php表单无法获取值,该如何解决

<br />
<form name="form2" method="post" action="login.php"><br />
<p><span class="top-head">密 码 ：</span><br />
    <label for="password"></label><br />
  <input name="password" type="text" id="password" value="请输入密码"><br />
  </p><br />
  <p> </p><br />
  <p> </p><br />
<p><span class="top-head">密 码 ：</span><br />
                      <label for="password2"></label><br />
                      <input name="password2" type="text" id="password2" value="请再次密码"><br />
                    </p><br />
<p> </p><br />
<p> </p><br />
  <p><span class="top-head">邮 箱 ：</span><br />
                    <label for="password3"></label><br />
                    <input name="password3" type="text" id="password3" value="请输入您的邮箱"><br />
                    </p><br />
<p> </p><br />
<p> </p><br />
<p><span class="top-head">授权码：</span><br />
                      <label for="password4"></label><br />
     &nbsp【本文来自鸿网互联 (http://www.68idc.cn)】;                <input name="password4" type="text" id="password4" value="请输入授权码"><br />
                    </p><br />
<p> </p><br />
<p> </p><br />
  <hr><br />
<p><br />
  <script type="text/javascript" src="js/fliplightbox.min.js"></script><br />
      <script type="text/javascript">$('body').flipLightBox()</script><br />
</p><br />
<p> </p><br />
<br />
<input type="submit" name="ann03" id="ann03" value="提 交"><br />
                    <br />
  </form><br />
                   <?php <br />
  	 	if(isset($_POST['ann03']))<br />
   { <br />
      <br />
   $username = $_POST['password'];<br />
   echo "您输入的用户名是：".$username;<br />
  <br />
   }<br />
?><br />