用户注册系统时如何进行登录

debugcn 发表于 Dev

408

目前，在我的登录系统中，用户必须在注册后进行登录。

<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
    <p>Not a member yet?.Sign up here.By Sign up You are accepting our <a href="terms.php">terms and conditions</a> </p>
    <fieldset>
      <legend>Registration Info</legend>
      <label for="username">Username:</label>
      <input type="text" id="username" name="username" value="<?php if (!empty($username)) echo $username; ?>" /><br />
      <label for="email">Email id:</label>
      <input type="email" id="email" name="email" /><br />
      <label for="password1">Password:</label>
      <input type="password" id="password1" name="password1" /><br />
      <label for="password2">Password (retype):</label>
      <input type="password" id="password2" name="password2" /><br />
    </fieldset>
    <input type="submit" value="Sign Up" name="create" />
  </form>

如果表格提交正确

<?php
      if (!empty($user_username) && !empty($user_password)) {
 // Make sure someone isn't already registered using this username
  $query = "SELECT * FROM <database> WHERE username = '$username'";
  $data = mysqli_query($dbc, $query);
  if (mysqli_num_rows($data) == 0) {
    // The username is unique, so insert the data into the database
    $query = "INSERT INTO <database> (username,last_name,password,join_date) VALUES ('$username','$email',SHA('$password1'), NOW())";
    $result=mysqli_query($dbc, $query) or die("cant create an account");
    }else{
        die("Somthing went wrong");
    }
      }
?>

完成后，他必须进入登录页面并使用以下代码重新请求登录

    <form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
    <fieldset>
      <legend>Log In</legend>
      <label for="username">Username:</label>
      <input type="text" name="username" value="<?php if (!empty($user_username)) echo $user_username; ?>" /><br />
      <label for="password">Password:</label>
      <input type="password" name="password" />
    </fieldset>
    <input type="submit" value="Log In" name="submit" />
  </form>

我不希望这个系统在用户注册时就这样发生，因为用户本身必须将其带到主页。并且在注册过程中还必须设置会话变量。

阿卜杜拉·乔吉玛达希尔

尝试重用该代码，这将有助于管理您的代码和应用程序，请创建一个用于登录过程的函数，并在正常登录后使用该函数，并在注册后再使用用于注册的详细信息调用该函数。

function authenticate($user_id, $pwd)
{
 // do the logic for login, 
 //if success then set value in session and  redirect to the respective page
 //if failed then error page
}



  if (!empty($user_username) && !empty($user_password)) {
 // Make sure someone isn't already registered using this username
  $query = "SELECT * FROM <database> WHERE username = '$username'";
  $data = mysqli_query($dbc, $query);
  if (mysqli_num_rows($data) == 0) {
    // The username is unique, so insert the data into the database
    $query = "INSERT INTO <database> (username,last_name,password,join_date) VALUES ('$username','$email',SHA('$password1'), NOW())";
    $result=mysqli_query($dbc, $query) or die("cant create an account");
    // call the authenticate function for login
    authenticate($username, SHA('$password1'));
    }else{
        die("Somthing went wrong");
    }
      }

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