Untitled

<!DOCTYPE html>
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<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
    </head>
    <body>
        <h1>Logovanje</h1><br>
        <form method="GET" action="index.php">
            Username <input type="text" name="ime"><br>
            Password <input type="password" name="sifra"><br>
            Zapamti lozinku <input type="checkbox" name="sacuvaj"><br>
            <input type="submit" name="subm" value="Log in">
        </form>
        <?php
            if(isset($_GET['subm']))
            {
                $fajl= 'nalozi.xml';
                $xml= simplexml_load_file($fajl);

                foreach ($xml->user as $osoba)
                {
                    if($osoba['aktivan']==1 && $osoba->username==$_GET['ime'] && $osoba->password==$_GET['sifra'])
                    {
                        setcookie('email', $_GET['ime'], time()+86400*3);
                        if(isset($_GET['sacuvaj']))
                            setcookie ('sifra', $_GET['sifra'], time()+86400*3);

                        header("Location:uspesna.php");
                    }
                }
            }
            else if(isset ($_COOKIE['email']))
            {
                $_GET['ime']=$_COOKIE['email'];
                if(isset($_COOKIE['sifra']))
                    $_GET['sifra']=$_COOKIE['sifra'];
            }
        ?>
    </body>
</html>