<form action="check.php" method="post"> 用户名:<input type="text" name="user"> 密码:<input type="password" name="pw"> <input type="submit" value="提交"> </form>
<form action="check.php" method="post"> 用户名:<input type="text" name="user"> 密码:<input type="password" name="pw"> <input type="submit" value="提交"> </form>