网站注册

<form action="register.php" method="post">
  <label for="username">用户名：</label>
  <input type="text" id="username" name="username"><br>
  <label for="password">密码：</label>
  <input type="password" id="password" name="password"><br>
  <label for="email">邮箱：</label>
  <input type="email" id="email" name="email"><br>
  <input type="submit" value="注册">
</form>