<?php session_start();

    // Her skal du udfylde host, brugernavn, kodeord og databasenavn til MySQL.

    $mysqlHost = "*****";
    $mysqlUser = "*****";
    $mysqlPassword = "*****";
    $mysqlDb = "*****";

    // -----------------------------------------------------------------------------------------

    session_regenerate_id(TRUE);

    $_SESSION["controlId"] = md5(uniqid(rand(), true));

    $mysqli = new mysqli ($mysqlHost, $mysqlUser, $mysqlPassword, $mysqlDb) or die(mysql_error());

    if (mysqli_connect_errno()) {

        printf("Kunne ikke etablere forbindelse: %s\n", mysqli_connect_error());
        exit();

    }

    $mysqli->set_charset("utf8");

    if ($stmt = $mysqli->prepare("INSERT INTO table (sesCheck) values (?)")) {

        $stmt->bind_param('i', $session);

        $stmt->send_long_data(1, $session);

        $session = $_SESSION["controlId"];

        $stmt->execute();

        $stmt->close();

    } else {

        printf("Der opstod en fejl. Prøv igen senere: %s\n", $mysqli->error);

    }

    if ($stmt = $mysqli->prepare("SELECT username, sesCheck, siteName, url FROM table")) {
                                                    $stmt->execute();

        $stmt->bind_result($conUserName, $conSesCheck, $conSiteName, $conUrl);

        $stmt->fetch();

        $stmt->close();

    } else {

        printf("Der opstod en fejl. Prøv igen senere: %s\n", $mysqli->error);

    }

    $mysqli->close();

    function tjek_login() {

        if (isset($_SESSION["logged_in"]) && $_SESSION["controlId"] == $conSesCheck) {

            return true;

        } else {

            header("location:" . $conUrl . "/cms/login.php");
            return false;
            exit;

        }

    }

?>