aa;$2y$10$VPU65Et3ndqpCuxilZSLYO5Z9hA1rHy0BVCCBRANsqzGy.TKncKNG
alan;$2y$10$69osQF6KBRfYeHRdqkkzRenXpwMMR4jIK5n0xxMJRQTFsKsgR2ZN2
ala;$2y$10$/rcufuupuBVoG216aF7kfOlkvBxwHbI1kzsFg9BbQ2fbj/OyOQmeK

<form action="login.php" method="post">
Username: <input type="text" name="namn"><br> Password: <input
type="text" name="pass"><br>
<input type="submit" name="login" value="Log in">
</form>
<?php
session_start();
$userN = $_POST['namn'];
$passW = password_hash($_POST['pass'], PASSWORD_DEFAULT);
$userList = file ('users.txt');

if (isset($_POST['login'])) {
    if (empty($userN) && empty($_POST['pass'])) {
        echo "Both fields are empty.";
    } else if (empty($_POST['pass'])) {
        echo "Please enter your password";
    } else if (empty($userN)) {
        echo "Please enter your username.";
    } else {
        foreach($userList as $row) {
            $parts = explode(";",$row);
                if($userN==$parts[0] && password_verify($passW, $parts[1])) {
                    $_SESSION['username'] = $_POST['namn'];
                    header("Location:index.php");
                } else {
                    echo "Wrong username/password!";
                }
           }
      }
 }