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我正在创建登录表单，个人档案页面和注销，但是当我在页面上收到错误的用户名消息并单击x按钮时，它不会关闭。另外，当我只添加用户名并单击登录按钮时，页面将变为空白。有人能帮助我找出这里的歪斜吗？使用PHP和MySQL项目构建登录页面
<?php
/*
STEPS WE NEED TO TAKE...
1. Build Login HTML form
2. Check if form has been submitted
3. Validate form data
4. Add form data to variables
5. Connect to database
6. Query the database for username submitted
6.1 If no entries: show error message
7. Store basic user data from database in variables
8. Verify stored hashed password with the one submitted in the form
8.1 If invalid: show error message
9. Start a session & create session variables
10. Redirect to a "profile page"
10.1 Provide link to "logout" page
10.2 Add cookie clear to logout page
10.3 Provide link to log back in
11. Close the MySQL connection
*/
if(isset($_POST['login'])) {
// build a function to validate data
function validateFormData($formData) {
$formData = trim(stripslashes(htmlspecialchars($formData)));
return $formData;
}
// create variables
// wrap the data with our function
$formUser = validateFormData($_POST['username']);
$formPass = validateFormData($_POST['password']);
// connect to database
include('connection.php');
// create SQL query
$query = "SELECT username, email, password FROM users WHERE username='$formUser'";
//store the result
$result = mysqli_query($conn, $query);
// verify if result is returned
if(mysqli_num_rows($result) > 0) {
// store basic user data in variables
while($row - mysqli_fetch_assoc($result)) {
$user = $row['username'];
$email = $row['email'];
$hashedPass = $row['password'];
}
// verify hashed password with the typed password
if(password_verify($formPass, $hashedPass)) {
// correct login details!
// start the session
session_start();
// store data in SESSION variable
$_SESSION['loggedInUser'] = $user;
$_SESSION['loggedInEmail'] = $email;
header("Location: profile.php");
} else { // hashed password didn't verify
// error message
$loginError = "<div class='alert alert-danger'>Wrong username/password combination. Please try again.</div>";
}
} else { // there are no results in database
$loginError = "<div class='alert alert-danger'>No such user in database. Please try again. <a class='close' data-dismiss='alert'>×</a></div>";
}
// close the mysql connection
mysqli_close($conn);
}
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Login</title>
<!--Bootstrap CSS-->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<!--HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries-->
<!--WARNING: Respond.js doesn't work if you view the page via file://-->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body>
<div class="container">
<h1>Login</h1>
<p class="lead">Use this form to log into your account</p>
<?php echo $loginError; ?>
<form class="form-inline" action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" method="post">
<div class="form-group">
<label for="login-username" class="sr-only">Username</label>
<input type="text" class="form-control" id="login-username" placeholder="username" name="username">
</div>
<div class="form-group">
<label for="login-password" class="sr-only">Password</label>
<input type="password" class="form-control" id="login-password" placeholder="password" name="password">
</div>
<button type="submit" class="btn btn-default" name="login">Login!</button>
</form>
</div>
<!--Bootstrap JS-->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
</body>
</html>
问题是数据库中是否存在散列密码以及列的类型是否正确和足够长以容纳散列。 10次中有9次，这就是问题所在。发布数据库模式将在这里将猜测放在它之外。 –
Fred，我的数据库密码的varchar设置为255.到目前为止，还没有现有的散列密码。我正在尝试创建一个登录页面来在数据库中创建一个。 –
那你去那吧。没有密码，没有登录。用'password_hash（）'创建一个。 –