kohana框架类扩展透明性

直接在需要的地方进行继承扩展即可，类中加入自己想要的方法

class Cookie extends Kohana_Cookie {}

有些都是抽象类，这时就要注意对抽象方法的实现

如

<?php defined('SYSPATH') or die('No direct script access.');
/**
 *  session类扩展，增加flashdata方法
 *
 * @package    modules/admin
 * @category   Controllers
 * @author     lmeng
 */
class Session extends Kohana_Session {
public function flashdata($message)
{

echo '你输入的信息是：'.$message;
exit;
}

/**
 * Loads the raw session data string and returns it.
 *
 * @param   string   session id
 * @return  string
 */
protected function _read($id = NULL)
{

}

/**
 * Generate a new session id and return it.
 *
 * @return  string
 */
protected function _regenerate()
{

}

/**
 * Writes the current session.
 *
 * @return  boolean
 */
protected function _write()
{

}

/**
 * Destroys the current session.
 *
 * @return  boolean
 */
protected function _destroy()
{

}

/**
 * Restarts the current session.
 *
 * @return  boolean
 */
protected function _restart()
{

}




}
?>