prepare('SELECT id, authentication_algorithm, authentication_salt, authentication_string FROM users WHERE name = :username;'); $result = $statement->execute(array('username' => $username)); if ($statement->rowCount() > 0) { //existing user name $dbentry = $statement->fetch(); //chechk for correct password if ($dbentry['authentication_string'] == hash($dbentry['authentication_algorithm'], $password . $dbentry['authentication_salt'])) { //password correct echo 1; } else { //password inorrect header("Location: https://lostcave.ddnss.de/login?error=credentials"); die(); } } else { //wrong user name header("Location: https://lostcave.ddnss.de/login?error=credentials&1=0"); die(); } ?>