接口类
*/
interface DbInterface{
public function query($sql); //执行SQL
public function fetch($sql); //从结果集中取出一行
public function fetchAll($sql); //从结果集中取出全部数据
public function getInsertId(); //获取最后插入主键ID
public function getAffectedRows(); //获取受影响的记录数
public function getVersion(); //获取数据库版本
public function beginTrans(); //开启事务
public function commit(); //提交事务
public function rollback(); //回滚事务
public function escapeString($str); //数据安全处理
public function close(); //资源回收
public function __destruct(); //析构函数
}