password_verify doesn't work (password_hash) with Drew's manual

Question

I created a login page, but when the code want to verify the hashed password with the entered password, it showed me the error message.

<?php 
session_start();
$pdo = new PDO(xxxx);
if(isset($_GET['login'])) {
	$username = $_POST['username'];
	$password = $_POST['password'];
	
	$statement = $pdo->prepare('SELECT * FROM users WHERE username = :username');
	$result = $statement->execute(array('username' => $username));
	$user = $statement->fetch();
	//verify password
	if ($user !== false && password_verify($password, $user['passwort'])) {
		$_SESSION['userid'] = $user['id'];
		die('Login succesfull');
	} else {
		$errorMessage = "Login error";
	}
	
}

if(isset($errorMessage)) {
	echo $errorMessage;
}
?>

Now I edited the code with the help of Drew's manual, but it doesn't work either.

<?php 
session_start();
$pdo = new PDO(xxxxx);
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
if(isset($_GET['login'])) {
	$username = $_POST['username'];
	$passwort = $_POST['password'];
	
$query = $pdo->prepare("SELECT * FROM users WHERE username=:username");
        $query->bindParam(':username', $username);
        $query->execute();

        unset($_SESSION['username']);

        if(($row = $query->fetch()) && (password_verify($passwort,$row['passwort']))){
            $_SESSION['username'] = $row['username'];
            //header("Location: ../../myaccount/myaccount.php");
            echo "hurray, you authenticated.<br/>";
        }
        else {
            //header("Location:../../login/login.php ");
            echo "invalid login<br/>";
        }
}
?>

Answer 1

如果您在用户注册后对密码进行了哈希处理并保存在数据库中，那么您还应该撤消该哈希值，以便在登录时验证用户。在撤消哈希值后，将<ComboBox Name="listSelect" ItemsSource="{Binding DataInstance.ItemList}"> <ComboBox.ItemTemplate> <DataTemplate> <TextBlock Text="{Binding ItemNumber, Mode=OneWay}" /> </DataTemplate> </ComboBox.ItemTemplate> <ComboBox.ItemsPanel> <ItemsPanelTemplate> <StackPanel Orientation="Vertical" /> </ItemsPanelTemplate> </ComboBox.ItemsPanel> </ComboBox> 与数据库中的等价物进行比较。