function RegisterUser()
{
    if(!isset($_POST['submitted']))
    {
       return false;
    }

    $formvars = array();

    if(!$this->ValidateRegistrationSubmission())
    {
        return false;
    }

    $this->CollectRegistrationSubmission($formvars);

    if(!$this->SaveToDatabase($formvars))
    {
        return false;
    }

    /*if(!$this->SendUserConfirmationEmail($formvars))
    {
        return false;
    }*/

    $this->SendAdminIntimationEmail($formvars);

    $this->AutoLogin($formvars);// My call

    return true;
}

function Login()
{
    if(empty($_POST['email']))
    {
        $this->HandleError("Email is empty!");
        return false;
    }

    if(empty($_POST['password']))
    {
        $this->HandleError("Password is empty!");
        return false;
    }

    $email = trim($_POST['email']);
    $password = trim($_POST['password']);

    if(!isset($_SESSION)){ session_start(); }
    if(!$this->CheckLoginInDB($email,$password))
    {
        return false;
    }

    $_SESSION[$this->GetLoginSessionVar()] = $email;

    return true;
}

function AutoLogin(&$formvars)
{
    $email = trim($formvars['email']);
    $password = trim($formvars['password']);

    if(!isset($_SESSION)){ session_start(); }
    if(!$this->CheckLoginInDB($email,$password))
    {
        return false;
    }

    $_SESSION[$this->GetLoginSessionVar()] = $email;

    return true;
}

function CheckLogin()
{
     if(!isset($_SESSION)){ session_start(); }

     $sessionvar = $this->GetLoginSessionVar();

     if(empty($_SESSION[$sessionvar]))
     {
        return false;
     }
     return true;
}

function CheckLoginInDB($email,$password)
{
    if(!$this->DBLogin())
    {
        $this->HandleError("Database login failed!");
        return false;
    }
    $email = $this->SanitizeForSQL($email);
    $pwdmd5 = md5($password);
    $qry = "Select name, email, pagecode, welcome from $this->tablename where email='$email' and password='$pwdmd5' and confirmcode='y'";

    $result = mysql_query($qry,$this->connection);

    if(!$result || mysql_num_rows($result) <= 0)
    {
        $this->HandleError("Error logging in. The email or password does not match");
        return false;
    }

    $row = mysql_fetch_assoc($result);

    $_SESSION['name_of_user']  = $row['name'];
    $_SESSION['email_of_user'] = $row['email'];
    $_SESSION['pagecode_of_user'] = $row['pagecode'];
    $_SESSION['welcome_user'] = $row['welcome'];

    return true;
}

function GetLoginSessionVar()
{
    $retvar = md5($this->rand_key);
    $retvar = 'usr_'.substr($retvar,0,10);
    return $retvar;
}

<?php

if (!$_SESSION) {
    session_start();
}

$currentUser = array();

function getUserFromID($userID)
{
    //TODO implement function
    return $user;
}

function AutoLogin()
{
    global $currentUser;
    if(!empty($_SESSION['userID'])) {
        return false;
    }

    $user = getUserFromID($_SESSION['userID']);
    if (empty($user)) {
        return false;
    }
    $currentUser = $user;
    return true;
}