PHP Entity

<?php
class Entity
{
	var $_email = '@163.com';
	var $_comment = 'no thing';

	public function getEmail()
	{
		return $this->_email;
	}

	public function setEmail($val)
	{
		$this->_email = $val;
		return $this;
	}

	public function getComment()
	{
		return $this->_comment;
	}

	public function setComment($val)
	{
		$this->_comment = $val;
		return $this;
	}
}
class Test
{

	public function save(Entity $guestbook)
	{
		$data = array(
				'email' => $guestbook->getEmail(),
				'comment' => $guestbook->getComment(),
				'created' => date('Y-m-d H:i:s'));
		$this->data = $data;
		return $this;
	}

	public function show()
	{
		print_r($this->data);
	}
}
$param = new Entity();
$param->setEmail('xxx@163.com')->setComment("说撒");
$t = new Test();
$t->save($param)->show();