Mik*_*ike 2 html php mysql logout
我有一个表单,允许用户输入他们的数据.然后,它会根据数据库检查这些数据,以查看用户是否存在.如果是这样,它会将它们记录到某个页面中.
然后,我想允许他们注销(这样他们就无法访问该特定页面).为此,我创建了一个"logout.php"文档,在其中我尝试清除登录详细信息.
但是,完成此操作后,如果我尝试加载登录页面,它会将我带回登录页面.
这是我的代码(login.php - 创建表单并记录用户):
<?php //Start the Session
session_start();
require('connect.php');
if (isset($_POST['username']) and isset($_POST['password']))
{
//3.1.1 Assigning posted values to variables.
$username = $_POST['username'];
$password = $_POST['password'];
//3.1.2 Checking if the values exist in the database
$checkLogin = $connection->query("SELECT * FROM users
where (username='$username' && password='$password')");
$numRows = $checkLogin->fetchColumn();
//3.1.2 If the posted values are equal to the database values, then session will be created for the user.
if ($numRows >= 1){
$_SESSION['username'] = $username;
}else{
//3.1.3 If the login credentials doesn't match, he will be shown with an error message.
echo '<script>window.alert("Invalid Login Credentials")</script>';
}
}
//3.1.4 if the user is logged in Greets the user with message
if (isset($_SESSION['username'])){
$username = $_SESSION['username'];
echo "Hi " . $username . "
";
echo "This is the Members Area";
echo "<a href='logout.php'>Logout</a>";
echo $username;
}else{
//3.2 When the user visits the page first time, simple login form will be displayed.
?>
<!DOCTYPE html>
<head>
<title>CodingCyber - Simple Login Script</title>
<link rel="stylesheet" type="text/css" href="style.css" />
</head>
<body>
<!-- Form for logging in the users -->
<div class="register-form">
<?php
if(isset($msg) & !empty($msg)){
echo $msg;
}
?>
<h1>Login</h1>
<form action="login.php" method="POST">
<p><label>User Name : </label>
<input id="username" type="text" name="username" placeholder="username" /></p>
<p><label>Password : </label>
<input id="password" type="password" name="password" placeholder="password" /></p>
<a class="btn" href="register.php">Signup</a>
<input class="btn register" type="submit" name="submit" value="Login" />
</form>
</div>
<?php } ?>
</body>
</html>
"require('connect.php')"; 只是连接到我的MySQL数据库.这段代码似乎都运行正常,因为它确实会记录用户.我刚刚把它包括在内,以确保问题的完整性.
如您所见,登录后会显示文字"会员区",并带有注销超链接.
这是我的logout.php代码(我想删除对成员区域的访问权限,并将用户带回登录页面):
<?php
session_start();
$username = '';
$password = '';
$confirmPassword = '';
$email = '';
echo $username;
unset($_POST['username']);
unset($password);
?>
第二位代码就是说实话,我真的不确定我要删除访问权限的意图.
我看了几个其他问题,但似乎无法找到解决方案.
任何帮助都是极好的!如果有类似的帖子或者您需要更多信息,请告诉我.
谢谢!