<?php

    function first(&$array)
    {
        if(!is_array($array)) return null;
        if(!count($array)) return null;
        reset($array);
        return key($array);
    }

    $var = first($_GET);
    if(isset($var)) echo 'It\'s working!';

class site
{

    private static $t = 'template/';
    private static $p = 'pages/';

    public static function load()
    {

        include site::$t.'header.php';

        if(isset($_SESSION['user']))
        {
            if(isset($_GET[$_GET]))
            {
                echo 'lololo';
                $page = $_GET;
                $page .= '.php';
            }
            else $page = 'index.php';
            include site::$p.$page;
        }
        else include site::$p.'login.php';

        include site::$t.'footer.php';
    }

    public static function login()
    {
        if(isset($_POST['login']))
        {
            if(empty($_POST['username']))
            {
                print 'Username field was empty, please try again.';
                return;
            }

            if(empty($_POST['password']))
            {
                print 'Password field was empty, please try again.';
                return;
            }

            echo '<center><img src="images/loader.gif" /> submitting information..</center>';

            $username = mysql_real_escape_string($_POST['username']);
            $password = mysql_real_escape_string($_POST['password']);
            $encrypt = sha1(strtoupper($username.':'.$password));
            $q = mysql_query("SELECT * FROM users WHERE username = '$username' AND password = '$encrypt'") or die(mysql_error());

            if(mysql_fetch_array($q) > 0)
            {
                $row = mysql_fetch_assoc($q);

                foreach($row as $k => $v)
                {
                    $_SESSION[$k] = $v;
                }
            }

            header('Location:./');
        }
    }

}
?>