CI框架，表述提交没有反应，这是为什么呢

<br /><form class="login active" action="http://localhost/~chrisfu/CI/index.php/login/checklogin" method="post"><br />						<h3>Login</h3><br />						<div><br />							<label>Username:</label><br />							<input type="text" name="name"/><br />							<span class="error">This is an error</span><br />						</div><br />						<div><br />							<label>Password: <a href="forgot_password.php" rel="forgot_password" class="forgot linkform">Forgot your password?</a></label><br />							<input type="password" name="psword"/><br />							<span class="error">This is an error</span><br />						</div><br />						<div class="bottom" ><br />							<div class="remember"><input type="checkbox" /><span>Keep me logged in</span></div><br />							<input type="submit" value="Login" name="submit"></input><br />							<a href="register.php" rel="register" class="linkform">You don't have an account yet? Register here</a><br />							<div class="clear"></div><br />						</div><br />					</form><br />

<br /><?php<br />class Login extends CI_Controller{<br />	function index(){<br />		$this->load->view('index');<br />	}<br />	function checklogin(){<br />		$this->load->model('test_m');<br />		$user=$this->test_m->user_select($_POST['name']);<br />		<br />		if($user){<br />			if($user[0]->upass==$_POST['pword']){<br />				echo "password right";<br />				$this->load->library('session');<br />				$arr=array('uid'=>$user[0]->uid);<br />				$this->session->set_userdata($arr);<br />				echo "<br>";<br />				echo $this->session->userdata('uid');<br />			}else{<br />					echo "password wrong";<br />			}<br />		}else{<br />			echo "user not exist";<br />		}<br />	}<br />}<br />	<br />?><br />