以实例为说明：

controller

     add(new Text("name", array(			"maxlength" => 20,			"placeholder"=>'you name'		)));               //例子二：		$form->add(new Text("telphone"));                //例子三：               //例子三我有不明白的地方，该怎么调用他的验证。		$passwd = new Text("passwd");		$passwd->addValidator(new PresenceOf(array(			'message' => 'The passwd is required'		)));		$passwd->addValidator(new StringLength(array(			'min' => 10,			'messageMinimum' => 'The passwd is too short'		)));		$form->add($passwd);						$this->view->pick("form/form");		$this->view->form=$form;	}	}?>

　　

phtml

     tag->form("form/test");?>
     render("name") ?>
     render("telphone", array("maxlength"=>20, "placeholder"=>"you telphone"));?>
     render("passwd") ?>
     tag->submitButton("login");?>